diff --git a/CHANGELOG.md b/CHANGELOG.md
index 518c858d15f..7985adf1386 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,14 @@
 (Add new changes here, and they will be copied to the
  change section for the next dev version)
 
+### Core library changes
+
+* `dart:core`
+  * Added `tryParse` static method to `int`, `double`, `num`, `BigInt`,
+    `Uri` and `DateTime`.
+  * Deprecated `onError` parameter on `int.parse`, `double.parse`
+    and `num.parse`.
+
 ### Tool Changes
 
 #### Analyzer
diff --git a/pkg/dev_compiler/tool/input_sdk/patch/core_patch.dart b/pkg/dev_compiler/tool/input_sdk/patch/core_patch.dart
index 02acb06d409..21da3ab53cf 100644
--- a/pkg/dev_compiler/tool/input_sdk/patch/core_patch.dart
+++ b/pkg/dev_compiler/tool/input_sdk/patch/core_patch.dart
@@ -135,13 +135,21 @@ class Expando<T> {
   static int _keyCount = 0;
 }
 
+Null _kNull(_) => null;
+
 @patch
 class int {
   @patch
-  static int parse(String source, {int radix, int onError(String source)}) {
+  static int parse(String source,
+      {int radix, @deprecated int onError(String source)}) {
     return Primitives.parseInt(source, radix, onError);
   }
 
+  @patch
+  static int tryParse(String source, {int radix}) {
+    return Primitives.parseInt(source, radix, _kNull);
+  }
+
   @patch
   factory int.fromEnvironment(String name, {int defaultValue}) {
     // ignore: const_constructor_throws_exception
@@ -153,9 +161,15 @@ class int {
 @patch
 class double {
   @patch
-  static double parse(String source, [double onError(String source)]) {
+  static double parse(String source,
+      [@deprecated double onError(String source)]) {
     return Primitives.parseDouble(source, onError);
   }
+
+  @patch
+  static double tryParse(String source) {
+    return Primitives.parseDouble(source, _kNull);
+  }
 }
 
 @patch
@@ -171,6 +185,10 @@ class BigInt implements Comparable<BigInt> {
   static BigInt parse(String source, {int radix}) =>
       _BigIntImpl.parse(source, radix: radix);
 
+  @patch
+  static BigInt tryParse(String source, {int radix}) =>
+      _BigIntImpl._tryParse(source, radix: radix);
+
   @patch
   factory BigInt.from(num value) = _BigIntImpl.from;
 }
diff --git a/runtime/lib/bigint_patch.dart b/runtime/lib/bigint_patch.dart
index e43df3018c6..5fc7a326ca5 100644
--- a/runtime/lib/bigint_patch.dart
+++ b/runtime/lib/bigint_patch.dart
@@ -53,6 +53,10 @@ class BigInt implements Comparable<BigInt> {
   static BigInt parse(String source, {int radix}) =>
       _BigIntImpl.parse(source, radix: radix);
 
+  @patch
+  static BigInt tryParse(String source, {int radix}) =>
+      _BigIntImpl._tryParse(source, radix: radix);
+
   @patch
   factory BigInt.from(num value) => new _BigIntImpl.from(value);
 }
diff --git a/runtime/lib/double_patch.dart b/runtime/lib/double_patch.dart
index 221bc939eef..a621e664d06 100644
--- a/runtime/lib/double_patch.dart
+++ b/runtime/lib/double_patch.dart
@@ -103,7 +103,8 @@ class double {
   }
 
   @patch
-  static double parse(String source, [double onError(String source)]) {
+  static double parse(String source,
+      [@deprecated double onError(String source)]) {
     var result = _parse(source);
     if (result == null) {
       if (onError == null) throw new FormatException("Invalid double", source);
@@ -111,4 +112,7 @@ class double {
     }
     return result;
   }
+
+  @patch
+  static double tryParse(String source) => _parse(source);
 }
diff --git a/runtime/lib/integers_patch.dart b/runtime/lib/integers_patch.dart
index c7116c790f9..d1c13bea18f 100644
--- a/runtime/lib/integers_patch.dart
+++ b/runtime/lib/integers_patch.dart
@@ -107,6 +107,22 @@ class int {
     return result;
   }
 
+  @patch
+  static int tryParse(String source, {int radix}) {
+    if (source == null) throw new ArgumentError("The source must not be null");
+    if (source.isEmpty) return null;
+    if (radix == null || radix == 10) {
+      // Try parsing immediately, without trimming whitespace.
+      int result = _tryParseSmi(source, 0, source.length - 1);
+      if (result != null) return result;
+    } else if (radix < 2 || radix > 36) {
+      throw new RangeError("Radix $radix not in range 2..36");
+    }
+    return _parse(source, radix, _kNull);
+  }
+
+  static Null _kNull(_) => null;
+
   static int _throwFormatException(onError, source, index, radix) {
     if (onError != null) return onError(source);
     if (radix == null) {
diff --git a/sdk/lib/_internal/js_runtime/lib/core_patch.dart b/sdk/lib/_internal/js_runtime/lib/core_patch.dart
index d0f53c309be..1e306bc261a 100644
--- a/sdk/lib/_internal/js_runtime/lib/core_patch.dart
+++ b/sdk/lib/_internal/js_runtime/lib/core_patch.dart
@@ -166,20 +166,34 @@ class Expando<T> {
   }
 }
 
+Null _kNull(_) => null;
+
 @patch
 class int {
   @patch
-  static int parse(String source, {int radix, int onError(String source)}) {
+  static int parse(String source,
+      {int radix, @deprecated int onError(String source)}) {
     return Primitives.parseInt(source, radix, onError);
   }
+
+  @patch
+  static int tryParse(String source, {int radix}) {
+    return Primitives.parseInt(source, radix, _kNull);
+  }
 }
 
 @patch
 class double {
   @patch
-  static double parse(String source, [double onError(String source)]) {
+  static double parse(String source,
+      [@deprecated double onError(String source)]) {
     return Primitives.parseDouble(source, onError);
   }
+
+  @patch
+  static double tryParse(String source) {
+    return Primitives.parseDouble(source, _kNull);
+  }
 }
 
 @patch
@@ -195,6 +209,10 @@ class BigInt implements Comparable<BigInt> {
   static BigInt parse(String source, {int radix}) =>
       _BigIntImpl.parse(source, radix: radix);
 
+  @patch
+  static BigInt tryParse(String source, {int radix}) =>
+      _BigIntImpl._tryParse(source, radix: radix);
+
   @patch
   factory BigInt.from(num value) = _BigIntImpl.from;
 }
diff --git a/sdk/lib/core/bigint.dart b/sdk/lib/core/bigint.dart
index 00bff7622a8..b495a9edc65 100644
--- a/sdk/lib/core/bigint.dart
+++ b/sdk/lib/core/bigint.dart
@@ -37,6 +37,15 @@ abstract class BigInt implements Comparable<BigInt> {
    */
   external static BigInt parse(String source, {int radix});
 
+  /**
+   * Parses [source] as a, possibly signed, integer literal and returns its
+   * value.
+   *
+   * As [parse] except that this method returns `null` if the input is not
+   * valid
+   */
+  external static BigInt tryParse(String source, {int radix});
+
   /// Allocates a big integer from the provided [value] number.
   external factory BigInt.from(num value);
 
diff --git a/sdk/lib/core/date_time.dart b/sdk/lib/core/date_time.dart
index ccc850bc114..793b7e3bf50 100644
--- a/sdk/lib/core/date_time.dart
+++ b/sdk/lib/core/date_time.dart
@@ -317,28 +317,7 @@ class DateTime implements Comparable<DateTime> {
   // TODO(lrn): restrict incorrect values like  2003-02-29T50:70:80.
   // Or not, that may be a breaking change.
   static DateTime parse(String formattedString) {
-    /*
-     * date ::= yeardate time_opt timezone_opt
-     * yeardate ::= year colon_opt month colon_opt day
-     * year ::= sign_opt digit{4,6}
-     * colon_opt :: <empty> | ':'
-     * sign ::= '+' | '-'
-     * sign_opt ::=  <empty> | sign
-     * month ::= digit{2}
-     * day ::= digit{2}
-     * time_opt ::= <empty> | (' ' | 'T') hour minutes_opt
-     * minutes_opt ::= <empty> | colon_opt digit{2} seconds_opt
-     * seconds_opt ::= <empty> | colon_opt digit{2} millis_opt
-     * micros_opt ::= <empty> | '.' digit{1,6}
-     * timezone_opt ::= <empty> | space_opt timezone
-     * space_opt :: ' ' | <empty>
-     * timezone ::= 'z' | 'Z' | sign digit{2} timezonemins_opt
-     * timezonemins_opt ::= <empty> | colon_opt digit{2}
-     */
-    final RegExp re = new RegExp(r'^([+-]?\d{4,6})-?(\d\d)-?(\d\d)' // Day part.
-        r'(?:[ T](\d\d)(?::?(\d\d)(?::?(\d\d)(?:\.(\d{1,6}))?)?)?' // Time part.
-        r'( ?[zZ]| ?([-+])(\d\d)(?::?(\d\d))?)?)?$'); // Timezone part.
-
+    var re = _parseFormat;
     Match match = re.firstMatch(formattedString);
     if (match != null) {
       int parseIntOrZero(String matched) {
@@ -400,6 +379,15 @@ class DateTime implements Comparable<DateTime> {
     }
   }
 
+  static DateTime tryParse(String formattedString) {
+    // TODO: Optimize to avoid throwing.
+    try {
+      return parse(formattedString);
+    } on FormatException {
+      return null;
+    }
+  }
+
   static const int _maxMillisecondsSinceEpoch = 8640000000000000;
 
   /**
@@ -904,4 +892,27 @@ class DateTime implements Comparable<DateTime> {
    * ```
    */
   external int get weekday;
+
+  /*
+   * date ::= yeardate time_opt timezone_opt
+   * yeardate ::= year colon_opt month colon_opt day
+   * year ::= sign_opt digit{4,6}
+   * colon_opt :: <empty> | ':'
+   * sign ::= '+' | '-'
+   * sign_opt ::=  <empty> | sign
+   * month ::= digit{2}
+   * day ::= digit{2}
+   * time_opt ::= <empty> | (' ' | 'T') hour minutes_opt
+   * minutes_opt ::= <empty> | colon_opt digit{2} seconds_opt
+   * seconds_opt ::= <empty> | colon_opt digit{2} millis_opt
+   * micros_opt ::= <empty> | '.' digit{1,6}
+   * timezone_opt ::= <empty> | space_opt timezone
+   * space_opt :: ' ' | <empty>
+   * timezone ::= 'z' | 'Z' | sign digit{2} timezonemins_opt
+   * timezonemins_opt ::= <empty> | colon_opt digit{2}
+   */
+  static final RegExp _parseFormat = new RegExp(
+      r'^([+-]?\d{4,6})-?(\d\d)-?(\d\d)' // Day part.
+      r'(?:[ T](\d\d)(?::?(\d\d)(?::?(\d\d)(?:\.(\d{1,6}))?)?)?' // Time part.
+      r'( ?[zZ]| ?([-+])(\d\d)(?::?(\d\d))?)?)?$'); // Timezone part.
 }
diff --git a/sdk/lib/core/double.dart b/sdk/lib/core/double.dart
index e10a99bcc3d..89dd83b383e 100644
--- a/sdk/lib/core/double.dart
+++ b/sdk/lib/core/double.dart
@@ -210,6 +210,19 @@ abstract class double extends num {
    *     "1234E+7"
    *     "+.12e-9"
    *     "-NaN"
+   *
+   * The [onError] parameter is deprecated and will be removed.
+   * Instead of `double.parse(string, (string) { ... })`,
+   * you should use `double.tryParse(string) ?? (...)`.
    */
-  external static double parse(String source, [double onError(String source)]);
+  external static double parse(String source,
+      [@deprecated double onError(String source)]);
+
+  /**
+   * Parse [source] as an double literal and return its value.
+   *
+   * Like [parse] except that this function returns `null` for invalid inputs
+   * instead of throwing.
+   */
+  external static double tryParse(String source);
 }
diff --git a/sdk/lib/core/int.dart b/sdk/lib/core/int.dart
index c28679e0136..02bca2347f6 100644
--- a/sdk/lib/core/int.dart
+++ b/sdk/lib/core/int.dart
@@ -319,7 +319,19 @@ abstract class int extends num {
    *
    * The [onError] function is only invoked if [source] is a [String]. It is
    * not invoked if the [source] is, for example, `null`.
+   *
+   * The [onError] parameter is deprecated and will be removed.
+   * Instead of `int.parse(string, onError: (string) { ... })`,
+   * you should use `int.tryParse(string) ?? (...)`.
    */
   external static int parse(String source,
-      {int radix, int onError(String source)});
+      {int radix, @deprecated int onError(String source)});
+
+  /**
+   * Parse [source] as a, possibly signed, integer literal and return its value.
+   *
+   * Like [parse] except that this function returns `null` for invalid inputs
+   * instead of throwing.
+   */
+  external static int tryParse(String source, {int radix});
 }
diff --git a/sdk/lib/core/num.dart b/sdk/lib/core/num.dart
index b282bf25e37..86247d375ed 100644
--- a/sdk/lib/core/num.dart
+++ b/sdk/lib/core/num.dart
@@ -462,18 +462,30 @@ abstract class num implements Comparable<num> {
    * For any number `n`, this function satisfies
    * `identical(n, num.parse(n.toString()))` (except when `n` is a NaN `double`
    * with a payload).
+   *
+   * The [onError] parameter is deprecated and will be removed.
+   * Instead of `num.parse(string, (string) { ... })`,
+   * you should use `num.tryParse(string) ?? (...)`.
    */
-  static num parse(String input, [num onError(String input)]) {
-    String source = input.trim();
-    // TODO(lrn): Optimize to detect format and result type in one check.
-    num result = int.parse(source, onError: _returnIntNull);
-    if (result != null) return result;
-    result = double.parse(source, _returnDoubleNull);
+  static num parse(String input, [@deprecated num onError(String input)]) {
+    num result = tryParse(input);
     if (result != null) return result;
     if (onError == null) throw new FormatException(input);
     return onError(input);
   }
 
+  /**
+   * Parses a string containing a number literal into a number.
+   *
+   * Like [parse] except that this function returns `null` for invalid inputs
+   * instead of throwing.
+   */
+  static num tryParse(String input) {
+    String source = input.trim();
+    // TODO(lrn): Optimize to detect format and result type in one check.
+    return int.tryParse(source) ?? double.tryParse(source);
+  }
+
   /** Helper functions for [parse]. */
   static int _returnIntNull(String _) => null;
   static double _returnDoubleNull(String _) => null;
diff --git a/sdk/lib/core/string.dart b/sdk/lib/core/string.dart
index f81fdf684ec..5c1991727a8 100644
--- a/sdk/lib/core/string.dart
+++ b/sdk/lib/core/string.dart
@@ -309,20 +309,20 @@ abstract class String implements Comparable<String>, Pattern {
    *
    * If the string contains leading or trailing whitespace, a new string with no
    * leading and no trailing whitespace is returned:
-   *
-   *     '\tDart is fun\n'.trim(); // 'Dart is fun'
-   *
+   * ```dart
+   * '\tDart is fun\n'.trim(); // 'Dart is fun'
+   * ```
    * Otherwise, the original string itself is returned:
-   *
-   *     var str1 = 'Dart';
-   *     var str2 = str1.trim();
-   *     identical(str1, str2);    // true
-   *
+   * ```dart
+   * var str1 = 'Dart';
+   * var str2 = str1.trim();
+   * identical(str1, str2);    // true
+   * ```
    * Whitespace is defined by the Unicode White_Space property (as defined in
    * version 6.2 or later) and the BOM character, 0xFEFF.
    *
-   * Here is the list of trimmed characters (following version 6.3):
-   *
+   * Here is the list of trimmed characters according to Unicode version 6.3:
+   * ```
    *     0009..000D    ; White_Space # Cc   <control-0009>..<control-000D>
    *     0020          ; White_Space # Zs   SPACE
    *     0085          ; White_Space # Cc   <control-0085>
@@ -336,6 +336,10 @@ abstract class String implements Comparable<String>, Pattern {
    *     3000          ; White_Space # Zs   IDEOGRAPHIC SPACE
    *
    *     FEFF          ; BOM                ZERO WIDTH NO_BREAK SPACE
+   * ```
+   * Some later versions of Unicode do not include U+0085 as a whitespace
+   * character. Whether it is trimmed depends on the Unicode version
+   * used by the system.
    */
   String trim();
 
diff --git a/sdk/lib/core/uri.dart b/sdk/lib/core/uri.dart
index dce9ac3e0f9..895c0c05c63 100644
--- a/sdk/lib/core/uri.dart
+++ b/sdk/lib/core/uri.dart
@@ -1013,6 +1013,23 @@ abstract class Uri {
         pathStart, queryStart, fragmentStart, scheme);
   }
 
+  /**
+   * Creates a new `Uri` object by parsing a URI string.
+   *
+   * If [start] and [end] are provided, only the substring from `start`
+   * to `end` is parsed as a URI.
+   *
+   * Returns `null` if the string is not valid as a URI or URI reference.
+   */
+  static Uri tryParse(String uri, [int start = 0, int end]) {
+    // TODO: Optimize to avoid throwing-and-recatching.
+    try {
+      return parse(uri, start, end);
+    } on FormatException {
+      return null;
+    }
+  }
+
   /**
    * Encode the string [component] using percent-encoding to make it
    * safe for literal use as a URI component.
diff --git a/tests/corelib_2/corelib_2.status b/tests/corelib_2/corelib_2.status
index 9ba681db0dc..4b626c0b178 100644
--- a/tests/corelib_2/corelib_2.status
+++ b/tests/corelib_2/corelib_2.status
@@ -586,13 +586,6 @@ from_environment_const_type_undefined_test/14: MissingCompileTimeError
 from_environment_const_type_undefined_test/16: MissingCompileTimeError
 iterable_to_set_test: RuntimeError # is-checks do not implement strong mode type system
 
-[ $compiler == dartdevc || $compiler == dart2analyzer && $strong ]
-double_parse_test/01: Skip # Temporarily disable the following tests until we figure out why they started failing.
-double_parse_test/02: Skip # Temporarily disable the following tests until we figure out why they started failing.
-double_parse_test/03: Skip # Temporarily disable the following tests until we figure out why they started failing.
-double_parse_test/04: Skip # Temporarily disable the following tests until we figure out why they started failing.
-double_parse_test/none: Skip # Temporarily disable the following tests until we figure out why they started failing.
-
 [ $compiler == dartkp || $compiler == precompiler ]
 apply3_test: SkipByDesign
 dynamic_nosuchmethod_test: SkipByDesign
diff --git a/tests/corelib_2/double_parse_test.dart b/tests/corelib_2/double_parse_test.dart
index 25a72ecbce8..7dc70e74d63 100644
--- a/tests/corelib_2/double_parse_test.dart
+++ b/tests/corelib_2/double_parse_test.dart
@@ -15,9 +15,7 @@ const whiteSpace = const [
   "\x0c",
   "\x0d",
   // JS implementations disagree on U+0085 being whitespace.
-  // U+0085 does not work well with testParseWhiteSpace, so place
-  // in its own multitest.
-  "\x85", //# 01: ok
+  // U+0085 does not work well with testParseWhiteSpace, so omit it.
   "\xa0",
   "\u1680",
   "\u2000",
@@ -232,27 +230,27 @@ void main() {
       "4555072551893136908362547791869486679949683240497058210285131854"
       "51396213837722826145437693412532098591327667236328125",
       0.0);
-  testParse( //# 03: ok
-      "0.00000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000024703282292062327208828439643411068627545332140664243314532" //# 03: ok
-      "8041234170109088178685677591650492652607243027730579814636067699" //# 03: ok
-      "1112238669661707327453443265068702897439863329200619332642599205" //# 03: ok
-      "1806252781222000513169502627641523911022607448403553068808609405" //# 03: ok
-      "1727798181294290864842608522062097649849550765341204993205100587" //# 03: ok
-      "2127469658709242016690593998242808606978027857019419997429604579" //# 03: ok
-      "7572623273334010723772922131119806567715298322567005234345331218" //# 03: ok
-      "5169920860031716486480793611343761679481328431956040281530986197" //# 03: ok
-      "8304604971452253283193290744072288902141724247846767401941767720" //# 03: ok
-      "8561650585989659548591956327689896895290365125294085321852619688" //# 03: ok
-      "9863888974446146846024033780172178553364579041996676675092137151" //# 03: ok
-      "9705456298034409473812692774776868254618683783877327369245051207" //# 03: ok
-      "5931578479504396230612962142122846982018227555473696607567828620" //# 03: ok
-      "5497859173707553281928994692862033843994140625", //# 03: ok
-      5e-324); //# 03: ok
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000024703282292062327208828439643411068627545332140664243314532"
+      "8041234170109088178685677591650492652607243027730579814636067699"
+      "1112238669661707327453443265068702897439863329200619332642599205"
+      "1806252781222000513169502627641523911022607448403553068808609405"
+      "1727798181294290864842608522062097649849550765341204993205100587"
+      "2127469658709242016690593998242808606978027857019419997429604579"
+      "7572623273334010723772922131119806567715298322567005234345331218"
+      "5169920860031716486480793611343761679481328431956040281530986197"
+      "8304604971452253283193290744072288902141724247846767401941767720"
+      "8561650585989659548591956327689896895290365125294085321852619688"
+      "9863888974446146846024033780172178553364579041996676675092137151"
+      "9705456298034409473812692774776868254618683783877327369245051207"
+      "5931578479504396230612962142122846982018227555473696607567828620"
+      "5497859173707553281928994692862033843994140625",
+      5e-324);
   testParse(
       "0.00000000000000000000000000000000000000000000000000000000000000"
       "0000000000000000000000000000000000000000000000000000000000000000"
@@ -375,46 +373,46 @@ void main() {
       "8136843040991207538774075715754306035963544889052606784864342758"
       "900428165258489343614201061427593231201171875",
       5e-324);
-  testParse( //# 02: ok
-      "0.00000000000000000000000000000000000000000000000000000000000000" //# 02: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 02: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 02: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 02: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 02: ok
-      "0000074109846876186981626485318930233205854758970392148714663837" //# 02: ok
-      "8523751013260905313127797949754542453988569694847043168576596389" //# 02: ok
-      "9850655339096945981621940161728171894510697854671067917687257517" //# 02: ok
-      "7347315553307795408549809608457500958111373034747658096871009590" //# 02: ok
-      "9754422710047573078097111189357848386756539987835030152280559340" //# 02: ok
-      "4659373979179073872386829939581848166016912201945649993128979841" //# 02: ok
-      "1362062484498678713572180352209017023903285791732520220528974020" //# 02: ok
-      "8029068540216066123755499834026713000358124864790413857434018755" //# 02: ok
-      "2090159017259254714629617513415977493871857473787096164563890871" //# 02: ok
-      "8119841271673056017045493004705269590165763776884908267986972573" //# 02: ok
-      "3665217655679410725087643375608460039849049721491174630855395563" //# 02: ok
-      "54188641513168478436313080237596295773983001708984375", //# 02: ok
-      1e-323); //# 02: ok
-  testParse( //# 03: ok
-      "0.00000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000074109846876186981626485318930233205873343654412044724850344" //# 03: ok
-      "8923718677971811461747287833219166123210675953743507352131000861" //# 03: ok
-      "5508029119022396648780866584046796426383292609958261304514284249" //# 03: ok
-      "6061610746879932829188941791435548141415672575056325503240888674" //# 03: ok
-      "0040403932604439422384254107243478095284614859960753370503720954" //# 03: ok
-      "5808063977144841990843464643012899935961693114687389992568869106" //# 03: ok
-      "5599267374834247685403237712975952143398358575711517208866987110" //# 03: ok
-      "6349531233468788347546753834029761025748698485508885182206645314" //# 03: ok
-      "0639262948657591471263120659283236968907400986955900192071499065" //# 03: ok
-      "6496581595870337769532410323614883653969318176216473399700896902" //# 03: ok
-      "4282850500785430600410615352213843786678841324490411560469406158" //# 03: ok
-      "4550533979841101562169154890806946368370134291387467238490102415" //# 03: ok
-      "1863156959008792461225924284245693964036455110947393215135657241" //# 03: ok
-      "099571834741510656385798938572406768798828125", //# 03: ok
-      1e-323); //# 03: ok
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000074109846876186981626485318930233205854758970392148714663837"
+      "8523751013260905313127797949754542453988569694847043168576596389"
+      "9850655339096945981621940161728171894510697854671067917687257517"
+      "7347315553307795408549809608457500958111373034747658096871009590"
+      "9754422710047573078097111189357848386756539987835030152280559340"
+      "4659373979179073872386829939581848166016912201945649993128979841"
+      "1362062484498678713572180352209017023903285791732520220528974020"
+      "8029068540216066123755499834026713000358124864790413857434018755"
+      "2090159017259254714629617513415977493871857473787096164563890871"
+      "8119841271673056017045493004705269590165763776884908267986972573"
+      "3665217655679410725087643375608460039849049721491174630855395563"
+      "54188641513168478436313080237596295773983001708984375",
+      1e-323);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000074109846876186981626485318930233205873343654412044724850344"
+      "8923718677971811461747287833219166123210675953743507352131000861"
+      "5508029119022396648780866584046796426383292609958261304514284249"
+      "6061610746879932829188941791435548141415672575056325503240888674"
+      "0040403932604439422384254107243478095284614859960753370503720954"
+      "5808063977144841990843464643012899935961693114687389992568869106"
+      "5599267374834247685403237712975952143398358575711517208866987110"
+      "6349531233468788347546753834029761025748698485508885182206645314"
+      "0639262948657591471263120659283236968907400986955900192071499065"
+      "6496581595870337769532410323614883653969318176216473399700896902"
+      "4282850500785430600410615352213843786678841324490411560469406158"
+      "4550533979841101562169154890806946368370134291387467238490102415"
+      "1863156959008792461225924284245693964036455110947393215135657241"
+      "099571834741510656385798938572406768798828125",
+      1e-323);
   testParse(
       "0.00000000000000000000000000000000000000000000000000000000000000"
       "0000000000000000000000000000000000000000000000000000000000000000"
@@ -495,27 +493,27 @@ void main() {
       "0239620254961370692713747131027132020441991845959370908649389667"
       "01396213837722826145437693412532098591327667236328125",
       1.1125369292536007e-308);
-  testParse( //# 03: ok
-      "0.00000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000011125369292" //# 03: ok
-      "5360093857793927928947412039400442434185228365340521456608629527" //# 03: ok
-      "0200315929606120759250932815416474352736201659755028987189999989" //# 03: ok
-      "3220987486513026766686796443888026815774211444057134206415720396" //# 03: ok
-      "3510525564718487986029401249963455450110781777556316353975973978" //# 03: ok
-      "4825173851725161436876623857879887229903814003929524302244972629" //# 03: ok
-      "6795040225381805100879491255387164751912585073962051947893527710" //# 03: ok
-      "5170790163081944841764003984818943810636714040207972316616704045" //# 03: ok
-      "0220895038833513659790739432367709097880422198053807344762226099" //# 03: ok
-      "3129277744388529754345873069706690065083079768940685222309466301" //# 03: ok
-      "4235389404255004774284573740536646273496781023858510820692328908" //# 03: ok
-      "0857253100067390568036719107632515767271783448958607838263400261" //# 03: ok
-      "9271291212296536333081616208300526650104600844121842238490102415" //# 03: ok
-      "1863156959008792461225924284245693964036455110947393215135657241" //# 03: ok
-      "099571834741510656385798938572406768798828125", //# 03: ok
-      1.112536929253601e-308); //# 03: ok
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000011125369292"
+      "5360093857793927928947412039400442434185228365340521456608629527"
+      "0200315929606120759250932815416474352736201659755028987189999989"
+      "3220987486513026766686796443888026815774211444057134206415720396"
+      "3510525564718487986029401249963455450110781777556316353975973978"
+      "4825173851725161436876623857879887229903814003929524302244972629"
+      "6795040225381805100879491255387164751912585073962051947893527710"
+      "5170790163081944841764003984818943810636714040207972316616704045"
+      "0220895038833513659790739432367709097880422198053807344762226099"
+      "3129277744388529754345873069706690065083079768940685222309466301"
+      "4235389404255004774284573740536646273496781023858510820692328908"
+      "0857253100067390568036719107632515767271783448958607838263400261"
+      "9271291212296536333081616208300526650104600844121842238490102415"
+      "1863156959008792461225924284245693964036455110947393215135657241"
+      "099571834741510656385798938572406768798828125",
+      1.112536929253601e-308);
   testParse(
       "0.00000000000000000000000000000000000000000000000000000000000000"
       "0000000000000000000000000000000000000000000000000000000000000000"
@@ -577,46 +575,46 @@ void main() {
       "8136843040991207538774075715754306035963544889052606784864342758"
       "900428165258489343614201061427593231201171875",
       1.112536929253601e-308);
-  testParse( //# 02: ok
-      "0.00000000000000000000000000000000000000000000000000000000000000" //# 02: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 02: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 02: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 02: ok
-      "0000000000000000000000000000000000000000000000000000011125369292" //# 02: ok
-      "5360143264358512053601829696279729256322446286636762993074885578" //# 02: ok
-      "5482848940402484819383308231788212319506475197423260249353326444" //# 02: ok
-      "4130717265985540087275830129388183546908748591883986098046865342" //# 02: ok
-      "9694440740018214171090142139290408905547397593746087678853434622" //# 02: ok
-      "7708807769200010477987555066232823112546765790360487852208850575" //# 02: ok
-      "8752599546868752897347409845010678425979078962517411943872958339" //# 02: ok
-      "1841626929078828345647733525524686707077165117383988808631340302" //# 02: ok
-      "3919811372391502185169818655049136406061931820528945258278945377" //# 02: ok
-      "2640279824496362807465448266116748919295441238296611971177785355" //# 02: ok
-      "4605209927839760366494651758097211936470402475783551200969719627" //# 02: ok
-      "9349765358747644509438842714766105380341358326953487329219653376" //# 02: ok
-      "04188641513168478436313080237596295773983001708984375", //# 02: ok
-      1.1125369292536017e-308); //# 02: ok
-  testParse( //# 03: ok
-      "0.00000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000011125369292" //# 03: ok
-      "5360143264358512053601829696279729256322464871320782889085072085" //# 03: ok
-      "5882816605113390968002798115252835988728581456319724432907730915" //# 03: ok
-      "9788091045910990754434756551706808078781343347171179484873892074" //# 03: ok
-      "8408735933590351591729274322268456088851697134054755085223313705" //# 03: ok
-      "7994788991756876822274697984118452821074840662486211070432012189" //# 03: ok
-      "9901289544834521015804044548441730195923859875259151943312847604" //# 03: ok
-      "6078831819414397317478790886291621826572237901362985796969353392" //# 03: ok
-      "2240274065644224408961072655052184431452505441247416583051571936" //# 03: ok
-      "1189383755894699564098951411984008394330984751465415998685393549" //# 03: ok
-      "2981950252037042118981569077006826000273956875115116332683643956" //# 03: ok
-      "9967398203853664384761814691371489127171149929952724258833663970" //# 03: ok
-      "9550533979841101562169154890806946368370134291387467238490102415" //# 03: ok
-      "1863156959008792461225924284245693964036455110947393215135657241" //# 03: ok
-      "099571834741510656385798938572406768798828125", //# 03: ok
-      1.1125369292536017e-308); //# 03: ok
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000011125369292"
+      "5360143264358512053601829696279729256322446286636762993074885578"
+      "5482848940402484819383308231788212319506475197423260249353326444"
+      "4130717265985540087275830129388183546908748591883986098046865342"
+      "9694440740018214171090142139290408905547397593746087678853434622"
+      "7708807769200010477987555066232823112546765790360487852208850575"
+      "8752599546868752897347409845010678425979078962517411943872958339"
+      "1841626929078828345647733525524686707077165117383988808631340302"
+      "3919811372391502185169818655049136406061931820528945258278945377"
+      "2640279824496362807465448266116748919295441238296611971177785355"
+      "4605209927839760366494651758097211936470402475783551200969719627"
+      "9349765358747644509438842714766105380341358326953487329219653376"
+      "04188641513168478436313080237596295773983001708984375",
+      1.1125369292536017e-308);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000011125369292"
+      "5360143264358512053601829696279729256322464871320782889085072085"
+      "5882816605113390968002798115252835988728581456319724432907730915"
+      "9788091045910990754434756551706808078781343347171179484873892074"
+      "8408735933590351591729274322268456088851697134054755085223313705"
+      "7994788991756876822274697984118452821074840662486211070432012189"
+      "9901289544834521015804044548441730195923859875259151943312847604"
+      "6078831819414397317478790886291621826572237901362985796969353392"
+      "2240274065644224408961072655052184431452505441247416583051571936"
+      "1189383755894699564098951411984008394330984751465415998685393549"
+      "2981950252037042118981569077006826000273956875115116332683643956"
+      "9967398203853664384761814691371489127171149929952724258833663970"
+      "9550533979841101562169154890806946368370134291387467238490102415"
+      "1863156959008792461225924284245693964036455110947393215135657241"
+      "099571834741510656385798938572406768798828125",
+      1.1125369292536017e-308);
   testParse(
       "0.00000000000000000000000000000000000000000000000000000000000000"
       "0000000000000000000000000000000000000000000000000000000000000000"
@@ -696,27 +694,27 @@ void main() {
       "5924167958029604477064946470184777360934300451421683607013647479"
       "51396213837722826145437693412532098591327667236328125",
       2.2250738585072014e-308);
-  testParse( //# 03: ok
-      "0.00000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000022250738585" //# 03: ok
-      "0720163012305563795567615250361241457301819893006892300968851267" //# 03: ok
-      "7159413856747700265506443097450144218254107162331246067966730043" //# 03: ok
-      "7501049413401620872340686411548038468172262181270052386775328221" //# 03: ok
-      "5857650751428906748569733780796363397546806336554745935958399010" //# 03: ok
-      "2779558910877598836767067734754861955694039806454982002173263865" //# 03: ok
-      "0888265793071484125840071160815995011874751834533813898637506208" //# 03: ok
-      "5650354607662094473839557158134613493810593365859440904719070326" //# 03: ok
-      "6111637871008949721205058253390132503584229153792338745607152721" //# 03: ok
-      "3679398551625637847181703822407461490506663533450201028923360785" //# 03: ok
-      "0720758060421709123733732493928588619801419722757153753675075962" //# 03: ok
-      "6541800803135624352387918446790161107764092054420920536627658074" //# 03: ok
-      "4271291212296536333081616208300526650104600844121842238490102415" //# 03: ok
-      "1863156959008792461225924284245693964036455110947393215135657241" //# 03: ok
-      "099571834741510656385798938572406768798828125", //# 03: ok
-      2.225073858507202e-308); //# 03: ok
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000022250738585"
+      "0720163012305563795567615250361241457301819893006892300968851267"
+      "7159413856747700265506443097450144218254107162331246067966730043"
+      "7501049413401620872340686411548038468172262181270052386775328221"
+      "5857650751428906748569733780796363397546806336554745935958399010"
+      "2779558910877598836767067734754861955694039806454982002173263865"
+      "0888265793071484125840071160815995011874751834533813898637506208"
+      "5650354607662094473839557158134613493810593365859440904719070326"
+      "6111637871008949721205058253390132503584229153792338745607152721"
+      "3679398551625637847181703822407461490506663533450201028923360785"
+      "0720758060421709123733732493928588619801419722757153753675075962"
+      "6541800803135624352387918446790161107764092054420920536627658074"
+      "4271291212296536333081616208300526650104600844121842238490102415"
+      "1863156959008792461225924284245693964036455110947393215135657241"
+      "099571834741510656385798938572406768798828125",
+      2.225073858507202e-308);
   testParse(
       "0.00000000000000000000000000000000000000000000000000000000000000"
       "0000000000000000000000000000000000000000000000000000000000000000"
@@ -778,46 +776,46 @@ void main() {
       "8136843040991207538774075715754306035963544889052606784864342758"
       "900428165258489343614201061427593231201171875",
       2.225073858507202e-308);
-  testParse( //# 03: ok
-      "0.00000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000022250738585" //# 03: ok
-      "0720212418870147920222032907240528279439037814303133837435107319" //# 03: ok
-      "2441946867544064325638818513821882185024380699999477330130056498" //# 03: ok
-      "8410779192874134192929720097048195199306799329096904278406473168" //# 03: ok
-      "2041565926728632933630474670123316852983422152744517260835859654" //# 03: ok
-      "5663192828352447877877998943107797838336991592885945552137141811" //# 03: ok
-      "2845825114558431922307989750439508685941245723089173894616936837" //# 03: ok
-      "2321191373658977977723286698840356390251044443035457396733706583" //# 03: ok
-      "9810554204566938246584137476071559811765738776267476659123871999" //# 03: ok
-      "3190400631733470900301279018817520344719025002806127777791679839" //# 03: ok
-      "1090578584006464715943810511489154282775041174682194133952466682" //# 03: ok
-      "5034313061815878293790042053923750720833666932415800027583911188" //# 03: ok
-      "54188641513168478436313080237596295773983001708984375", //# 03: ok
-      2.2250738585072024e-308); //# 03: ok
-  testParse( //# 03: ok
-      "0.00000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000022250738585" //# 03: ok
-      "0720212418870147920222032907240528279439056398987153733445293826" //# 03: ok
-      "2841914532254970474258308397286505854246486958895941513684460970" //# 03: ok
-      "4068152972799584860088646519366819731179394084384097665233499900" //# 03: ok
-      "0755861120300770354269606853101364036287721693053184667205738737" //# 03: ok
-      "5949174050909314222165141860993427546865066465011668770360303425" //# 03: ok
-      "3994515112524200040764624453870560455886026635830913894056826102" //# 03: ok
-      "6558396263994546949554344059607291509746117227014454385071719673" //# 03: ok
-      "8131016897819660470375391476074607837156312396985947983896498558" //# 03: ok
-      "1739504563131807656934782164684779819754568515974931805299288032" //# 03: ok
-      "9467318908203746468430727830398768346578595574013759265666391011" //# 03: ok
-      "5651945906921898169113014030529134467663458535415036957197921783" //# 03: ok
-      "4550533979841101562169154890806946368370134291387467238490102415" //# 03: ok
-      "1863156959008792461225924284245693964036455110947393215135657241" //# 03: ok
-      "099571834741510656385798938572406768798828125", //# 03: ok
-      2.2250738585072024e-308); //# 03: ok
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000022250738585"
+      "0720212418870147920222032907240528279439037814303133837435107319"
+      "2441946867544064325638818513821882185024380699999477330130056498"
+      "8410779192874134192929720097048195199306799329096904278406473168"
+      "2041565926728632933630474670123316852983422152744517260835859654"
+      "5663192828352447877877998943107797838336991592885945552137141811"
+      "2845825114558431922307989750439508685941245723089173894616936837"
+      "2321191373658977977723286698840356390251044443035457396733706583"
+      "9810554204566938246584137476071559811765738776267476659123871999"
+      "3190400631733470900301279018817520344719025002806127777791679839"
+      "1090578584006464715943810511489154282775041174682194133952466682"
+      "5034313061815878293790042053923750720833666932415800027583911188"
+      "54188641513168478436313080237596295773983001708984375",
+      2.2250738585072024e-308);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000022250738585"
+      "0720212418870147920222032907240528279439056398987153733445293826"
+      "2841914532254970474258308397286505854246486958895941513684460970"
+      "4068152972799584860088646519366819731179394084384097665233499900"
+      "0755861120300770354269606853101364036287721693053184667205738737"
+      "5949174050909314222165141860993427546865066465011668770360303425"
+      "3994515112524200040764624453870560455886026635830913894056826102"
+      "6558396263994546949554344059607291509746117227014454385071719673"
+      "8131016897819660470375391476074607837156312396985947983896498558"
+      "1739504563131807656934782164684779819754568515974931805299288032"
+      "9467318908203746468430727830398768346578595574013759265666391011"
+      "5651945906921898169113014030529134467663458535415036957197921783"
+      "4550533979841101562169154890806946368370134291387467238490102415"
+      "1863156959008792461225924284245693964036455110947393215135657241"
+      "099571834741510656385798938572406768798828125",
+      2.2250738585072024e-308);
   testParse(
       "0.00000000000000000000000000000000000000000000000000000000000000"
       "0000000000000000000000000000000000000000000000000000000000000000"
@@ -895,26 +893,26 @@ void main() {
       "8909645359318233784351199339157645340492308605462312698364257812"
       "5",
       1.0020841800044864e-292);
-  testParse( //# 03: ok
-      "0.00000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000100208418000448650025174695" //# 03: ok
-      "1035150178458809017822159251011531515138151971877843746285762442" //# 03: ok
-      "8545112214057342269294258292239779301929355259416640067909319649" //# 03: ok
-      "7365336576866690449490575153391617964764463657240626936945707789" //# 03: ok
-      "0322677840073401894046998179185686691822730198820493814317137229" //# 03: ok
-      "5822164306994752582767555905533610628109411569344063803273395309" //# 03: ok
-      "4016739578124191615155910675820643598048478728683293279406596985" //# 03: ok
-      "3795142966229399885915374796852136102192598807080147602085351627" //# 03: ok
-      "7462738186176388661491270541112149644974737467220377156516124492" //# 03: ok
-      "5297987696655648150350049348782647584189423429523649017245633309" //# 03: ok
-      "0650703736050481424426844685046761507858235356421727632283550512" //# 03: ok
-      "9294184882356332903145058239310065886479547694117011957754993659" //# 03: ok
-      "5152049332041520812604025151794328168042160636342216519487980314" //# 03: ok
-      "421878240614097350935640662328296457417309284210205078125", //# 03: ok
-      1.0020841800044866e-292); //# 03: ok
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000100208418000448650025174695"
+      "1035150178458809017822159251011531515138151971877843746285762442"
+      "8545112214057342269294258292239779301929355259416640067909319649"
+      "7365336576866690449490575153391617964764463657240626936945707789"
+      "0322677840073401894046998179185686691822730198820493814317137229"
+      "5822164306994752582767555905533610628109411569344063803273395309"
+      "4016739578124191615155910675820643598048478728683293279406596985"
+      "3795142966229399885915374796852136102192598807080147602085351627"
+      "7462738186176388661491270541112149644974737467220377156516124492"
+      "5297987696655648150350049348782647584189423429523649017245633309"
+      "0650703736050481424426844685046761507858235356421727632283550512"
+      "9294184882356332903145058239310065886479547694117011957754993659"
+      "5152049332041520812604025151794328168042160636342216519487980314"
+      "421878240614097350935640662328296457417309284210205078125",
+      1.0020841800044866e-292);
   testParse(
       "0.00000000000000000000000000000000000000000000000000000000000000"
       "0000000000000000000000000000000000000000000000000000000000000000"
@@ -973,45 +971,45 @@ void main() {
       "4847950667958479187395974848205671831957839363657783480512019685"
       "578121759385902649064359337671703542582690715789794921875",
       2.0041683600089726e-292);
-  testParse( //# 03: ok
-      "0.00000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000200416836000897266674241512" //# 03: ok
-      "5990092893382710435783708701744713907322363070003179054747514262" //# 03: ok
-      "7385611700512865061525449421701203817286652851291627374287240329" //# 03: ok
-      "3753705169156289950978164746871212513772283206234057202629821353" //# 03: ok
-      "8809538439162226010550634208659737749820025430842192660178060615" //# 03: ok
-      "3474267718174236120090795958487048484027109406716660005865875254" //# 03: ok
-      "7540730218997620056025234843183240653494745917236268600971966054" //# 03: ok
-      "2572750817920844689872038240532666937066187074066929436725783508" //# 03: ok
-      "0513647350599865639683590212819431367049178252060735656411044144" //# 03: ok
-      "5314088186163138416702979387974756763836546863081940712096908853" //# 03: ok
-      "9929165937080868658779320353585122361868059050079309936626251244" //# 03: ok
-      "0765647609431766215648800660842354659507691394537687301635742187" //# 03: ok
-      "5", //# 03: ok
-      2.004168360008973e-292); //# 03: ok
-  testParse( //# 03: ok
-      "0.00000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000000000000000000000000000000" //# 03: ok
-      "0000000000000000000000000000000000000200416836000897266674241512" //# 03: ok
-      "5990092893382710435783708785442689934124446215379877007119186963" //# 03: ok
-      "1799271173601405540673717580039876412295823431198128133887844732" //# 03: ok
-      "7822096271111944266498822575337206743053529154538278267721206728" //# 03: ok
-      "1206759279588886755511816487266193645578706075743945771432529989" //# 03: ok
-      "5627720577353214542977288069464672781437627568914207256313896083" //# 03: ok
-      "6647266336088483105727658239269018534852601546443784653776612265" //# 03: ok
-      "4362171708319597782738064157144965045964873355636409438294693959" //# 03: ok
-      "3883447613213167389211587415988230219943616159642947883454256631" //# 03: ok
-      "7129850578881555219447792913718868827972321214300345663373246010" //# 03: ok
-      "5887233720340859229642766731751409169335306833113418201122555553" //# 03: ok
-      "1150187132469865334442659560994775205494930483192386561026478034" //# 03: ok
-      "5152049332041520812604025151794328168042160636342216519487980314" //# 03: ok
-      "421878240614097350935640662328296457417309284210205078125", //# 03: ok
-      2.004168360008973e-292); //# 03: ok
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000200416836000897266674241512"
+      "5990092893382710435783708701744713907322363070003179054747514262"
+      "7385611700512865061525449421701203817286652851291627374287240329"
+      "3753705169156289950978164746871212513772283206234057202629821353"
+      "8809538439162226010550634208659737749820025430842192660178060615"
+      "3474267718174236120090795958487048484027109406716660005865875254"
+      "7540730218997620056025234843183240653494745917236268600971966054"
+      "2572750817920844689872038240532666937066187074066929436725783508"
+      "0513647350599865639683590212819431367049178252060735656411044144"
+      "5314088186163138416702979387974756763836546863081940712096908853"
+      "9929165937080868658779320353585122361868059050079309936626251244"
+      "0765647609431766215648800660842354659507691394537687301635742187"
+      "5",
+      2.004168360008973e-292);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000200416836000897266674241512"
+      "5990092893382710435783708785442689934124446215379877007119186963"
+      "1799271173601405540673717580039876412295823431198128133887844732"
+      "7822096271111944266498822575337206743053529154538278267721206728"
+      "1206759279588886755511816487266193645578706075743945771432529989"
+      "5627720577353214542977288069464672781437627568914207256313896083"
+      "6647266336088483105727658239269018534852601546443784653776612265"
+      "4362171708319597782738064157144965045964873355636409438294693959"
+      "3883447613213167389211587415988230219943616159642947883454256631"
+      "7129850578881555219447792913718868827972321214300345663373246010"
+      "5887233720340859229642766731751409169335306833113418201122555553"
+      "1150187132469865334442659560994775205494930483192386561026478034"
+      "5152049332041520812604025151794328168042160636342216519487980314"
+      "421878240614097350935640662328296457417309284210205078125",
+      2.004168360008973e-292);
   testParse("0.99999999999999988897769753748434595763683319091796875",
       0.9999999999999999);
   testParse(
@@ -1024,14 +1022,14 @@ void main() {
       "4809443029054117700758095643512548748358614094344726684993771234"
       "576088145773464788135242997668683528900146484375",
       0.9999999999999999);
-  testParse( //# 03: ok
-      "0.999999999999999944488848768742172978818416595458984375", //# 03: ok
-      1.0); //# 03: ok
-  testParse( //# 03: ok
-      "0.99999999999999994448884876874217297881841659545898441676194859" //# 03: ok
-      "5190556970945882299241904356487451251641385905655273315006228765" //# 03: ok
-      "423911854226535211864757002331316471099853515625", //# 03: ok
-      1.0); //# 03: ok
+  testParse(
+      "0.999999999999999944488848768742172978818416595458984375",
+      1.0);
+  testParse(
+      "0.99999999999999994448884876874217297881841659545898441676194859"
+      "5190556970945882299241904356487451251641385905655273315006228765"
+      "423911854226535211864757002331316471099853515625",
+      1.0);
   testParse("0.499999999999999944488848768742172978818416595458984375",
       0.49999999999999994);
   testParse(
@@ -1044,14 +1042,14 @@ void main() {
       "2404721514527058850379047821756274374179307047172363342496885617"
       "2880440728867323940676214988343417644500732421875",
       0.49999999999999994);
-  testParse( //# 03: ok
-      "0.4999999999999999722444243843710864894092082977294921875", //# 03: ok
-      0.5); //# 03: ok
-  testParse( //# 03: ok
-      "0.49999999999999997224442438437108648940920829772949220838097429" //# 03: ok
-      "7595278485472941149620952178243725625820692952827636657503114382" //# 03: ok
-      "7119559271132676059323785011656582355499267578125", //# 03: ok
-      0.5); //# 03: ok
+  testParse(
+      "0.4999999999999999722444243843710864894092082977294921875",
+      0.5);
+  testParse(
+      "0.49999999999999997224442438437108648940920829772949220838097429"
+      "7595278485472941149620952178243725625820692952827636657503114382"
+      "7119559271132676059323785011656582355499267578125",
+      0.5);
   testParse("1.9999999999999997779553950749686919152736663818359375",
       1.9999999999999998);
   testParse(
@@ -1064,14 +1062,14 @@ void main() {
       "9618886058108235401516191287025097496717228188689453369987542469"
       "15217629154692957627048599533736705780029296875",
       1.9999999999999998);
-  testParse( //# 03: ok
-      "1.99999999999999988897769753748434595763683319091796875", //# 03: ok
-      2.0); //# 03: ok
-  testParse( //# 03: ok
-      "1.99999999999999988897769753748434595763683319091796883352389719" //# 03: ok
-      "0381113941891764598483808712974902503282771811310546630012457530" //# 03: ok
-      "84782370845307042372951400466263294219970703125", //# 03: ok
-      2.0); //# 03: ok
+  testParse(
+      "1.99999999999999988897769753748434595763683319091796875",
+      2.0);
+  testParse(
+      "1.99999999999999988897769753748434595763683319091796883352389719"
+      "0381113941891764598483808712974902503282771811310546630012457530"
+      "84782370845307042372951400466263294219970703125",
+      2.0);
   testParse("4503599627370495.5", 4503599627370495.5);
   testParse(
       "4503599627370495.50000000000000000000000000000000000018807909613"
@@ -1165,13 +1163,13 @@ void main() {
   testParse("1e-22", 1e-22);
   testParse("1e-23", 1e-23);
 
-  testParseWhitespace("1", 1.0); //# 04: ok
-  testParseWhitespace("1.0", 1.0); //# 04: ok
-  testParseWhitespace("1e1", 10.0); //# 04: ok
-  testParseWhitespace(".1e1", 1.0); //# 04: ok
-  testParseWhitespace("1.e1", 10.0); //# 04: ok
-  testParseWhitespace("1e+1", 10.0); //# 04: ok
-  testParseWhitespace("1e-1", 0.1); //# 04: ok
+  testParseWhitespace("1", 1.0);
+  testParseWhitespace("1.0", 1.0);
+  testParseWhitespace("1e1", 10.0);
+  testParseWhitespace(".1e1", 1.0);
+  testParseWhitespace("1.e1", 10.0);
+  testParseWhitespace("1e+1", 10.0);
+  testParseWhitespace("1e-1", 0.1);
 
   // Negative tests - things not to allow.
 
diff --git a/tests/corelib_2/double_try_parse_test.dart b/tests/corelib_2/double_try_parse_test.dart
new file mode 100644
index 00000000000..6ca51a3ec96
--- /dev/null
+++ b/tests/corelib_2/double_try_parse_test.dart
@@ -0,0 +1,1209 @@
+// Copyright (c) 2014 the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+// VMOptions=--no-use-field-guards
+// VMOptions=
+
+import "dart:math" show pow;
+import "package:expect/expect.dart";
+
+// U+0085 has been whitespace, isn't any more in all browsers.
+const whiteSpace = const [
+  "",
+  "\x09",
+  "\x0a",
+  "\x0b",
+  "\x0c",
+  "\x0d",
+  "\xa0",
+  "\u1680",
+  "\u2000",
+  "\u2001",
+  "\u2002",
+  "\u2003",
+  "\u2004",
+  "\u2005",
+  "\u2006",
+  "\u2007",
+  "\u2008",
+  "\u2009",
+  "\u200a",
+  "\u2028",
+  "\u2029",
+  "\u202f",
+  "\u205f",
+  "\u3000",
+  "\uFEFF"
+];
+
+void expectNumEquals(double expected, var actual, String message) {
+  if (expected.isNaN) {
+    Expect.isTrue(actual is double && actual.isNaN, "isNaN: $message");
+  } else {
+    Expect.identical(expected, actual, message);
+  }
+}
+
+// Test source surrounded by any combination of whitespace.
+void testParseAllWhitespace(String source, double result) {
+  for (String ws1 in whiteSpace) {
+    for (String ws2 in whiteSpace) {
+      String padded = "$ws1$source$ws2";
+      // Use Expect.identical because it also handles NaN and 0.0/-0.0.
+      // Except on dart2js: http://dartbug.com/11551
+      expectNumEquals(result, double.tryParse(padded), "parse '$padded'");
+      padded = "$ws1$ws2$source";
+      expectNumEquals(result, double.tryParse(padded), "parse '$padded'");
+      padded = "$source$ws1$ws2";
+      expectNumEquals(result, double.tryParse(padded), "parse '$padded'");
+    }
+  }
+}
+
+// Test source and -source surrounded by any combination of whitespace.
+void testParseWhitespace(String source, double result) {
+  assert(result >= 0);
+  testParseAllWhitespace(source, result);
+  testParseAllWhitespace("-$source", -result);
+}
+
+// Test parsing source, optionally preceeded and/or followed by whitespace.
+void testParse(String source, double result, [name = ""]) {
+  expectNumEquals(result, double.tryParse(source), "parse '$source:$name");
+  expectNumEquals(
+      result, double.tryParse(" $source"), "parse ' $source':$name");
+  expectNumEquals(
+      result, double.tryParse("$source "), "parse '$source ':$name");
+  expectNumEquals(
+      result, double.tryParse(" $source "), "parse ' $source ':$name");
+
+  expectNumEquals(result, double.tryParse("+$source"), "parse '+$source:$name");
+  expectNumEquals(
+      result, double.tryParse(" +$source"), "parse ' +$source':$name");
+  expectNumEquals(
+      result, double.tryParse("+$source "), "parse '+$source ':$name");
+  expectNumEquals(
+      result, double.tryParse(" +$source "), "parse ' +$source ':$name");
+
+  expectNumEquals(
+      -result, double.tryParse("-$source"), "parse '-$source:$name");
+  expectNumEquals(
+      -result, double.tryParse(" -$source"), "parse ' -$source':$name");
+  expectNumEquals(
+      -result, double.tryParse("-$source "), "parse '-$source ':$name");
+  expectNumEquals(
+      -result, double.tryParse(" -$source "), "parse ' -$source ':$name");
+}
+
+void testDouble(double value) {
+  testParse("$value", value);
+  if (value.isFinite) {
+    String exp = value.toStringAsExponential();
+    String lcexp = exp.toLowerCase();
+    testParse(lcexp, value);
+    String ucexp = exp.toUpperCase();
+    testParse(ucexp, value);
+  }
+}
+
+void testFail(String source) {
+  var object = new Object();
+  Expect.isNull(double.tryParse(source), "Fail: '$source'");
+}
+
+void main() {
+  testDouble(0.0);
+  testDouble(5e-324);
+  testDouble(2.225073858507201e-308);
+  testDouble(2.2250738585072014e-308);
+  testDouble(0.49999999999999994);
+  testDouble(0.5);
+  testDouble(0.50000000000000006);
+  testDouble(0.9999999999999999);
+  testDouble(1.0);
+  testDouble(1.0000000000000002);
+  testDouble(4294967295.0);
+  testDouble(4294967296.0);
+  testDouble(4503599627370495.5);
+  testDouble(4503599627370497.0);
+  testDouble(9007199254740991.0);
+  testDouble(9007199254740992.0);
+  testDouble(1.7976931348623157e+308);
+  testDouble(double.INFINITY);
+  testDouble(double.NAN);
+
+  // Strings that cannot occur from toString of a number.
+  testParse("000000000000", 0.0);
+  testParse("000000000001", 1.0);
+  testParse("000000000000.0000000000000", 0.0);
+  testParse("000000000001.0000000000000", 1.0);
+  testParse("0e0", 0.0);
+  testParse("0e+0", 0.0);
+  testParse("0e-0", 0.0);
+  testParse("1e0", 1.0);
+  testParse("1e+0", 1.0);
+  testParse("1e-0", 1.0);
+  testParse("1.", 1.0);
+  testParse(".1", 0.1);
+  testParse("1.e1", 10.0);
+  testParse(".1e1", 1.0);
+  testParse("Infinity", double.INFINITY);
+  testParse("NaN", double.NAN);
+
+  // Cases where mantissa and 10^exponent are representable as a double.
+  for (int i = -22; i <= 22; i++) {
+    for (double j in [1.0, 9007199254740991.0, 9007199254740992.0]) {
+      var value = (i >= 0) ? j * pow(10.0, i) : j / pow(10.0, -i);
+      testParse("${j}e$i", value, "$i/$j");
+      testParse("${j}E$i", value, "$i/$j");
+      if (i >= 0) {
+        testParse("${j}e+$i", value, "$i/$j");
+        testParse("${j}E+$i", value, "$i/$j");
+      }
+    }
+  }
+  for (int i = 0; i <= 22; i++) {
+    var digits = "9007199254740991";
+    for (int i = 0; i < digits.length; i++) {
+      int dotIndex = digits.length - i;
+      var string = "${digits.substring(0, dotIndex)}."
+          "${digits.substring(dotIndex)}e$i";
+      testParse(string, 9007199254740991.0);
+    }
+  }
+
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000012351641146031163604414219821705534309126495065358119110639"
+      "6420625168876817552187966324959090408998094949141173861429432731"
+      "6641775889849490996936990026954695315751782975778511319614542919"
+      "6224552592217965901424968268076250159685228839124609682811834931"
+      "8292403785007928846349518531559641397792756664639171692046759890"
+      "0776562329863178978731138323263641361002818700324274998854829973"
+      "5227010414083113118928696725368169503983880965288753370088162336"
+      "8004844756702677687292583305671118833393020810798402309572336459"
+      "2015026502876542452438269585569329582311976245631182694093981811"
+      "9686640211945509336174248834117544931694293962814151377997828762"
+      "2277536275946568454181273895934743339974841620248529105142565927"
+      "256981069188614130727188467062660492956638336181640625",
+      0.0);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000024703282292062327208828439643411068618252990130716238221279"
+      "2841250337753635104375932649918180817996189898282347722858865463"
+      "3283551779698981993873980053909390631503565951557022639229085839"
+      "2449105184435931802849936536152500319370457678249219365623669863"
+      "6584807570015857692699037063119282795585513329278343384093519780"
+      "1553124659726357957462276646527282722005637400648549997709659947"
+      "0454020828166226237857393450736339007967761930577506740176324673"
+      "6009689513405355374585166611342237666786041621596804619144672918"
+      "4030053005753084904876539171138659164623952491262365388187963623"
+      "9373280423891018672348497668235089863388587925628302755995657524"
+      "4555072551893136908362547791869486679949683240497058210285131854"
+      "51396213837722826145437693412532098591327667236328125",
+      0.0);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000024703282292062327208828439643411068618252990130716238221279"
+      "2841250337753635104375932649918180817996189898282347722858865463"
+      "3283551779698981993873980053909390631503565951557022639229085839"
+      "2449105184435931802849936536152500319370457678249219365623669863"
+      "6584807570015857692699037063119282795585513329278343384093519780"
+      "1553124659726357957462276646527282722005637400648549997709659947"
+      "0454020828166226237857393450736339007967761930577506740176324673"
+      "6009689513405355374585166611342237666786041621596804619144672918"
+      "4030053005753084904876539171138659164623952491262365388187963623"
+      "9373280423891018672348497668235089863388587925628302755995657524"
+      "4555072551893136908362547791869486679949683240497058210285131854"
+      "51396213837722826145437693412532098591327667236328125",
+      0.0);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000024703282292062327208828439643411068627545332140664243314532"
+      "8041234170109088178685677591650492652607243027730579814636067699"
+      "1112238669661707327453443265068702897439863329200619332642599205"
+      "1806252781222000513169502627641523911022607448403553068808609405"
+      "1727798181294290864842608522062097649849550765341204993205100587"
+      "2127469658709242016690593998242808606978027857019419997429604579"
+      "7572623273334010723772922131119806567715298322567005234345331218"
+      "5169920860031716486480793611343761679481328431956040281530986197"
+      "8304604971452253283193290744072288902141724247846767401941767720"
+      "8561650585989659548591956327689896895290365125294085321852619688"
+      "9863888974446146846024033780172178553364579041996676675092137151"
+      "9705456298034409473812692774776868254618683783877327369245051207"
+      "5931578479504396230612962142122846982018227555473696607567828620"
+      "5497859173707553281928994692862033843994140625", //
+      5e-324); //
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000037054923438093490813242659465116602918087143186126352238665"
+      "4061891674274999582254154033144959392383231717975289492511095959"
+      "2096640779585747657231506869704773681319051549691937265430115392"
+      "9316510179867828993955338712739726887403536747219495345250565253"
+      "9734220743745353366904984135736109339114232557854653467028698863"
+      "1755341990606652876965097618075398198036065644601954996844545287"
+      "8562428797081554870870561495721040952204106503876761616095480465"
+      "4854302923481671949982122917011832487483775622035971266330696098"
+      "1770527542930458978998057183774359009418156980309146068528141338"
+      "9871550473737887132279287842897827763181104688776671568136524122"
+      "1523792405286695424882335699501538146509629059245968850620692484"
+      "3143597161396297062546730578356156393213233025204703880754948792"
+      "4068421520495603769387037857877153017981772444526303392432171379"
+      "4502140826292446718071005307137966156005859375",
+      5e-324);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000037054923438093490813242659465116602927379485196074357331918"
+      "9261875506630452656563898974877271226994284847423521584288298194"
+      "9925327669548472990810970080864085947255348927335533958843628758"
+      "8673657776653897704274904804228750479055686517373829048435504795"
+      "4877211355023786539048555594678924193378269993917515076140279670"
+      "2329686989589536936193414969790924083008456100972824996564489920"
+      "5681031242249339356786090176104508511951642895866260110264487010"
+      "4014534270108033061877749917013356500179062432395206928717009377"
+      "6045079508629627357314808756707988746935928736893548082281945435"
+      "9059920635836528008522746502352634795082881888442454133993486286"
+      "6832608827839705362543821687804230019924524860745587315427697781"
+      "770943207565842392181565401187981478869915008544921875",
+      5e-324);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000037054923438093490813242659465116602936671827206022362425172"
+      "4461859338985905730873643916609583061605337976871753676065500430"
+      "7754014559511198324390433292023398213191646304979130652257142124"
+      "8030805373439966414594470895717774070707836287528162751620444337"
+      "0020201966302219711192127053621739047642307429980376685251860477"
+      "2904031988572420995421732321506449967980846557343694996284434553"
+      "2799633687417123842701618856487976071699179287855758604433493555"
+      "3174765616734394173773376917014880512874349242754442591103322657"
+      "0319631474328795735631560329641618484453700493477950096035749532"
+      "8248290797935168884766205161807441826984659088108236699850448451"
+      "2141425250392715300205307676106921893339420662245205780234703079"
+      "2275266989920550781084577445403473184185067145693733619245051207"
+      "5931578479504396230612962142122846982018227555473696607567828620"
+      "5497859173707553281928994692862033843994140625",
+      5e-324);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000049406564584124654417656879286822137236505980261432476442558"
+      "5682500675507270208751865299836361635992379796564695445717730926"
+      "6567103559397963987747960107818781263007131903114045278458171678"
+      "4898210368871863605699873072305000638740915356498438731247339727"
+      "3169615140031715385398074126238565591171026658556686768187039560"
+      "3106249319452715914924553293054565444011274801297099995419319894"
+      "0908041656332452475714786901472678015935523861155013480352649347"
+      "2019379026810710749170333222684475333572083243193609238289345836"
+      "8060106011506169809753078342277318329247904982524730776375927247"
+      "8746560847782037344696995336470179726777175851256605511991315048"
+      "9110145103786273816725095583738973359899366480994116420570263709"
+      "0279242767544565229087538682506419718265533447265625",
+      5e-324);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000049406564584124654417656879286822137255090664281328486629065"
+      "6082468340218176357371355183300985305214486055461159629272135398"
+      "2224477339323414654906886530137405794879726658401238665285198410"
+      "3612505562444001026339005255283047822045214896807106137617218810"
+      "3455596362588581729685217044124195299699101530682409986410201174"
+      "4254939317418484033381187996485617213956055714038839994859209159"
+      "5145246546668021447545844262239613135430596645134010468690662437"
+      "0339841720063432972961587222687523358962656863912080563061972395"
+      "6609209942904506566386581488144577804283448495693534803883535441"
+      "7123301171979319097183912655379793790580730250588170643705239377"
+      "9727777948892293692048067560344357106729158083993353350184274303"
+      "9410912596068818947625385549553736509237367567754654738490102415"
+      "1863156959008792461225924284245693964036455110947393215135657241"
+      "099571834741510656385798938572406768798828125",
+      5e-324);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000074109846876186981626485318930233205836174286372252704477330"
+      "8123783348549999164508308066289918784766463435950578985022191918"
+      "4193281559171495314463013739409547362638103099383874530860230785"
+      "8633020359735657987910677425479453774807073494438990690501130507"
+      "9468441487490706733809968271472218678228465115709306934057397726"
+      "3510683981213305753930195236150796396072131289203909993689090575"
+      "7124857594163109741741122991442081904408213007753523232190960930"
+      "9708605846963343899964245834023664974967551244071942532661392196"
+      "3541055085860917957996114367548718018836313960618292137056282677"
+      "9743100947475774264558575685795655526362209377553343136273048244"
+      "3047584810573390849764671399003076293019258118491937701241384968"
+      "6287194322792594125093461156712312786426466050409407761509897584"
+      "8136843040991207538774075715754306035963544889052606784864342758"
+      "900428165258489343614201061427593231201171875",
+      5e-324);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000074109846876186981626485318930233205854758970392148714663837"
+      "8523751013260905313127797949754542453988569694847043168576596389"
+      "9850655339096945981621940161728171894510697854671067917687257517"
+      "7347315553307795408549809608457500958111373034747658096871009590"
+      "9754422710047573078097111189357848386756539987835030152280559340"
+      "4659373979179073872386829939581848166016912201945649993128979841"
+      "1362062484498678713572180352209017023903285791732520220528974020"
+      "8029068540216066123755499834026713000358124864790413857434018755"
+      "2090159017259254714629617513415977493871857473787096164563890871"
+      "8119841271673056017045493004705269590165763776884908267986972573"
+      "3665217655679410725087643375608460039849049721491174630855395563"
+      "54188641513168478436313080237596295773983001708984375", //
+      1e-323); //
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000074109846876186981626485318930233205873343654412044724850344"
+      "8923718677971811461747287833219166123210675953743507352131000861"
+      "5508029119022396648780866584046796426383292609958261304514284249"
+      "6061610746879932829188941791435548141415672575056325503240888674"
+      "0040403932604439422384254107243478095284614859960753370503720954"
+      "5808063977144841990843464643012899935961693114687389992568869106"
+      "5599267374834247685403237712975952143398358575711517208866987110"
+      "6349531233468788347546753834029761025748698485508885182206645314"
+      "0639262948657591471263120659283236968907400986955900192071499065"
+      "6496581595870337769532410323614883653969318176216473399700896902"
+      "4282850500785430600410615352213843786678841324490411560469406158"
+      "4550533979841101562169154890806946368370134291387467238490102415"
+      "1863156959008792461225924284245693964036455110947393215135657241"
+      "099571834741510656385798938572406768798828125", //
+      1e-323); //
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000011125369292"
+      "5360069154511635866620203210960799023116591527666370844360221740"
+      "6959097927141579506255510282033669865517905502576217080776730054"
+      "4280061926888594105653889967660011652398050737212918180359607825"
+      "2347125186710418762540332530832907947436024558998429581982425031"
+      "7954385059152437399890443876874974725790225802525457699928291235"
+      "4093225567689679024960579905428830259962166760571761950743978498"
+      "0479564444580149632075553173315669683173879325651468588102366281"
+      "5890742832175436061414318821022423405703806955738531400844926622"
+      "0550120807237108092835830752700771425423583764509515806613894483"
+      "6485368656166704349449158753391942346304638698898642932982747054"
+      "5684547703068233784351199339157645340492308605462312698364257812"
+      "5",
+      1.1125369292536007e-308);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000011125369292"
+      "5360069154511635866620203210960799023116610112350390740370408247"
+      "7359065591852485654875000165498293534740011761472681264331134525"
+      "9937435706814044772812816389978636184270645492500111567186634557"
+      "1061420380282556183179464713810955130740324099307096988352304114"
+      "8240366281709303744177586794760604434318300674651180918151452849"
+      "5241915565655447143417214608859882029906947673313501950183867763"
+      "4716769334915718603906610534082604802668952109630465576440379371"
+      "4211205525428158285205572821025471431094380576457002725617553180"
+      "9099224738635444849469333898568030900459127277678319834121502677"
+      "4862108980363986101936076072301556410108193098230208064696671383"
+      "6302180548174253659674171315763029087322100208461549627978268407"
+      "4131669828524253718537846867047316790971834120489029738490102415"
+      "1863156959008792461225924284245693964036455110947393215135657241"
+      "099571834741510656385798938572406768798828125",
+      1.1125369292536007e-308);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000011125369292"
+      "5360093857793927928947412039400442434185191195972481664588256512"
+      "9400380600184308462011953048487227014291989141962100620081191046"
+      "1906239926662125432368943599250777752029021933482747432761666932"
+      "6081935177574213144751136884007361083502182696938981541236215812"
+      "4253211406611428748302338022108627812847664259678077865798649401"
+      "4497660229450268863966221848525061212023023248478571949013749179"
+      "6696380382410806898101889263285073571646568472249978339940677865"
+      "3579969652328069212208231432361613047099274956616864695216972981"
+      "6031069881591856241078866777972171115011992742603077167294249913"
+      "7481908755860441269310739102717418145889672225195380557264480249"
+      "9621987409855350817390775154421748273612200242960133979035379072"
+      "1007951555248028896005922474205893068160932603143782761509897584"
+      "8136843040991207538774075715754306035963544889052606784864342758"
+      "900428165258489343614201061427593231201171875",
+      1.1125369292536007e-308);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000011125369292"
+      "5360093857793927928947412039400442434185209780656501560598443019"
+      "9800348264895214610631442931951850683514095400858564803635595517"
+      "7563613706587576099527870021569402283901616688769940819588693664"
+      "4796230371146350565390269066985408266806482237247648947606094895"
+      "4539192629168295092589480939994257521375739131803801084021811015"
+      "5646350227416036982422856551956112981967804161220311948453638445"
+      "0933585272746375869932946624052008691141641256228975328278690955"
+      "1900432345580791435999485432364661072489848577335336019989599540"
+      "4580173812990192997712369923839430590047536255771881194801858107"
+      "5858649080057723021797656421627032209693226624526945688978404579"
+      "0239620254961370692713747131027132020441991845959370908649389667"
+      "01396213837722826145437693412532098591327667236328125",
+      1.1125369292536007e-308);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000011125369292"
+      "5360093857793927928947412039400442434185228365340521456608629527"
+      "0200315929606120759250932815416474352736201659755028987189999989"
+      "3220987486513026766686796443888026815774211444057134206415720396"
+      "3510525564718487986029401249963455450110781777556316353975973978"
+      "4825173851725161436876623857879887229903814003929524302244972629"
+      "6795040225381805100879491255387164751912585073962051947893527710"
+      "5170790163081944841764003984818943810636714040207972316616704045"
+      "0220895038833513659790739432367709097880422198053807344762226099"
+      "3129277744388529754345873069706690065083079768940685222309466301"
+      "4235389404255004774284573740536646273496781023858510820692328908"
+      "0857253100067390568036719107632515767271783448958607838263400261"
+      "9271291212296536333081616208300526650104600844121842238490102415"
+      "1863156959008792461225924284245693964036455110947393215135657241"
+      "099571834741510656385798938572406768798828125", //
+      1.112536929253601e-308); //
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000011125369292"
+      "5360118561076219991274620867840085845253828033646632276836664299"
+      "2641598602648849715007375581870031501510285299140912526494460981"
+      "0847165486286558093401850075478792915405182640326963458817779503"
+      "7245335555582282368240205603137908586176939915496868313229764759"
+      "1124000199184152785288518003113540316961252461082144468115330795"
+      "7199474887142394939885133198483395703973441561868861946163298392"
+      "1387606100912602107790340074788347699109403186806482068455015628"
+      "7910121858986146810584652043706898739275890198932140639134272458"
+      "8610226818743277902588909094978089754671488747034246582989821731"
+      "5231929503948741694146154089862122073081814550155248444974062103"
+      "4794692806854507601076294922896618700391675086456429118934521521"
+      "5279242767544565229087538682506419718265533447265625",
+      1.112536929253601e-308);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000011125369292"
+      "5360118561076219991274620867840085845253846618330652172846850806"
+      "3041566267359755863626865465334655170732391558037376710048865452"
+      "6504539266212008760560776497797417447277777395614156845644806235"
+      "5959630749154419788879337786115955769481239455805535719599643842"
+      "1409981421741019129575660920999170025489327333207867686338492409"
+      "8348164885108163058341767901914447473918222474610601945603187657"
+      "5624810991248171079621397435555282818604475970785479056793028718"
+      "6230584552238869034375906043709946764666463819650611963906899017"
+      "7159330750141614659222412240845349229707032260203050610497429925"
+      "3608669828146023446633071408771736136885368949486813576687986432"
+      "5412325651960527476399266899502002447221466689455666048548532116"
+      "4410912596068818947625385549553736509237367567754654738490102415"
+      "1863156959008792461225924284245693964036455110947393215135657241"
+      "099571834741510656385798938572406768798828125",
+      1.112536929253601e-308);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000011125369292"
+      "5360143264358512053601829696279729256322427701952743097064699071"
+      "5082881275691578670763818348323588650284368938526796065798921972"
+      "8473343486060089420116903707069559015036153836596792711219838611"
+      "0980145546446076750451009956312361722243098053437420272483555539"
+      "7422826546643144133700412148347193404018690918234764633985688961"
+      "7603909548902984778890775141579626656034298049775671944433069073"
+      "7604422038743259373816676164757751587582092333404991820293327212"
+      "5599348679138779961378564655046088380671358199810473933506318818"
+      "4091175893098026050831945120249489444259897725127807943670177161"
+      "6228469603642478614007734439187597872666848076451986069255795298"
+      "8732132513641624634115870738160721633511566723954250399605642781"
+      "1287194322792594125093461156712312786426466050409407761509897584"
+      "8136843040991207538774075715754306035963544889052606784864342758"
+      "900428165258489343614201061427593231201171875",
+      1.112536929253601e-308);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000011125369292"
+      "5360143264358512053601829696279729256322446286636762993074885578"
+      "5482848940402484819383308231788212319506475197423260249353326444"
+      "4130717265985540087275830129388183546908748591883986098046865342"
+      "9694440740018214171090142139290408905547397593746087678853434622"
+      "7708807769200010477987555066232823112546765790360487852208850575"
+      "8752599546868752897347409845010678425979078962517411943872958339"
+      "1841626929078828345647733525524686707077165117383988808631340302"
+      "3919811372391502185169818655049136406061931820528945258278945377"
+      "2640279824496362807465448266116748919295441238296611971177785355"
+      "4605209927839760366494651758097211936470402475783551200969719627"
+      "9349765358747644509438842714766105380341358326953487329219653376"
+      "04188641513168478436313080237596295773983001708984375", //
+      1.1125369292536017e-308); //
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000011125369292"
+      "5360143264358512053601829696279729256322464871320782889085072085"
+      "5882816605113390968002798115252835988728581456319724432907730915"
+      "9788091045910990754434756551706808078781343347171179484873892074"
+      "8408735933590351591729274322268456088851697134054755085223313705"
+      "7994788991756876822274697984118452821074840662486211070432012189"
+      "9901289544834521015804044548441730195923859875259151943312847604"
+      "6078831819414397317478790886291621826572237901362985796969353392"
+      "2240274065644224408961072655052184431452505441247416583051571936"
+      "1189383755894699564098951411984008394330984751465415998685393549"
+      "2981950252037042118981569077006826000273956875115116332683643956"
+      "9967398203853664384761814691371489127171149929952724258833663970"
+      "9550533979841101562169154890806946368370134291387467238490102415"
+      "1863156959008792461225924284245693964036455110947393215135657241"
+      "099571834741510656385798938572406768798828125", //
+      1.1125369292536017e-308); //
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000022250738585"
+      "0720138309023271733240406421921598046233183055332741688720443481"
+      "3918195854283159012511020564067339731035811005152434161553460108"
+      "8560123853777188211307779935320023304796101474425836360719215650"
+      "4694250373420837525080665061665815894872049117996859163964850063"
+      "5908770118304874799780887753749949451580451605050915399856582470"
+      "8186451135379358049921159810857660519924333521143523901487956996"
+      "0959128889160299264151106346631339366347758651302937176204732563"
+      "1781485664350872122828637642044846811407613911477062801689853244"
+      "1100241614474216185671661505401542850847167529019031613227788967"
+      "2970737312333408698898317506783884692609277397797285865965494109"
+      "1369095406136467568702398678315290680984617210924625396728515625",
+      2.2250738585072014e-308);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000022250738585"
+      "0720138309023271733240406421921598046233201640016761584730629988"
+      "4318163518994065161130510447531963400257917264048898345107864580"
+      "4217497633702638878466706357638647836668696229713029747546242382"
+      "3408545566992974945719797244643863078176348658305526570334729146"
+      "6194751340861741144068030671635579160108526477176638618079744084"
+      "9335141133345126168377794514288712289869114433885263900927846261"
+      "5196333779495868235982163707398274485842831435281934164542745653"
+      "0101948357603594346619891642047894836798187532195534126462479802"
+      "9649345545872552942305164651268802325882711042187835640735397161"
+      "1347477636530690451385234825693498756412831797128850997679418438"
+      "1986728251242487444025370654920674427814408813923862326342526219"
+      "9131669828524253718537846867047316790971834120489029738490102415"
+      "1863156959008792461225924284245693964036455110947393215135657241"
+      "099571834741510656385798938572406768798828125",
+      2.2250738585072014e-308);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000022250738585"
+      "0720163012305563795567615250361241457301782723638852508948478253"
+      "6359478527325887968267463330520896879809894644538317700857921100"
+      "6186301853550719538022833566910789404427072670695665613121274757"
+      "8429060364284631907291469414840269030938207255937411123218640844"
+      "2207596465763866148192781898983602538637890062203535565726940636"
+      "8590885797139947888926801753953891471985190009050333899757727677"
+      "7175944826990956530177442436600743254820447797901446928043044146"
+      "9470712484503505273622550253384036452803081912355396096061899603"
+      "6581190688828964333914697530672942540435576507112592973908144397"
+      "3967277412027145618759897856109360492194310924094023490247227304"
+      "5306535112923584601741974493579393614104508848422446677399636884"
+      "6007951555248028896005922474205893068160932603143782761509897584"
+      "8136843040991207538774075715754306035963544889052606784864342758"
+      "900428165258489343614201061427593231201171875",
+      2.2250738585072014e-308);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000022250738585"
+      "0720163012305563795567615250361241457301801308322872404958664760"
+      "6759446192036794116886953213985520549032000903434781884412325572"
+      "1843675633476170205181759989229413936299667425982858999948301489"
+      "7143355557856769327930601597818316214242506796246078529588519927"
+      "2493577688320732492479924816869232247165964934329258783950102250"
+      "9739575795105716007383436457384943241929970921792073899197616943"
+      "1413149717326525502008499797367678374315520581880443916381057236"
+      "7791175177756227497413804253387084478193655533073867420834526162"
+      "5130294620227301090548200676540202015471120020281397001415752591"
+      "2344017736224427371246815175018974555997865323425588621961151633"
+      "5924167958029604477064946470184777360934300451421683607013647479"
+      "51396213837722826145437693412532098591327667236328125",
+      2.2250738585072014e-308);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000022250738585"
+      "0720163012305563795567615250361241457301819893006892300968851267"
+      "7159413856747700265506443097450144218254107162331246067966730043"
+      "7501049413401620872340686411548038468172262181270052386775328221"
+      "5857650751428906748569733780796363397546806336554745935958399010"
+      "2779558910877598836767067734754861955694039806454982002173263865"
+      "0888265793071484125840071160815995011874751834533813898637506208"
+      "5650354607662094473839557158134613493810593365859440904719070326"
+      "6111637871008949721205058253390132503584229153792338745607152721"
+      "3679398551625637847181703822407461490506663533450201028923360785"
+      "0720758060421709123733732493928588619801419722757153753675075962"
+      "6541800803135624352387918446790161107764092054420920536627658074"
+      "4271291212296536333081616208300526650104600844121842238490102415"
+      "1863156959008792461225924284245693964036455110947393215135657241"
+      "099571834741510656385798938572406768798828125", //
+      2.225073858507202e-308); //
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000022250738585"
+      "0720187715587855857894824078800884868370419561313003121196886039"
+      "9600696529790429221262885863903701367028190801717129607271191035"
+      "5127227413175152199055740043138804567803233377539881639177387328"
+      "9592460742292701130780538133970816533612964474495297895212189790"
+      "9078385258336590185178961879988515042751478263607602168043622031"
+      "1292700454832073964845713103912225963935608322440623896907276890"
+      "1867170545492751739865893248104017382283282512457950656557381910"
+      "3800864691161582871998970864729322144979697154670672039979199080"
+      "9160347625980385995424739847678861180095072511543762389603716215"
+      "1717298160115446043595312843254064419386453249053891377956809158"
+      "0479240509922741385427494262054264040883983691918741817298779334"
+      "0279242767544565229087538682506419718265533447265625",
+      2.225073858507202e-308);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000022250738585"
+      "0720187715587855857894824078800884868370438145997023017207072547"
+      "0000664194501335369882375747368325036250297060613593790825595507"
+      "0784601193100602866214666465457429099675828132827075026004414060"
+      "8306755935864838551419670316948863716917264014803965301582068873"
+      "9364366480893456529466104797874144751279553135733325386266783645"
+      "2441390452797842083302347807343277733880389235182363896347166155"
+      "6104375435828320711696950608870952501778355296436947644895395000"
+      "2121327384414305095790224864732370170370270775389143364751825639"
+      "7709451557378722752058242993546120655130616024712566417111324409"
+      "0094038484312727796082230162163678483190007648385456509670733487"
+      "1096873355028761260750466238659647787713775294917978746912789928"
+      "9410912596068818947625385549553736509237367567754654738490102415"
+      "1863156959008792461225924284245693964036455110947393215135657241"
+      "099571834741510656385798938572406768798828125",
+      2.225073858507202e-308);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000022250738585"
+      "0720212418870147920222032907240528279439019229619113941424920812"
+      "2041979202833158177019328630357258515802274441103013146575652027"
+      "2753405412948683525770793674729570667434204573809710891579446436"
+      "3327270733156495512991342487145269669679122612435849854465980571"
+      "5377211605795581533590856025222168129808916720760222333913980197"
+      "1697135116592663803851355047008456915996464810347433895177047571"
+      "8083986483323409005892229338073421270755971659056460408395693494"
+      "1490091511314216022792883476068511786375165155549005334351245440"
+      "4641296700335134143667775872950260869683481489637323750284071645"
+      "2713838259809182963456893192579540218971486775350629002238542353"
+      "4416680216709858418467070077318366974003875329416563097969900593"
+      "6287194322792594125093461156712312786426466050409407761509897584"
+      "8136843040991207538774075715754306035963544889052606784864342758"
+      "900428165258489343614201061427593231201171875",
+      2.225073858507202e-308);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000022250738585"
+      "0720212418870147920222032907240528279439037814303133837435107319"
+      "2441946867544064325638818513821882185024380699999477330130056498"
+      "8410779192874134192929720097048195199306799329096904278406473168"
+      "2041565926728632933630474670123316852983422152744517260835859654"
+      "5663192828352447877877998943107797838336991592885945552137141811"
+      "2845825114558431922307989750439508685941245723089173894616936837"
+      "2321191373658977977723286698840356390251044443035457396733706583"
+      "9810554204566938246584137476071559811765738776267476659123871999"
+      "3190400631733470900301279018817520344719025002806127777791679839"
+      "1090578584006464715943810511489154282775041174682194133952466682"
+      "5034313061815878293790042053923750720833666932415800027583911188"
+      "54188641513168478436313080237596295773983001708984375", //
+      2.2250738585072024e-308); //
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000022250738585"
+      "0720212418870147920222032907240528279439056398987153733445293826"
+      "2841914532254970474258308397286505854246486958895941513684460970"
+      "4068152972799584860088646519366819731179394084384097665233499900"
+      "0755861120300770354269606853101364036287721693053184667205738737"
+      "5949174050909314222165141860993427546865066465011668770360303425"
+      "3994515112524200040764624453870560455886026635830913894056826102"
+      "6558396263994546949554344059607291509746117227014454385071719673"
+      "8131016897819660470375391476074607837156312396985947983896498558"
+      "1739504563131807656934782164684779819754568515974931805299288032"
+      "9467318908203746468430727830398768346578595574013759265666391011"
+      "5651945906921898169113014030529134467663458535415036957197921783"
+      "4550533979841101562169154890806946368370134291387467238490102415"
+      "1863156959008792461225924284245693964036455110947393215135657241"
+      "099571834741510656385798938572406768798828125", //
+      2.2250738585072024e-308); //
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000100208418000448638899805402"
+      "5675081023947173151201955956352756465219477298834774949553868001"
+      "7172354813827222283890479851867436841402279176933922227531985191"
+      "9016883548022442028316027357265612083085166971723487691494714589"
+      "5578331812936322386545483369746322848628024994920311121080242823"
+      "5714326388663336759990619917681011604908667604621058852897083245"
+      "0816977893343649540492907374306035456728456338904015275857972276"
+      "1526157631250497160973795706924168310120033199859199012414074894"
+      "8202195091387650850548954516920927386376492603899633528627985383"
+      "2932104496700123254769405070337764094630065313795728259355401668"
+      "8207267296623786504114239553488532354086348874488976434804499149"
+      "322509765625",
+      1.0020841800044864e-292);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000100208418000448638899805402"
+      "5675081023947173151201956040050732492021560444211472901925540702"
+      "1586014286915762763038748010206109436411449756840422987132589595"
+      "3085274649978096343836685185731606312366412920027708756586099963"
+      "7975552653362983131506665648352778744386705639822064232334712197"
+      "7867779247842315182877112028658635902319185766818606103345104073"
+      "9923514010434512590195330770391813338086311968111531328662618487"
+      "3315578521649250253839821623536466419018719481428679013982985346"
+      "1571995354000952600076951720089726239270930511481845755671197870"
+      "4747866889418540057514218596081876158765839665014133210631738825"
+      "4165335079883777074977685931654819161553596657523084699300803458"
+      "3609637179288099118793858900152420545987239088654699259390735847"
+      "0152049332041520812604025151794328168042160636342216519487980314"
+      "421878240614097350935640662328296457417309284210205078125",
+      1.0020841800044864e-292);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000100208418000448650025174695"
+      "1035150178458809017822159083615579461533985681124447841542417041"
+      "9717793267880261310997721975562434111911014099603638548708110842"
+      "9228554372955381818449259496459629506201971760632184806762937040"
+      "5528236159220080404124633621972774900305368909016987591808198481"
+      "1515258588636795736994571683578362033288375244948969302377353651"
+      "5803667343942465515751063883649087835332767470268261173797304563"
+      "0216301185431893700183322963627539884395226243941187598947530725"
+      "0723137660949785162435276134774551939185861652055952702429699518"
+      "1666462911218814544860422297294423455917874727086839114692958995"
+      "8734568169530500282699951928714187892923739790353511103290941894"
+      "8525105836280134665557340439005224794505069516807613438973521965"
+      "4847950667958479187395974848205671831957839363657783480512019685"
+      "578121759385902649064359337671703542582690715789794921875",
+      1.0020841800044864e-292);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000100208418000448650025174695"
+      "1035150178458809017822159167313555488336068826501145793914089742"
+      "4131452740968801790145990133901106706920184679510139308308715246"
+      "3296945474911036133969917324925623735483217708936405871854322414"
+      "7925456999646741149085815900579230796064049553918740703062667855"
+      "3668711447815774159881063794555986330698893407146516552825374480"
+      "4910203461033328565453487279734865716690623099475777226601950774"
+      "2005722075830646793049348880239837993293912525510667600516441176"
+      "4092937923563086911963273337943350792080299559638164929472912005"
+      "3482225303937231347605235823038535520053649078305244065969296152"
+      "4692635952790490853563398306880474700390987573387619367787246203"
+      "8909645359318233784351199339157645340492308605462312698364257812"
+      "5",
+      1.0020841800044864e-292);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000100208418000448650025174695"
+      "1035150178458809017822159251011531515138151971877843746285762442"
+      "8545112214057342269294258292239779301929355259416640067909319649"
+      "7365336576866690449490575153391617964764463657240626936945707789"
+      "0322677840073401894046998179185686691822730198820493814317137229"
+      "5822164306994752582767555905533610628109411569344063803273395309"
+      "4016739578124191615155910675820643598048478728683293279406596985"
+      "3795142966229399885915374796852136102192598807080147602085351627"
+      "7462738186176388661491270541112149644974737467220377156516124492"
+      "5297987696655648150350049348782647584189423429523649017245633309"
+      "0650703736050481424426844685046761507858235356421727632283550512"
+      "9294184882356332903145058239310065886479547694117011957754993659"
+      "5152049332041520812604025151794328168042160636342216519487980314"
+      "421878240614097350935640662328296457417309284210205078125", //
+      1.0020841800044866e-292); //
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000200416836000897255548872220"
+      "0630023738871074569163505490783914884205771542336808210387292522"
+      "0426513773371285555269939139667533951768747348715410293510510274"
+      "9473643242267695845324274779211200861374232469021139022270213528"
+      "6462413252451807248010301677826829802384000871843763078195635583"
+      "5519882659021798720200352081612073758236883604191202305937584019"
+      "3447504651307941031064654937754410393532579156664506650227987556"
+      "2093186373340695057796485067216997253892307748415460848623417226"
+      "4622904518424429578269271391797007961345371296322204255566117522"
+      "4763967378926030323867148635273985338412963098572424905483014370"
+      "3443797280914164309330161600193180015563420351180667003643504189"
+      "5081099906363532431297601321684709319015382789075374603271484375",
+      2.0041683600089726e-292);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000200416836000897255548872220"
+      "0630023738871074569163505574481890911007854687713506162758965222"
+      "4840173246459826034418207298006206546777917928621911053111114678"
+      "3542034344223350160844932607677195090655478417325360087361598902"
+      "8859634092878467992971483956433285698142681516745516189450104957"
+      "7673335518200777143086844192589698055647401766388749556385604848"
+      "2554040768398804080767078333840188274890434785872022703032633767"
+      "3882607263739448150662510983829295362790994029984940850192327677"
+      "7992704781037731327797268594965806814239809203904416482609330009"
+      "6579729771644447126611962161018097402548737449790829856759351526"
+      "9401865064174154880193607978359466823030668134214775268139808498"
+      "5465639429401631550091460221837129865002621877730073862662220222"
+      "0152049332041520812604025151794328168042160636342216519487980314"
+      "421878240614097350935640662328296457417309284210205078125",
+      2.0041683600089726e-292);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000200416836000897266674241512"
+      "5990092893382710435783708618046737880520279924626481102375841562"
+      "2971952227424324582377181263362531222277482271385126614686635925"
+      "9685314067200635635457506918405218284491037257929836137538435979"
+      "6412317598735565265589451930053281854061344785940439548923591241"
+      "1320814858995257697204303847509424186616591244519112755417854425"
+      "8434194101906757006322811447097462772136890288028752548167319843"
+      "0783329927522091597006012323920368828167500792497449435156873056"
+      "7143847087986563890155593009650632514154740344478523429367831657"
+      "3498325793444721613958165862230644699700772511863535760820571697"
+      "3971098153820878087915873975418835554400811267045201672129946935"
+      "0381108086393667096854941760689934113520452305882988042245006340"
+      "4847950667958479187395974848205671831957839363657783480512019685"
+      "578121759385902649064359337671703542582690715789794921875",
+      2.0041683600089726e-292);
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000200416836000897266674241512"
+      "5990092893382710435783708701744713907322363070003179054747514262"
+      "7385611700512865061525449421701203817286652851291627374287240329"
+      "3753705169156289950978164746871212513772283206234057202629821353"
+      "8809538439162226010550634208659737749820025430842192660178060615"
+      "3474267718174236120090795958487048484027109406716660005865875254"
+      "7540730218997620056025234843183240653494745917236268600971966054"
+      "2572750817920844689872038240532666937066187074066929436725783508"
+      "0513647350599865639683590212819431367049178252060735656411044144"
+      "5314088186163138416702979387974756763836546863081940712096908853"
+      "9929165937080868658779320353585122361868059050079309936626251244"
+      "0765647609431766215648800660842354659507691394537687301635742187"
+      "5", //
+      2.004168360008973e-292); //
+  testParse(
+      "0.00000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000000000000000000000000000000"
+      "0000000000000000000000000000000000000200416836000897266674241512"
+      "5990092893382710435783708785442689934124446215379877007119186963"
+      "1799271173601405540673717580039876412295823431198128133887844732"
+      "7822096271111944266498822575337206743053529154538278267721206728"
+      "1206759279588886755511816487266193645578706075743945771432529989"
+      "5627720577353214542977288069464672781437627568914207256313896083"
+      "6647266336088483105727658239269018534852601546443784653776612265"
+      "4362171708319597782738064157144965045964873355636409438294693959"
+      "3883447613213167389211587415988230219943616159642947883454256631"
+      "7129850578881555219447792913718868827972321214300345663373246010"
+      "5887233720340859229642766731751409169335306833113418201122555553"
+      "1150187132469865334442659560994775205494930483192386561026478034"
+      "5152049332041520812604025151794328168042160636342216519487980314"
+      "421878240614097350935640662328296457417309284210205078125", //
+      2.004168360008973e-292); //
+  testParse("0.99999999999999988897769753748434595763683319091796875",
+      0.9999999999999999);
+  testParse(
+      "0.99999999999999988897769753748434595763683319091796879176194859"
+      "5190556970945882299241904356487451251641385905655273315006228765"
+      "423911854226535211864757002331316471099853515625",
+      0.9999999999999999);
+  testParse(
+      "0.99999999999999994448884876874217297881841659545898433323805140"
+      "4809443029054117700758095643512548748358614094344726684993771234"
+      "576088145773464788135242997668683528900146484375",
+      0.9999999999999999);
+  testParse("0.999999999999999944488848768742172978818416595458984375", 1.0); //
+  testParse(
+      "0.99999999999999994448884876874217297881841659545898441676194859"
+      "5190556970945882299241904356487451251641385905655273315006228765"
+      "423911854226535211864757002331316471099853515625", //
+      1.0); //
+  testParse("0.499999999999999944488848768742172978818416595458984375",
+      0.49999999999999994);
+  testParse(
+      "0.49999999999999994448884876874217297881841659545898439588097429"
+      "7595278485472941149620952178243725625820692952827636657503114382"
+      "7119559271132676059323785011656582355499267578125",
+      0.49999999999999994);
+  testParse(
+      "0.49999999999999997224442438437108648940920829772949216661902570"
+      "2404721514527058850379047821756274374179307047172363342496885617"
+      "2880440728867323940676214988343417644500732421875",
+      0.49999999999999994);
+  testParse(
+      "0.4999999999999999722444243843710864894092082977294921875", 0.5); //
+  testParse(
+      "0.49999999999999997224442438437108648940920829772949220838097429"
+      "7595278485472941149620952178243725625820692952827636657503114382"
+      "7119559271132676059323785011656582355499267578125", //
+      0.5); //
+  testParse("1.9999999999999997779553950749686919152736663818359375",
+      1.9999999999999998);
+  testParse(
+      "1.99999999999999977795539507496869191527366638183593758352389719"
+      "0381113941891764598483808712974902503282771811310546630012457530"
+      "84782370845307042372951400466263294219970703125",
+      1.9999999999999998);
+  testParse(
+      "1.99999999999999988897769753748434595763683319091796866647610280"
+      "9618886058108235401516191287025097496717228188689453369987542469"
+      "15217629154692957627048599533736705780029296875",
+      1.9999999999999998);
+  testParse("1.99999999999999988897769753748434595763683319091796875", 2.0); //
+  testParse(
+      "1.99999999999999988897769753748434595763683319091796883352389719"
+      "0381113941891764598483808712974902503282771811310546630012457530"
+      "84782370845307042372951400466263294219970703125", //
+      2.0); //
+  testParse("4503599627370495.5", 4503599627370495.5);
+  testParse(
+      "4503599627370495.50000000000000000000000000000000000018807909613"
+      "1566001274997845955559308450986489083534003441400273004546761512"
+      "75634765625",
+      4503599627370495.5);
+  testParse(
+      "4503599627370495.74999999999999999999999999999999999981192090386"
+      "8433998725002154044440691549013510916465996558599726995453238487"
+      "24365234375",
+      4503599627370495.5);
+  testParse("4503599627370495.75", 4503599627370496.0);
+  testParse(
+      "4503599627370495.75000000000000000000000000000000000018807909613"
+      "1566001274997845955559308450986489083534003441400273004546761512"
+      "75634765625",
+      4503599627370496.0);
+  testParse("4503599627370496", 4503599627370496.0);
+  testParse(
+      "4503599627370496.00000000000000000000000000000000000037615819226"
+      "3132002549995691911118616901972978167068006882800546009093523025"
+      "5126953125",
+      4503599627370496.0);
+  testParse(
+      "4503599627370496.49999999999999999999999999999999999962384180773"
+      "6867997450004308088881383098027021832931993117199453990906476974"
+      "4873046875",
+      4503599627370496.0);
+  testParse("4503599627370496.5", 4503599627370496.0);
+  testParse(
+      "4503599627370496.50000000000000000000000000000000000037615819226"
+      "3132002549995691911118616901972978167068006882800546009093523025"
+      "5126953125",
+      4503599627370497.0);
+  testParse("9007199254740991", 9007199254740991.0);
+  testParse(
+      "9007199254740991.00000000000000000000000000000000000037615819226"
+      "3132002549995691911118616901972978167068006882800546009093523025"
+      "5126953125",
+      9007199254740991.0);
+  testParse(
+      "9007199254740991.49999999999999999999999999999999999962384180773"
+      "6867997450004308088881383098027021832931993117199453990906476974"
+      "4873046875",
+      9007199254740991.0);
+  testParse("9007199254740991.5", 9007199254740992.0);
+  testParse(
+      "9007199254740991.50000000000000000000000000000000000037615819226"
+      "3132002549995691911118616901972978167068006882800546009093523025"
+      "5126953125",
+      9007199254740992.0);
+  testParse(
+      "1797693134862315708145274237317043567980705675258449965989174768"
+      "0315726078002853876058955863276687817154045895351438246423432132"
+      "6889464182768467546703537516986049910576551282076245490090389328"
+      "9440758685084551339423045832369032229481658085593321233482747978"
+      "26204144723168738177180919299881250404026184124858368",
+      1.7976931348623157e+308);
+  testParse(
+      "1797693134862315708145274237317043567980705675258450041064343056"
+      "0785749075118623426984641994452647172104399563141377322686588394"
+      "6121172130178666127034918365540069095282013901258936156392632590"
+      "7055367751483602939820315058278058002847941584484775356682545657"
+      "44106770877499077221865536419145864291265781790932992",
+      1.7976931348623157e+308);
+  testParse(
+      "1797693134862315807937289714053034150799341327100378194286569501"
+      "7574473832160705543739215666582761354682674973879349714831499292"
+      "8620232455220458908340124972127889717295245764493583188543574449"
+      "7703035690903649098158444443687202655781915109457910629727393062"
+      "50541739356374003666875082388828428992938306508423168",
+      1.7976931348623157e+308);
+  testParse(
+      "1797693134862315807937289714053034150799341327100378269361737789"
+      "8044496829276475094664901797758720709633028641669288791094655554"
+      "7851940402630657488671505820681908902000708383676273854845817711"
+      "5317644757302700698555713669596228429148198608349364752927190741"
+      "68444365510704342711559699508093042880177904174497792",
+      double.INFINITY);
+  testParse(
+      "1797693134862315807937289714053034150799341327100378344436906077"
+      "8514519826392244645590587928934680064583382309459227867357811816"
+      "7083648350040856069002886669235928086706171002858964521148060973"
+      "2932253823701752298952982895505254202514482107240818876126988420"
+      "86346991665034681756244316627357656767417501840572416",
+      double.INFINITY);
+
+  // Edge cases of algorithm (e+-22/23).
+  testParse("1e22", 1e22);
+  testParse("1e23", 1e23);
+  testParse("1e-22", 1e-22);
+  testParse("1e-23", 1e-23);
+
+  testParseWhitespace("1", 1.0);
+  testParseWhitespace("1.0", 1.0);
+  testParseWhitespace("1e1", 10.0);
+  testParseWhitespace(".1e1", 1.0);
+  testParseWhitespace("1.e1", 10.0);
+  testParseWhitespace("1e+1", 10.0);
+  testParseWhitespace("1e-1", 0.1);
+
+  // Negative tests - things not to allow.
+
+  // Spaces inside the numeral.
+  testFail("- 1");
+  testFail("+ 1");
+  testFail("2 2");
+  testFail("1 .");
+  testFail(". 1");
+  testFail("1e 2");
+  testFail("1 e2");
+  // Invalid characters.
+  testFail("0x0");
+  testFail("0x1H");
+  testFail("12H");
+  testFail("1x2");
+  testFail("00x2");
+  testFail("0x2.2");
+  // Double exponent without value.
+  testFail(".e1");
+  testFail("e1");
+  testFail("e+1");
+  testFail("e-1");
+  testFail("-e1");
+  testFail("-e+1");
+  testFail("-e-1");
+  // Too many signs.
+  testFail("--1");
+  testFail("-+1");
+  testFail("+-1");
+  testFail("++1");
+  // Incorrect ways to write NaN/Infinity.
+  testFail("infinity");
+  testFail("INFINITY");
+  testFail("1.#INF");
+  testFail("inf");
+  testFail("nan");
+  testFail("NAN");
+  testFail("1.#IND");
+  testFail("indef");
+  testFail("qnan");
+  testFail("snan");
+}
diff --git a/tests/corelib_2/int_try_parse_test.dart b/tests/corelib_2/int_try_parse_test.dart
new file mode 100644
index 00000000000..eb1fc867fad
--- /dev/null
+++ b/tests/corelib_2/int_try_parse_test.dart
@@ -0,0 +1,129 @@
+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import "package:expect/expect.dart";
+import "dart:math" show pow, log;
+
+void main() {
+  const String oneByteWhiteSpace = "\x09\x0a\x0b\x0c\x0d\x20\xa0";
+  const String whiteSpace = "$oneByteWhiteSpace\u1680"
+      "\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a"
+      "\u2028\u2029\u202f\u205f\u3000\ufeff";
+
+  var digits = "0123456789abcdefghijklmnopqrstuvwxyz";
+  var zeros = "0" * 64;
+
+  for (int i = 0; i < whiteSpace.length; i++) {
+    var ws = whiteSpace[i];
+    Expect.equals(0, int.parse("${ws}0${ws}", radix: 2));
+  }
+
+  void testParse(int result, String radixString, int radix) {
+    var m = "$radixString/$radix->$result";
+    Expect.equals(
+        result, int.tryParse(radixString.toLowerCase(), radix: radix), m);
+    Expect.equals(
+        result, int.tryParse(radixString.toUpperCase(), radix: radix), m);
+    Expect.equals(result, int.tryParse(" $radixString", radix: radix), m);
+    Expect.equals(result, int.tryParse("$radixString ", radix: radix), m);
+    Expect.equals(result, int.tryParse(" $radixString ", radix: radix), m);
+    Expect.equals(result, int.tryParse("+$radixString", radix: radix), m);
+    Expect.equals(result, int.tryParse(" +$radixString", radix: radix), m);
+    Expect.equals(result, int.tryParse("+$radixString ", radix: radix), m);
+    Expect.equals(result, int.tryParse(" +$radixString ", radix: radix), m);
+    Expect.equals(-result, int.tryParse("-$radixString", radix: radix), m);
+    Expect.equals(-result, int.tryParse(" -$radixString", radix: radix), m);
+    Expect.equals(-result, int.tryParse("-$radixString ", radix: radix), m);
+    Expect.equals(-result, int.tryParse(" -$radixString ", radix: radix), m);
+    Expect.equals(
+        result,
+        int.tryParse("$oneByteWhiteSpace$radixString$oneByteWhiteSpace",
+            radix: radix),
+        m);
+    Expect.equals(
+        -result,
+        int.tryParse("$oneByteWhiteSpace-$radixString$oneByteWhiteSpace",
+            radix: radix),
+        m);
+    Expect.equals(result,
+        int.tryParse("$whiteSpace$radixString$whiteSpace", radix: radix), m);
+    Expect.equals(-result,
+        int.tryParse("$whiteSpace-$radixString$whiteSpace", radix: radix), m);
+
+    Expect.equals(result, int.tryParse("$zeros$radixString", radix: radix), m);
+    Expect.equals(result, int.tryParse("+$zeros$radixString", radix: radix), m);
+    Expect.equals(
+        -result, int.tryParse("-$zeros$radixString", radix: radix), m);
+  }
+
+  for (int r = 2; r <= 36; r++) {
+    for (int i = 0; i <= r * r; i++) {
+      String radixString = i.toRadixString(r);
+      testParse(i, radixString, r);
+    }
+    for (var v in [
+      0,
+      0x10000,
+      0x7FFFFFFF,
+      0x80000000,
+      0xFFFFFFFF,
+      0x100000000,
+      0x7FFFFFFFFFFFF8,
+    ]) {
+      var string = v.toRadixString(r);
+      Expect.equals(v, int.tryParse(string, radix: r));
+      if (v > 0) {
+        Expect.equals(-v, int.tryParse("-$string", radix: r));
+        if (r == 16) {
+          Expect.equals(v, int.tryParse("0x$string"));
+          Expect.equals(v, int.tryParse("0X$string"));
+        }
+      }
+    }
+  }
+
+  // Allow both upper- and lower-case letters.
+  Expect.equals(0xABCD, int.tryParse("ABCD", radix: 16));
+  Expect.equals(0xABCD, int.tryParse("abcd", radix: 16));
+  Expect.equals(15628859, int.tryParse("09azAZ", radix: 36));
+  // Big numbers (representable as both Int64 and double).
+  Expect.equals(9223372036854774784, int.tryParse("9223372036854774784"));
+  Expect.equals(-9223372036854775808, int.tryParse("-9223372036854775808"));
+  // Allow whitespace before and after the number.
+  Expect.equals(1, int.tryParse(" 1", radix: 2));
+  Expect.equals(1, int.tryParse("1 ", radix: 2));
+  Expect.equals(1, int.tryParse(" 1 ", radix: 2));
+  Expect.equals(1, int.tryParse("\n1", radix: 2));
+  Expect.equals(1, int.tryParse("1\n", radix: 2));
+  Expect.equals(1, int.tryParse("\n1\n", radix: 2));
+  Expect.equals(1, int.tryParse("+1", radix: 2));
+
+  void testFails(String source, int radix) {
+    Expect.isNull(int.tryParse(source, radix: radix));
+  }
+
+  for (int i = 2; i < 36; i++) {
+    var char = i.toRadixString(36);
+    testFails(char.toLowerCase(), i);
+    testFails(char.toUpperCase(), i);
+  }
+  testFails("", 2);
+  testFails("+ 1", 2); // No space between sign and digits.
+  testFails("- 1", 2); // No space between sign and digits.
+  testFails("0x", null);
+  for (int i = 2; i <= 33; i++) {
+    // No 0x specially allowed.
+    // At radix 34 and above, "x" is a valid digit.
+    testFails("0x10", i);
+  }
+  int digitX = 33;
+  Expect.equals(((digitX * 34) + 1) * 34, int.tryParse("0x10", radix: 34));
+  Expect.equals(((digitX * 35) + 1) * 35, int.tryParse("0x10", radix: 35));
+
+  // Radix must be in the range 2 .. 36.
+  Expect.throwsArgumentError(() => int.tryParse("0", radix: -1));
+  Expect.throwsArgumentError(() => int.tryParse("0", radix: 0));
+  Expect.throwsArgumentError(() => int.tryParse("0", radix: -1));
+  Expect.throwsArgumentError(() => int.tryParse("0", radix: 37));
+}
diff --git a/tests/corelib_2/num_try_parse_test.dart b/tests/corelib_2/num_try_parse_test.dart
new file mode 100644
index 00000000000..edf2a5bd450
--- /dev/null
+++ b/tests/corelib_2/num_try_parse_test.dart
@@ -0,0 +1,222 @@
+// Copyright (c) 2013 the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import "package:expect/expect.dart";
+
+const whiteSpace = const [
+  "",
+  "\x09",
+  "\x0a",
+  "\x0b",
+  "\x0c",
+  "\x0d",
+  "\xa0",
+  "\u1680",
+  "\u2000",
+  "\u2001",
+  "\u2002",
+  "\u2003",
+  "\u2004",
+  "\u2005",
+  "\u2006",
+  "\u2007",
+  "\u2008",
+  "\u2009",
+  "\u200a",
+  "\u2028",
+  "\u2029",
+  "\u202f",
+  "\u205f",
+  "\u3000",
+  "\uFEFF"
+];
+
+void expectNumEquals(num expect, num actual, String message) {
+  if (expect is double && expect.isNaN) {
+    Expect.isTrue(actual is double && actual.isNaN, "isNaN: $message");
+  } else {
+    Expect.identical(expect, actual, message);
+  }
+}
+
+// Test source surrounded by any combination of whitespace.
+void testParseAllWhitespace(String source, num result) {
+  for (String ws1 in whiteSpace) {
+    for (String ws2 in whiteSpace) {
+      String padded = "$ws1$source$ws2";
+      // Use Expect.identical because it also handles NaN and 0.0/-0.0.
+      // Except on dart2js: http://dartbug.com/11551
+      expectNumEquals(result, num.parse(padded), "parse '$padded'");
+      padded = "$ws1$ws2$source";
+      expectNumEquals(result, num.parse(padded), "parse '$padded'");
+      padded = "$source$ws1$ws2";
+      expectNumEquals(result, num.parse(padded), "parse '$padded'");
+    }
+  }
+}
+
+// Test source and -source surrounded by any combination of whitespace.
+void testParseWhitespace(String source, num result) {
+  assert(result >= 0);
+  testParseAllWhitespace(source, result);
+  testParseAllWhitespace("-$source", -result);
+}
+
+void testParse(String source, num result) {
+  expectNumEquals(result, num.tryParse(source), "parse '$source'");
+  expectNumEquals(result, num.tryParse(" $source"), "parse ' $source'");
+  expectNumEquals(result, num.tryParse("$source "), "parse '$source '");
+  expectNumEquals(result, num.tryParse(" $source "), "parse ' $source '");
+}
+
+// Test parsing an integer in decimal or hex format, with or without signs.
+void testInt(int value) {
+  testParse("$value", value);
+  testParse("+$value", value);
+  testParse("-$value", -value);
+  var hex = "0x${value.toRadixString(16)}";
+  var lchex = hex.toLowerCase();
+  testParse(lchex, value);
+  testParse("+$lchex", value);
+  testParse("-$lchex", -value);
+  var uchex = hex.toUpperCase();
+  testParse(uchex, value);
+  testParse("+$uchex", value);
+  testParse("-$uchex", -value);
+}
+
+// Test parsing an integer, and the integers just around it.
+void testIntAround(int value) {
+  testInt(value - 1);
+  testInt(value);
+  testInt(value + 1);
+}
+
+void testDouble(double value) {
+  testParse("$value", value);
+  testParse("+$value", value);
+  testParse("-$value", -value);
+  if (value.isFinite) {
+    String exp = value.toStringAsExponential();
+    String lcexp = exp.toLowerCase();
+    testParse(lcexp, value);
+    testParse("+$lcexp", value);
+    testParse("-$lcexp", -value);
+    String ucexp = exp.toUpperCase();
+    testParse(ucexp, value);
+    testParse("+$ucexp", value);
+    testParse("-$ucexp", -value);
+  }
+}
+
+void testFail(String source) {
+  Expect.isNull(num.tryParse(source));
+}
+
+void main() {
+  testInt(0);
+  testInt(1);
+  testInt(9);
+  testInt(10);
+  testInt(99);
+  testInt(100);
+  testIntAround(256);
+  testIntAround(0x80000000); // 2^31
+  testIntAround(0x100000000); // 2^32
+  testIntAround(0x10000000000000); // 2^52
+  testIntAround(0x1FFFFFFFFFFFFF); // 2^53 - 1
+
+  testDouble(0.0);
+  testDouble(5e-324);
+  testDouble(2.225073858507201e-308);
+  testDouble(2.2250738585072014e-308);
+  testDouble(0.49999999999999994);
+  testDouble(0.5);
+  testDouble(0.50000000000000006);
+  testDouble(0.9999999999999999);
+  testDouble(1.0);
+  testDouble(1.0000000000000002);
+  testDouble(4294967295.0);
+  testDouble(4294967296.0);
+  testDouble(4503599627370495.5);
+  testDouble(4503599627370497.0);
+  testDouble(9007199254740991.0);
+  testDouble(9007199254740992.0);
+  testDouble(1.7976931348623157e+308);
+  testDouble(double.infinity);
+  testDouble(double.nan);
+
+  // Strings that cannot occur from toString of a number.
+  testParse("000000000000", 0);
+  testParse("000000000001", 1);
+  testParse("000000000000.0000000000000", 0.0);
+  testParse("000000000001.0000000000000", 1.0);
+  testParse("0x0000000000", 0);
+  testParse("0e0", 0.0);
+  testParse("0e+0", 0.0);
+  testParse("0e-0", 0.0);
+  testParse("-0e0", -0.0);
+  testParse("-0e+0", -0.0);
+  testParse("-0e-0", -0.0);
+  testParse("1e0", 1.0);
+  testParse("1e+0", 1.0);
+  testParse("1e-0", 1.0);
+  testParse("-1e0", -1.0);
+  testParse("-1e+0", -1.0);
+  testParse("-1e-0", -1.0);
+  testParse("1.", 1.0);
+  testParse(".1", 0.1);
+  testParse("1.e1", 10.0);
+  testParse(".1e1", 1.0);
+
+  testParseWhitespace("0x1", 1);
+  testParseWhitespace("1", 1);
+  testParseWhitespace("1.0", 1.0);
+  testParseWhitespace("1e1", 10.0);
+  testParseWhitespace(".1e1", 1.0);
+  testParseWhitespace("1.e1", 10.0);
+  testParseWhitespace("1e+1", 10.0);
+  testParseWhitespace("1e-1", 0.1);
+
+  // Negative tests - things not to allow.
+
+  // Spaces inside the numeral.
+  testFail("- 1");
+  testFail("+ 1");
+  testFail("2 2");
+  testFail("0x 42");
+  testFail("1 .");
+  testFail(". 1");
+  testFail("1e 2");
+  testFail("1 e2");
+  // Invalid characters.
+  testFail("0x1H");
+  testFail("12H");
+  testFail("1x2");
+  testFail("00x2");
+  testFail("0x2.2");
+  // Empty hex number.
+  testFail("0x");
+  testFail("-0x");
+  testFail("+0x");
+  // Double exponent without value.
+  testFail(".e1");
+  testFail("e1");
+  testFail("e+1");
+  testFail("e-1");
+  testFail("-e1");
+  testFail("-e+1");
+  testFail("-e-1");
+  // Incorrect ways to write NaN/Infinity.
+  testFail("infinity");
+  testFail("INFINITY");
+  testFail("1.#INF");
+  testFail("inf");
+  testFail("nan");
+  testFail("NAN");
+  testFail("1.#IND");
+  testFail("indef");
+  testFail("qnan");
+  testFail("snan");
+}