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[dart2wasm] Minor fixes for double string functions.

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Change-Id: Ia5165712ee8469699a7c9bf58b0fe86417b1b3d5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/265406
Commit-Queue: Ömer Ağacan <omersa@google.com>
Reviewed-by: Ömer Ağacan <omersa@google.com>
This commit is contained in:
Joshua Litt 2022-10-25 07:06:38 +00:00 committed by Commit Queue
parent e70dec4e82
commit bd75b2c9e1
1 changed files with 23 additions and 5 deletions
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28
sdk/lib/_internal/wasm/lib/double.dart
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@ -194,10 +194,20 @@ class _BoxedDouble implements double {
}
}
// TODO(koda): Consider optimizing all small integral values.
if (identical(0.0, this)) {
return "0.0";
if (isNaN) return "NaN";
if (this == double.infinity) return "Infinity";
if (this == -double.infinity) return "-Infinity";
if (this == 0) {
if (isNegative) {
return "-0.0";
} else {
return "0.0";
}
}
String result = _doubleToString(value);
if (this % 1.0 == 0.0 && result.indexOf('e') == -1) {
result = '$result.0';
}
// Replace the least recently inserted entry.
_cache[_cacheEvictIndex] = this;
_cache[_cacheEvictIndex + 1] = result;
@ -218,6 +228,8 @@ class _BoxedDouble implements double {
// Step 4.
if (isNaN) return "NaN";
if (this == double.infinity) return "Infinity";
if (this == -double.infinity) return "-Infinity";
// Step 5 and 6 skipped. Will be dealt with by native function.
@ -226,7 +238,9 @@ class _BoxedDouble implements double {
return x.toString();
}
return _toStringAsFixed(fractionDigits);
String result = _toStringAsFixed(fractionDigits);
if (this == 0 && isNegative) return '-$result';
return result;
}
String _toStringAsFixed(int fractionDigits) =>
@ -250,7 +264,9 @@ class _BoxedDouble implements double {
if (this == double.infinity) return "Infinity";
if (this == -double.infinity) return "-Infinity";
return _toStringAsExponential(fractionDigits);
String result = _toStringAsExponential(fractionDigits);
if (this == 0 && isNegative) return '-$result';
return result;
}
String _toStringAsExponential(int? fractionDigits) {
@ -277,7 +293,9 @@ class _BoxedDouble implements double {
if (this == double.infinity) return "Infinity";
if (this == -double.infinity) return "-Infinity";
return _toStringAsPrecision(precision);
String result = _toStringAsPrecision(precision);
if (this == 0 && isNegative) return '-$result';
return result;
}
String _toStringAsPrecision(int fractionDigits) =>