diff --git a/doc/rust.md b/doc/rust.md
index 42a010b114a..0a640648222 100644
--- a/doc/rust.md
+++ b/doc/rust.md
@@ -802,11 +802,11 @@ Use declarations support a number of convenient shortcuts:
 An example of `use` declarations:
 
 ~~~~
-use std::float::sin;
+use std::num::sin;
 use std::option::{Some, None};
 
 fn main() {
-    // Equivalent to 'info!(std::float::sin(1.0));'
+    // Equivalent to 'info!(std::num::sin(1.0));'
     info!(sin(1.0));
 
     // Equivalent to 'info!(~[std::option::Some(1.0), std::option::None]);'
diff --git a/doc/tutorial.md b/doc/tutorial.md
index c8280a99182..b282679b1a1 100644
--- a/doc/tutorial.md
+++ b/doc/tutorial.md
@@ -503,12 +503,13 @@ types.
 
 ~~~~
 # use std::float;
+# use std::num::atan;
 fn angle(vector: (float, float)) -> float {
     let pi = float::consts::pi;
     match vector {
       (0f, y) if y < 0f => 1.5 * pi,
       (0f, y) => 0.5 * pi,
-      (x, y) => float::atan(y / x)
+      (x, y) => atan(y / x)
     }
 }
 ~~~~
@@ -1728,10 +1729,9 @@ To call such a method, just prefix it with the type name and a double colon:
 
 ~~~~
 # use std::float::consts::pi;
-# use std::float::sqrt;
 struct Circle { radius: float }
 impl Circle {
-    fn new(area: float) -> Circle { Circle { radius: sqrt(area / pi) } }
+    fn new(area: float) -> Circle { Circle { radius: (area / pi).sqrt() } }
 }
 let c = Circle::new(42.5);
 ~~~~
@@ -1997,16 +1997,15 @@ implementation to use.
 
 ~~~~
 # use std::float::consts::pi;
-# use std::float::sqrt;
 trait Shape { fn new(area: float) -> Self; }
 struct Circle { radius: float }
 struct Square { length: float }
 
 impl Shape for Circle {
-    fn new(area: float) -> Circle { Circle { radius: sqrt(area / pi) } }
+    fn new(area: float) -> Circle { Circle { radius: (area / pi).sqrt() } }
 }
 impl Shape for Square {
-    fn new(area: float) -> Square { Square { length: sqrt(area) } }
+    fn new(area: float) -> Square { Square { length: (area).sqrt() } }
 }
 
 let area = 42.5;
@@ -2154,14 +2153,13 @@ Now, we can implement `Circle` on a type only if we also implement `Shape`.
 
 ~~~~
 # use std::float::consts::pi;
-# use std::float::sqrt;
 # trait Shape { fn area(&self) -> float; }
 # trait Circle : Shape { fn radius(&self) -> float; }
 # struct Point { x: float, y: float }
 # fn square(x: float) -> float { x * x }
 struct CircleStruct { center: Point, radius: float }
 impl Circle for CircleStruct {
-    fn radius(&self) -> float { sqrt(self.area() / pi) }
+    fn radius(&self) -> float { (self.area() / pi).sqrt() }
 }
 impl Shape for CircleStruct {
     fn area(&self) -> float { pi * square(self.radius) }
@@ -2190,12 +2188,11 @@ Likewise, supertrait methods may also be called on trait objects.
 
 ~~~ {.xfail-test}
 # use std::float::consts::pi;
-# use std::float::sqrt;
 # trait Shape { fn area(&self) -> float; }
 # trait Circle : Shape { fn radius(&self) -> float; }
 # struct Point { x: float, y: float }
 # struct CircleStruct { center: Point, radius: float }
-# impl Circle for CircleStruct { fn radius(&self) -> float { sqrt(self.area() / pi) } }
+# impl Circle for CircleStruct { fn radius(&self) -> float { (self.area() / pi).sqrt() } }
 # impl Shape for CircleStruct { fn area(&self) -> float { pi * square(self.radius) } }
 
 let concrete = @CircleStruct{center:Point{x:3f,y:4f},radius:5f};
diff --git a/src/libextra/arena.rs b/src/libextra/arena.rs
index f378384c564..f137b573c55 100644
--- a/src/libextra/arena.rs
+++ b/src/libextra/arena.rs
@@ -40,6 +40,7 @@
 use std::at_vec;
 use std::cast::{transmute, transmute_mut, transmute_mut_region};
 use std::cast;
+use std::num;
 use std::ptr;
 use std::sys;
 use std::uint;
@@ -175,7 +176,7 @@ impl Arena {
     fn alloc_pod_grow(&mut self, n_bytes: uint, align: uint) -> *u8 {
         // Allocate a new chunk.
         let chunk_size = at_vec::capacity(self.pod_head.data);
-        let new_min_chunk_size = uint::max(n_bytes, chunk_size);
+        let new_min_chunk_size = num::max(n_bytes, chunk_size);
         self.chunks = @mut MutCons(copy self.pod_head, self.chunks);
         self.pod_head =
             chunk(uint::next_power_of_two(new_min_chunk_size + 1u), true);
@@ -217,7 +218,7 @@ fn alloc_nonpod_grow(&mut self, n_bytes: uint, align: uint)
                          -> (*u8, *u8) {
         // Allocate a new chunk.
         let chunk_size = at_vec::capacity(self.head.data);
-        let new_min_chunk_size = uint::max(n_bytes, chunk_size);
+        let new_min_chunk_size = num::max(n_bytes, chunk_size);
         self.chunks = @mut MutCons(copy self.head, self.chunks);
         self.head =
             chunk(uint::next_power_of_two(new_min_chunk_size + 1u), false);
diff --git a/src/libextra/bitv.rs b/src/libextra/bitv.rs
index 72b6e6dc650..dc65ef36b67 100644
--- a/src/libextra/bitv.rs
+++ b/src/libextra/bitv.rs
@@ -12,6 +12,7 @@
 
 
 use std::cmp;
+use std::num;
 use std::ops;
 use std::uint;
 use std::vec;
@@ -726,7 +727,7 @@ fn insert(&mut self, value: uint) -> bool {
         }
         let nbits = self.capacity();
         if value >= nbits {
-            let newsize = uint::max(value, nbits * 2) / uint::bits + 1;
+            let newsize = num::max(value, nbits * 2) / uint::bits + 1;
             assert!(newsize > self.bitv.storage.len());
             self.bitv.storage.grow(newsize, &0);
         }
@@ -825,7 +826,7 @@ impl BitvSet {
     /// and w1/w2 are the words coming from the two vectors self, other.
     fn each_common(&self, other: &BitvSet,
                    f: &fn(uint, uint, uint) -> bool) -> bool {
-        let min = uint::min(self.bitv.storage.len(),
+        let min = num::min(self.bitv.storage.len(),
                             other.bitv.storage.len());
         self.bitv.storage.slice(0, min).iter().enumerate().advance(|(i, &w)| {
             f(i * uint::bits, w, other.bitv.storage[i])
@@ -843,7 +844,7 @@ fn each_outlier(&self, other: &BitvSet,
                     f: &fn(bool, uint, uint) -> bool) -> bool {
         let len1 = self.bitv.storage.len();
         let len2 = other.bitv.storage.len();
-        let min = uint::min(len1, len2);
+        let min = num::min(len1, len2);
 
         /* only one of these loops will execute and that's the point */
         for self.bitv.storage.slice(min, len1).iter().enumerate().advance |(i, &w)| {
diff --git a/src/libextra/deque.rs b/src/libextra/deque.rs
index 36ebf295aab..9ce5e2c7ba2 100644
--- a/src/libextra/deque.rs
+++ b/src/libextra/deque.rs
@@ -10,6 +10,7 @@
 
 //! A double-ended queue implemented as a circular buffer
 
+use std::num;
 use std::uint;
 use std::vec;
 use std::iterator::FromIterator;
@@ -51,7 +52,7 @@ pub fn new() -> Deque<T> {
     /// Create an empty Deque with space for at least `n` elements.
     pub fn with_capacity(n: uint) -> Deque<T> {
         Deque{nelts: 0, lo: 0,
-              elts: vec::from_fn(uint::max(MINIMUM_CAPACITY, n), |_| None)}
+              elts: vec::from_fn(num::max(MINIMUM_CAPACITY, n), |_| None)}
     }
 
     /// Return a reference to the first element in the deque
diff --git a/src/libextra/net/tcp.rs b/src/libextra/net/tcp.rs
index e0ed313bc02..fd80d8e0465 100644
--- a/src/libextra/net/tcp.rs
+++ b/src/libextra/net/tcp.rs
@@ -28,7 +28,7 @@
 use std::ptr;
 use std::result::{Result};
 use std::result;
-use std::uint;
+use std::num;
 use std::vec;
 
 pub mod rustrt {
@@ -880,7 +880,7 @@ fn read(&self, buf: &mut [u8], len: uint) -> uint {
           let needed = len - count;
             if nbuffered > 0 {
                 unsafe {
-                    let ncopy = uint::min(nbuffered, needed);
+                    let ncopy = num::min(nbuffered, needed);
                     let dst = ptr::mut_offset(
                         vec::raw::to_mut_ptr(buf), count);
                     let src = ptr::offset(
diff --git a/src/libextra/num/bigint.rs b/src/libextra/num/bigint.rs
index 5867b13f556..13b55a4609b 100644
--- a/src/libextra/num/bigint.rs
+++ b/src/libextra/num/bigint.rs
@@ -21,6 +21,7 @@
 
 use std::cmp::{Eq, Ord, TotalEq, TotalOrd, Ordering, Less, Equal, Greater};
 use std::int;
+use std::num;
 use std::num::{IntConvertible, Zero, One, ToStrRadix, FromStrRadix, Orderable};
 use std::str;
 use std::uint;
@@ -204,7 +205,7 @@ impl Unsigned for BigUint {}
 impl Add<BigUint, BigUint> for BigUint {
 
     fn add(&self, other: &BigUint) -> BigUint {
-        let new_len = uint::max(self.data.len(), other.data.len());
+        let new_len = num::max(self.data.len(), other.data.len());
 
         let mut carry = 0;
         let mut sum = do vec::from_fn(new_len) |i| {
@@ -224,7 +225,7 @@ fn add(&self, other: &BigUint) -> BigUint {
 impl Sub<BigUint, BigUint> for BigUint {
 
     fn sub(&self, other: &BigUint) -> BigUint {
-        let new_len = uint::max(self.data.len(), other.data.len());
+        let new_len = num::max(self.data.len(), other.data.len());
 
         let mut borrow = 0;
         let diff = do vec::from_fn(new_len) |i| {
@@ -260,7 +261,7 @@ fn mul(&self, other: &BigUint) -> BigUint {
         // = a1*b1 * base^2 +
         //   (a1*b1 + a0*b0 - (a1-b0)*(b1-a0)) * base +
         //   a0*b0
-        let half_len = uint::max(s_len, o_len) / 2;
+        let half_len = num::max(s_len, o_len) / 2;
         let (sHi, sLo) = cut_at(self,  half_len);
         let (oHi, oLo) = cut_at(other, half_len);
 
@@ -297,7 +298,7 @@ fn mul_digit(a: &BigUint, n: BigDigit) -> BigUint {
 
 
         fn cut_at(a: &BigUint, n: uint) -> (BigUint, BigUint) {
-            let mid = uint::min(a.data.len(), n);
+            let mid = num::min(a.data.len(), n);
             return (BigUint::from_slice(a.data.slice(mid, a.data.len())),
                     BigUint::from_slice(a.data.slice(0, mid)));
         }
@@ -482,7 +483,7 @@ fn is_odd(&self) -> bool { !self.is_even() }
 impl IntConvertible for BigUint {
 
     fn to_int(&self) -> int {
-        uint::min(self.to_uint(), int::max_value as uint) as int
+        num::min(self.to_uint(), int::max_value as uint) as int
     }
 
 
@@ -580,7 +581,7 @@ pub fn parse_bytes(buf: &[u8], radix: uint)
         let mut n: BigUint      = Zero::zero();
         let mut power: BigUint  = One::one();
         loop {
-            let start = uint::max(end, unit_len) - unit_len;
+            let start = num::max(end, unit_len) - unit_len;
             match uint::parse_bytes(buf.slice(start, end), radix) {
                 // FIXME(#6102): Assignment operator for BigInt causes ICE
                 // Some(d) => n += BigUint::from_uint(d) * power,
@@ -1055,9 +1056,9 @@ impl IntConvertible for BigInt {
 
     fn to_int(&self) -> int {
         match self.sign {
-            Plus  => uint::min(self.to_uint(), int::max_value as uint) as int,
+            Plus  => num::min(self.to_uint(), int::max_value as uint) as int,
             Zero  => 0,
-            Minus => uint::min((-self).to_uint(),
+            Minus => num::min((-self).to_uint(),
                                (int::max_value as uint) + 1) as int
         }
     }
diff --git a/src/libextra/par.rs b/src/libextra/par.rs
index d737698cfe2..8023fe2c5da 100644
--- a/src/libextra/par.rs
+++ b/src/libextra/par.rs
@@ -10,9 +10,9 @@
 
 
 use std::cast;
+use std::num;
 use std::ptr;
 use std::sys;
-use std::uint;
 use std::vec;
 use future_spawn = future::spawn;
 
@@ -44,7 +44,7 @@ fn map_slices<A:Copy + Send,B:Copy + Send>(
         ~[f()(0u, xs)]
     }
     else {
-        let num_tasks = uint::min(MAX_TASKS, len / MIN_GRANULARITY);
+        let num_tasks = num::min(MAX_TASKS, len / MIN_GRANULARITY);
 
         let items_per_task = len / num_tasks;
 
@@ -52,7 +52,7 @@ fn map_slices<A:Copy + Send,B:Copy + Send>(
         let mut base = 0u;
         info!("spawning tasks");
         while base < len {
-            let end = uint::min(len, base + items_per_task);
+            let end = num::min(len, base + items_per_task);
             do xs.as_imm_buf |p, _len| {
                 let f = f();
                 let base = base;
diff --git a/src/libextra/sort.rs b/src/libextra/sort.rs
index f59a2414aae..68a678869da 100644
--- a/src/libextra/sort.rs
+++ b/src/libextra/sort.rs
@@ -840,7 +840,7 @@ fn test_simple() {
 
         let expected = ~[1, 2, 3];
 
-        do quick_sort(names) |x, y| { int::le(*x, *y) };
+        do quick_sort(names) |x, y| { *x < *y };
 
         let immut_names = names;
 
diff --git a/src/libextra/stats.rs b/src/libextra/stats.rs
index 0271b393f61..5446515c1ef 100644
--- a/src/libextra/stats.rs
+++ b/src/libextra/stats.rs
@@ -12,7 +12,6 @@
 use std::cmp;
 use std::io;
 use std::num;
-use std::f64;
 use std::vec;
 
 // NB: this can probably be rewritten in terms of num::Num
@@ -178,7 +177,7 @@ fn var(self) -> f64 {
     }
 
     fn std_dev(self) -> f64 {
-        f64::sqrt(self.var())
+        self.var().sqrt()
     }
 
     fn std_dev_pct(self) -> f64 {
diff --git a/src/libextra/time.rs b/src/libextra/time.rs
index a64b2374328..d74656dcc2e 100644
--- a/src/libextra/time.rs
+++ b/src/libextra/time.rs
@@ -11,9 +11,9 @@
 #[allow(missing_doc)];
 
 
-use std::i32;
 use std::int;
 use std::io;
+use std::num;
 use std::str;
 
 static NSEC_PER_SEC: i32 = 1_000_000_000_i32;
@@ -249,7 +249,7 @@ pub fn rfc3339(&self) -> ~str {
         } else {
             let s = self.strftime("%Y-%m-%dT%H:%M:%S");
             let sign = if self.tm_gmtoff > 0_i32 { '+' } else { '-' };
-            let mut m = i32::abs(self.tm_gmtoff) / 60_i32;
+            let mut m = num::abs(self.tm_gmtoff) / 60_i32;
             let h = m / 60_i32;
             m -= h * 60_i32;
             s + fmt!("%c%02d:%02d", sign, h as int, m as int)
@@ -832,7 +832,7 @@ fn parse_type(ch: char, tm: &Tm) -> ~str {
           'Z' => copy tm.tm_zone,
           'z' => {
             let sign = if tm.tm_gmtoff > 0_i32 { '+' } else { '-' };
-            let mut m = i32::abs(tm.tm_gmtoff) / 60_i32;
+            let mut m = num::abs(tm.tm_gmtoff) / 60_i32;
             let h = m / 60_i32;
             m -= h * 60_i32;
             fmt!("%c%02d%02d", sign, h as int, m as int)
diff --git a/src/libextra/treemap.rs b/src/libextra/treemap.rs
index f2dea8b9bba..8fac055d26f 100644
--- a/src/libextra/treemap.rs
+++ b/src/libextra/treemap.rs
@@ -13,7 +13,7 @@
 //! `TotalOrd`.
 
 
-use std::uint;
+use std::num;
 use std::util::{swap, replace};
 
 // This is implemented as an AA tree, which is a simplified variation of
@@ -63,7 +63,7 @@ fn lt<K: Ord + TotalOrd, V: Ord>(a: &TreeMap<K, V>,
     let mut y = b.iter();
 
     let (a_len, b_len) = (a.len(), b.len());
-    for uint::min(a_len, b_len).times {
+    for num::min(a_len, b_len).times {
         let (key_a, value_a) = x.next().unwrap();
         let (key_b, value_b) = y.next().unwrap();
         if *key_a < *key_b { return true; }
diff --git a/src/librustc/back/rpath.rs b/src/librustc/back/rpath.rs
index 19dbb941e55..62c1f670cf9 100644
--- a/src/librustc/back/rpath.rs
+++ b/src/librustc/back/rpath.rs
@@ -14,6 +14,7 @@
 use metadata::filesearch;
 
 use std::hashmap::HashSet;
+use std::num;
 use std::os;
 use std::uint;
 use std::util;
@@ -141,7 +142,7 @@ pub fn get_relative_to(abs1: &Path, abs2: &Path) -> Path {
     assert!(len1 > 0);
     assert!(len2 > 0);
 
-    let max_common_path = uint::min(len1, len2) - 1;
+    let max_common_path = num::min(len1, len2) - 1;
     let mut start_idx = 0;
     while start_idx < max_common_path
         && split1[start_idx] == split2[start_idx] {
diff --git a/src/librustc/metadata/loader.rs b/src/librustc/metadata/loader.rs
index 9aefb8fdb55..98f7dd766a4 100644
--- a/src/librustc/metadata/loader.rs
+++ b/src/librustc/metadata/loader.rs
@@ -25,11 +25,11 @@
 
 use std::cast;
 use std::io;
+use std::num;
 use std::option;
 use std::os::consts::{macos, freebsd, linux, android, win32};
 use std::ptr;
 use std::str;
-use std::uint;
 use std::vec;
 use extra::flate;
 
@@ -213,7 +213,7 @@ fn get_metadata_section(os: os,
                 let vlen = encoder::metadata_encoding_version.len();
                 debug!("checking %u bytes of metadata-version stamp",
                        vlen);
-                let minsz = uint::min(vlen, csz);
+                let minsz = num::min(vlen, csz);
                 let mut version_ok = false;
                 do vec::raw::buf_as_slice(cvbuf, minsz) |buf0| {
                     version_ok = (buf0 ==
diff --git a/src/librustc/middle/check_match.rs b/src/librustc/middle/check_match.rs
index 02f7294ffcd..3d6f8a3615f 100644
--- a/src/librustc/middle/check_match.rs
+++ b/src/librustc/middle/check_match.rs
@@ -18,6 +18,7 @@
 use middle::moves;
 use util::ppaux::ty_to_str;
 
+use std::num;
 use std::uint;
 use std::vec;
 use extra::sort;
@@ -234,7 +235,7 @@ pub fn is_useful(cx: &MatchCheckCtxt, m: &matrix, v: &[@pat]) -> useful {
                 let max_len = do m.rev_iter().fold(0) |max_len, r| {
                   match r[0].node {
                     pat_vec(ref before, _, ref after) => {
-                      uint::max(before.len() + after.len(), max_len)
+                      num::max(before.len() + after.len(), max_len)
                     }
                     _ => max_len
                   }
diff --git a/src/librustc/middle/trans/cabi_arm.rs b/src/librustc/middle/trans/cabi_arm.rs
index 7eac2df10b6..1492f44d977 100644
--- a/src/librustc/middle/trans/cabi_arm.rs
+++ b/src/librustc/middle/trans/cabi_arm.rs
@@ -14,8 +14,8 @@
 
 use middle::trans::type_::Type;
 
+use std::num;
 use std::option::{Option, None, Some};
-use std::uint;
 
 fn align_up_to(off: uint, a: uint) -> uint {
     return (off + a - 1u) / a * a;
@@ -41,7 +41,7 @@ fn ty_align(ty: Type) -> uint {
                 1
             } else {
                 let str_tys = ty.field_types();
-                str_tys.iter().fold(1, |a, t| uint::max(a, ty_align(*t)))
+                str_tys.iter().fold(1, |a, t| num::max(a, ty_align(*t)))
             }
         }
         Array => {
diff --git a/src/librustc/middle/trans/cabi_mips.rs b/src/librustc/middle/trans/cabi_mips.rs
index c95ae994ceb..a9407092eed 100644
--- a/src/librustc/middle/trans/cabi_mips.rs
+++ b/src/librustc/middle/trans/cabi_mips.rs
@@ -10,7 +10,7 @@
 
 
 use std::libc::c_uint;
-use std::uint;
+use std::num;
 use std::vec;
 use lib::llvm::{llvm, Integer, Pointer, Float, Double, Struct, Array};
 use lib::llvm::{Attribute, StructRetAttribute};
@@ -43,7 +43,7 @@ fn ty_align(ty: Type) -> uint {
             1
           } else {
             let str_tys = ty.field_types();
-            str_tys.iter().fold(1, |a, t| uint::max(a, ty_align(*t)))
+            str_tys.iter().fold(1, |a, t| num::max(a, ty_align(*t)))
           }
         }
         Array => {
@@ -97,7 +97,7 @@ fn classify_arg_ty(ty: Type, offset: &mut uint) -> (LLVMType, Option<Attribute>)
     let size = ty_size(ty) * 8;
     let mut align = ty_align(ty);
 
-    align = uint::min(uint::max(align, 4), 8);
+    align = num::min(num::max(align, 4), 8);
     *offset = align_up_to(*offset, align);
     *offset += align_up_to(size, align * 8) / 8;
 
diff --git a/src/librustc/middle/trans/cabi_x86_64.rs b/src/librustc/middle/trans/cabi_x86_64.rs
index 8fa86ea77ab..6a0387d14ea 100644
--- a/src/librustc/middle/trans/cabi_x86_64.rs
+++ b/src/librustc/middle/trans/cabi_x86_64.rs
@@ -18,6 +18,7 @@
 
 use middle::trans::type_::Type;
 
+use std::num;
 use std::option;
 use std::option::Option;
 use std::uint;
@@ -104,7 +105,7 @@ fn ty_align(ty: Type) -> uint {
                 1
               } else {
                 let str_tys = ty.field_types();
-                str_tys.iter().fold(1, |a, t| uint::max(a, ty_align(*t)))
+                str_tys.iter().fold(1, |a, t| num::max(a, ty_align(*t)))
               }
             }
             Array => {
diff --git a/src/librustc/rustc.rs b/src/librustc/rustc.rs
index 60fc485c4db..f4014180c64 100644
--- a/src/librustc/rustc.rs
+++ b/src/librustc/rustc.rs
@@ -34,11 +34,11 @@
 use middle::lint;
 
 use std::io;
+use std::num;
 use std::os;
 use std::result;
 use std::str;
 use std::task;
-use std::uint;
 use std::vec;
 use extra::getopts::{groups, opt_present};
 use extra::getopts;
@@ -153,7 +153,7 @@ pub fn describe_warnings() {
 
     let lint_dict = lint::get_lint_dict();
     let mut max_key = 0;
-    for lint_dict.each_key |k| { max_key = uint::max(k.len(), max_key); }
+    for lint_dict.each_key |k| { max_key = num::max(k.len(), max_key); }
     fn padded(max: uint, s: &str) -> ~str {
         str::from_bytes(vec::from_elem(max - s.len(), ' ' as u8)) + s
     }
diff --git a/src/librustdoc/unindent_pass.rs b/src/librustdoc/unindent_pass.rs
index 7df6b320780..4c2464f8b34 100644
--- a/src/librustdoc/unindent_pass.rs
+++ b/src/librustdoc/unindent_pass.rs
@@ -20,6 +20,7 @@
 */
 
 
+use std::num;
 use std::uint;
 use pass::Pass;
 use text_pass;
@@ -69,7 +70,7 @@ fn unindent(s: &str) -> ~str {
                     false
                 }
             };
-            uint::min(min_indent, spaces)
+            num::min(min_indent, spaces)
         }
     };
 
diff --git a/src/libstd/hashmap.rs b/src/libstd/hashmap.rs
index 2d80dc2be15..6c93cd0dc86 100644
--- a/src/libstd/hashmap.rs
+++ b/src/libstd/hashmap.rs
@@ -19,6 +19,7 @@
 use cmp::{Eq, Equiv};
 use hash::Hash;
 use iterator::{Iterator, IteratorUtil};
+use num;
 use option::{None, Option, Some};
 use rand::RngUtil;
 use rand;
@@ -74,7 +75,7 @@ pub fn linear_map_with_capacity<K:Eq + Hash,V>(
 fn linear_map_with_capacity_and_keys<K:Eq + Hash,V>(
     k0: u64, k1: u64,
     initial_capacity: uint) -> HashMap<K, V> {
-    let cap = uint::max(INITIAL_CAPACITY, initial_capacity);
+    let cap = num::max(INITIAL_CAPACITY, initial_capacity);
     HashMap {
         k0: k0, k1: k1,
         resize_at: resize_at(cap),
diff --git a/src/libstd/io.rs b/src/libstd/io.rs
index 38826dd411b..347fa988856 100644
--- a/src/libstd/io.rs
+++ b/src/libstd/io.rs
@@ -53,6 +53,7 @@
 use libc;
 use libc::{c_int, c_long, c_void, size_t, ssize_t};
 use libc::consts::os::posix88::*;
+use num;
 use os;
 use cast;
 use path::Path;
@@ -1054,7 +1055,7 @@ pub struct BytesReader {
 
 impl Reader for BytesReader {
     fn read(&self, bytes: &mut [u8], len: uint) -> uint {
-        let count = uint::min(len, self.bytes.len() - *self.pos);
+        let count = num::min(len, self.bytes.len() - *self.pos);
 
         let view = self.bytes.slice(*self.pos, self.bytes.len());
         vec::bytes::copy_memory(bytes, view, count);
@@ -1660,7 +1661,7 @@ fn write(&self, v: &[u8]) {
         let v_len = v.len();
 
         let bytes = &mut *self.bytes;
-        let count = uint::max(bytes.len(), *self.pos + v_len);
+        let count = num::max(bytes.len(), *self.pos + v_len);
         bytes.reserve(count);
 
         unsafe {
diff --git a/src/libstd/num/f32.rs b/src/libstd/num/f32.rs
index a84c27cd918..faf9b2e2390 100644
--- a/src/libstd/num/f32.rs
+++ b/src/libstd/num/f32.rs
@@ -21,9 +21,7 @@
 
 pub use cmath::c_float_targ_consts::*;
 
-// An inner module is required to get the #[inline] attribute on the
-// functions.
-pub use self::delegated::*;
+use self::delegated::*;
 
 macro_rules! delegate(
     (
@@ -35,6 +33,8 @@ fn $name:ident(
             ) -> $rv:ty = $bound_name:path
         ),*
     ) => (
+        // An inner module is required to get the #[inline] attribute on the
+        // functions.
         mod delegated {
             use cmath::c_float_utils;
             use libc::{c_float, c_int};
@@ -116,50 +116,6 @@ fn tgamma(n: c_float) -> c_float = c_float_utils::tgamma
 
 pub static neg_infinity: f32 = -1.0_f32/0.0_f32;
 
-#[inline]
-pub fn add(x: f32, y: f32) -> f32 { return x + y; }
-
-#[inline]
-pub fn sub(x: f32, y: f32) -> f32 { return x - y; }
-
-#[inline]
-pub fn mul(x: f32, y: f32) -> f32 { return x * y; }
-
-#[inline]
-pub fn div(x: f32, y: f32) -> f32 { return x / y; }
-
-#[inline]
-pub fn rem(x: f32, y: f32) -> f32 { return x % y; }
-
-#[inline]
-pub fn lt(x: f32, y: f32) -> bool { return x < y; }
-
-#[inline]
-pub fn le(x: f32, y: f32) -> bool { return x <= y; }
-
-#[inline]
-pub fn eq(x: f32, y: f32) -> bool { return x == y; }
-
-#[inline]
-pub fn ne(x: f32, y: f32) -> bool { return x != y; }
-
-#[inline]
-pub fn ge(x: f32, y: f32) -> bool { return x >= y; }
-
-#[inline]
-pub fn gt(x: f32, y: f32) -> bool { return x > y; }
-
-#[inline]
-pub fn fmax(x: f32, y: f32) -> f32 {
-    if x >= y || y.is_NaN() { x } else { y }
-}
-
-#[inline]
-pub fn fmin(x: f32, y: f32) -> f32 {
-    if x <= y || y.is_NaN() { x } else { y }
-}
-
-
 // FIXME (#1999): replace the predicates below with llvm intrinsics or
 // calls to the libmath macros in the rust runtime for performance.
 
@@ -251,13 +207,23 @@ impl Orderable for f32 {
     /// Returns `NaN` if either of the numbers are `NaN`.
     #[inline]
     fn min(&self, other: &f32) -> f32 {
-        if self.is_NaN() || other.is_NaN() { Float::NaN() } else { fmin(*self, *other) }
+        cond!(
+            (self.is_NaN())  { *self  }
+            (other.is_NaN()) { *other }
+            (*self < *other) { *self  }
+            _                { *other }
+        )
     }
 
     /// Returns `NaN` if either of the numbers are `NaN`.
     #[inline]
     fn max(&self, other: &f32) -> f32 {
-        if self.is_NaN() || other.is_NaN() { Float::NaN() } else { fmax(*self, *other) }
+        cond!(
+            (self.is_NaN())  { *self  }
+            (other.is_NaN()) { *other }
+            (*self > *other) { *self  }
+            _                { *other }
+        )
     }
 
     /// Returns the number constrained within the range `mn <= self <= mx`.
diff --git a/src/libstd/num/f64.rs b/src/libstd/num/f64.rs
index 216963e0414..c7db60e6fd2 100644
--- a/src/libstd/num/f64.rs
+++ b/src/libstd/num/f64.rs
@@ -23,9 +23,7 @@
 pub use cmath::c_double_targ_consts::*;
 pub use cmp::{min, max};
 
-// An inner module is required to get the #[inline] attribute on the
-// functions.
-pub use self::delegated::*;
+use self::delegated::*;
 
 macro_rules! delegate(
     (
@@ -37,6 +35,8 @@ fn $name:ident(
             ) -> $rv:ty = $bound_name:path
         ),*
     ) => (
+        // An inner module is required to get the #[inline] attribute on the
+        // functions.
         mod delegated {
             use cmath::c_double_utils;
             use libc::{c_double, c_int};
@@ -142,49 +142,6 @@ fn yn(i: c_int, n: c_double) -> c_double = c_double_utils::yn
 
 pub static neg_infinity: f64 = -1.0_f64/0.0_f64;
 
-#[inline]
-pub fn add(x: f64, y: f64) -> f64 { return x + y; }
-
-#[inline]
-pub fn sub(x: f64, y: f64) -> f64 { return x - y; }
-
-#[inline]
-pub fn mul(x: f64, y: f64) -> f64 { return x * y; }
-
-#[inline]
-pub fn div(x: f64, y: f64) -> f64 { return x / y; }
-
-#[inline]
-pub fn rem(x: f64, y: f64) -> f64 { return x % y; }
-
-#[inline]
-pub fn lt(x: f64, y: f64) -> bool { return x < y; }
-
-#[inline]
-pub fn le(x: f64, y: f64) -> bool { return x <= y; }
-
-#[inline]
-pub fn eq(x: f64, y: f64) -> bool { return x == y; }
-
-#[inline]
-pub fn ne(x: f64, y: f64) -> bool { return x != y; }
-
-#[inline]
-pub fn ge(x: f64, y: f64) -> bool { return x >= y; }
-
-#[inline]
-pub fn gt(x: f64, y: f64) -> bool { return x > y; }
-
-#[inline]
-pub fn fmax(x: f64, y: f64) -> f64 {
-    if x >= y || y.is_NaN() { x } else { y }
-}
-
-#[inline]
-pub fn fmin(x: f64, y: f64) -> f64 {
-    if x <= y || y.is_NaN() { x } else { y }
-}
-
 // FIXME (#1999): add is_normal, is_subnormal, and fpclassify
 
 /* Module: consts */
@@ -273,13 +230,23 @@ impl Orderable for f64 {
     /// Returns `NaN` if either of the numbers are `NaN`.
     #[inline]
     fn min(&self, other: &f64) -> f64 {
-        if self.is_NaN() || other.is_NaN() { Float::NaN() } else { fmin(*self, *other) }
+        cond!(
+            (self.is_NaN())  { *self  }
+            (other.is_NaN()) { *other }
+            (*self < *other) { *self  }
+            _                { *other }
+        )
     }
 
     /// Returns `NaN` if either of the numbers are `NaN`.
     #[inline]
     fn max(&self, other: &f64) -> f64 {
-        if self.is_NaN() || other.is_NaN() { Float::NaN() } else { fmax(*self, *other) }
+        cond!(
+            (self.is_NaN())  { *self  }
+            (other.is_NaN()) { *other }
+            (*self > *other) { *self  }
+            _                { *other }
+        )
     }
 
     /// Returns the number constrained within the range `mn <= self <= mx`.
diff --git a/src/libstd/num/float.rs b/src/libstd/num/float.rs
index d73ff16c6f7..486d3562089 100644
--- a/src/libstd/num/float.rs
+++ b/src/libstd/num/float.rs
@@ -23,22 +23,12 @@
 #[allow(missing_doc)];
 #[allow(non_uppercase_statics)];
 
-use f64;
-use libc::c_int;
 use num::{Zero, One, strconv};
 use num::FPCategory;
 use num;
 use prelude::*;
 use to_str;
 
-pub use f64::{add, sub, mul, div, rem, lt, le, eq, ne, ge, gt};
-pub use f64::{acos, asin, atan2, cbrt, ceil, copysign, cosh, floor};
-pub use f64::{erf, erfc, exp, exp_m1, exp2, abs_sub};
-pub use f64::{mul_add, fmax, fmin, next_after, frexp, hypot, ldexp};
-pub use f64::{lgamma, ln, log_radix, ln_1p, log10, log2, ilog_radix};
-pub use f64::{modf, pow, powi, round, sinh, tanh, tgamma, trunc};
-pub use f64::{j0, j1, jn, y0, y1, yn};
-
 pub static NaN: float = 0.0/0.0;
 
 pub static infinity: float = 1.0/0.0;
@@ -342,31 +332,6 @@ pub fn pow_with_uint(base: uint, pow: uint) -> float {
     return total;
 }
 
-#[inline]
-pub fn abs(x: float) -> float {
-    f64::abs(x as f64) as float
-}
-#[inline]
-pub fn sqrt(x: float) -> float {
-    f64::sqrt(x as f64) as float
-}
-#[inline]
-pub fn atan(x: float) -> float {
-    f64::atan(x as f64) as float
-}
-#[inline]
-pub fn sin(x: float) -> float {
-    f64::sin(x as f64) as float
-}
-#[inline]
-pub fn cos(x: float) -> float {
-    f64::cos(x as f64) as float
-}
-#[inline]
-pub fn tan(x: float) -> float {
-    f64::tan(x as f64) as float
-}
-
 impl Num for float {}
 
 #[cfg(not(test))]
@@ -443,19 +408,19 @@ fn one() -> float { 1.0 }
 impl Round for float {
     /// Round half-way cases toward `neg_infinity`
     #[inline]
-    fn floor(&self) -> float { floor(*self as f64) as float }
+    fn floor(&self) -> float { (*self as f64).floor() as float }
 
     /// Round half-way cases toward `infinity`
     #[inline]
-    fn ceil(&self) -> float { ceil(*self as f64) as float }
+    fn ceil(&self) -> float { (*self as f64).ceil() as float }
 
     /// Round half-way cases away from `0.0`
     #[inline]
-    fn round(&self) -> float { round(*self as f64) as float }
+    fn round(&self) -> float { (*self as f64).round() as float }
 
     /// The integer part of the number (rounds towards `0.0`)
     #[inline]
-    fn trunc(&self) -> float { trunc(*self as f64) as float }
+    fn trunc(&self) -> float { (*self as f64).trunc() as float }
 
     ///
     /// The fractional part of the number, satisfying:
@@ -727,31 +692,30 @@ fn to_radians(&self) -> float { (*self as f64).to_radians() as float }
 impl RealExt for float {
     #[inline]
     fn lgamma(&self) -> (int, float) {
-        let mut sign = 0;
-        let result = lgamma(*self as f64, &mut sign);
-        (sign as int, result as float)
+        let (sign, value) = (*self as f64).lgamma();
+        (sign, value as float)
     }
 
     #[inline]
-    fn tgamma(&self) -> float { tgamma(*self as f64) as float }
+    fn tgamma(&self) -> float { (*self as f64).tgamma() as float }
 
     #[inline]
-    fn j0(&self) -> float { j0(*self as f64) as float }
+    fn j0(&self) -> float { (*self as f64).j0() as float }
 
     #[inline]
-    fn j1(&self) -> float { j1(*self as f64) as float }
+    fn j1(&self) -> float { (*self as f64).j1() as float }
 
     #[inline]
-    fn jn(&self, n: int) -> float { jn(n as c_int, *self as f64) as float }
+    fn jn(&self, n: int) -> float { (*self as f64).jn(n) as float }
 
     #[inline]
-    fn y0(&self) -> float { y0(*self as f64) as float }
+    fn y0(&self) -> float { (*self as f64).y0() as float }
 
     #[inline]
-    fn y1(&self) -> float { y1(*self as f64) as float }
+    fn y1(&self) -> float { (*self as f64).y1() as float }
 
     #[inline]
-    fn yn(&self, n: int) -> float { yn(n as c_int, *self as f64) as float }
+    fn yn(&self, n: int) -> float { (*self as f64).yn(n) as float }
 }
 
 #[cfg(not(test))]
@@ -792,7 +756,7 @@ fn neg(&self) -> float { -*self }
 impl Signed for float {
     /// Computes the absolute value. Returns `NaN` if the number is `NaN`.
     #[inline]
-    fn abs(&self) -> float { abs(*self) }
+    fn abs(&self) -> float { (*self as f64).abs() as float }
 
     ///
     /// The positive difference of two numbers. Returns `0.0` if the number is less than or
@@ -812,7 +776,7 @@ fn abs_sub(&self, other: &float) -> float {
     ///
     #[inline]
     fn signum(&self) -> float {
-        if self.is_NaN() { NaN } else { f64::copysign(1.0, *self as f64) as float }
+        (*self as f64).signum() as float
     }
 
     /// Returns `true` if the number is positive, including `+0.0` and `infinity`
@@ -939,13 +903,13 @@ fn ln_1p(&self) -> float {
     ///
     #[inline]
     fn mul_add(&self, a: float, b: float) -> float {
-        mul_add(*self as f64, a as f64, b as f64) as float
+        (*self as f64).mul_add(a as f64, b as f64) as float
     }
 
     /// Returns the next representable floating-point value in the direction of `other`
     #[inline]
     fn next_after(&self, other: float) -> float {
-        next_after(*self as f64, other as f64) as float
+        (*self as f64).next_after(other as f64) as float
     }
 }
 
diff --git a/src/libstd/num/int_macros.rs b/src/libstd/num/int_macros.rs
index c2eebf9a3e4..75e0bbcb71b 100644
--- a/src/libstd/num/int_macros.rs
+++ b/src/libstd/num/int_macros.rs
@@ -29,62 +29,6 @@ macro_rules! int_module (($T:ty, $bits:expr) => (mod generated {
 pub static min_value: $T = (-1 as $T) << (bits - 1);
 pub static max_value: $T = min_value - 1 as $T;
 
-/// Calculates the sum of two numbers
-#[inline]
-pub fn add(x: $T, y: $T) -> $T { x + y }
-/// Subtracts the second number from the first
-#[inline]
-pub fn sub(x: $T, y: $T) -> $T { x - y }
-/// Multiplies two numbers together
-#[inline]
-pub fn mul(x: $T, y: $T) -> $T { x * y }
-/// Divides the first argument by the second argument (using integer division)
-/// Divides the first argument by the second argument (using integer division)
-#[inline]
-pub fn div(x: $T, y: $T) -> $T { x / y }
-
-///
-/// Returns the remainder of y / x.
-///
-/// # Examples
-/// ~~~
-/// assert!(int::rem(5 / 2) == 1);
-/// ~~~
-///
-/// When faced with negative numbers, the result copies the sign of the
-/// dividend.
-///
-/// ~~~
-/// assert!(int::rem(2 / -3) ==  2);
-/// ~~~
-///
-/// ~~~
-/// assert!(int::rem(-2 / 3) ==  -2);
-/// ~~~
-///
-///
-#[inline]
-pub fn rem(x: $T, y: $T) -> $T { x % y }
-
-/// Returns true iff `x < y`
-#[inline]
-pub fn lt(x: $T, y: $T) -> bool { x < y }
-/// Returns true iff `x <= y`
-#[inline]
-pub fn le(x: $T, y: $T) -> bool { x <= y }
-/// Returns true iff `x == y`
-#[inline]
-pub fn eq(x: $T, y: $T) -> bool { x == y }
-/// Returns true iff `x != y`
-#[inline]
-pub fn ne(x: $T, y: $T) -> bool { x != y }
-/// Returns true iff `x >= y`
-#[inline]
-pub fn ge(x: $T, y: $T) -> bool { x >= y }
-/// Returns true iff `x > y`
-#[inline]
-pub fn gt(x: $T, y: $T) -> bool { x > y }
-
 ///
 /// Iterate over the range [`lo`..`hi`)
 ///
@@ -137,16 +81,6 @@ pub fn range_rev(hi: $T, lo: $T, it: &fn($T) -> bool) -> bool {
     range_step(hi, lo, -1 as $T, it)
 }
 
-/// Computes the bitwise complement
-#[inline]
-pub fn compl(i: $T) -> $T {
-    -1 as $T ^ i
-}
-
-/// Computes the absolute value
-#[inline]
-pub fn abs(i: $T) -> $T { i.abs() }
-
 impl Num for $T {}
 
 #[cfg(not(test))]
diff --git a/src/libstd/num/num.rs b/src/libstd/num/num.rs
index b856c3c65ea..4468b51c261 100644
--- a/src/libstd/num/num.rs
+++ b/src/libstd/num/num.rs
@@ -46,6 +46,9 @@ pub trait Orderable: Ord {
     fn clamp(&self, mn: &Self, mx: &Self) -> Self;
 }
 
+#[inline(always)] pub fn min<T: Orderable>(a: T, b: T) -> T { a.min(&b) }
+#[inline(always)] pub fn max<T: Orderable>(a: T, b: T) -> T { a.max(&b) }
+
 pub trait Zero {
     fn zero() -> Self;      // FIXME (#5527): This should be an associated constant
     fn is_zero(&self) -> bool;
@@ -65,12 +68,10 @@ pub trait Signed: Num
     fn is_negative(&self) -> bool;
 }
 
-pub trait Unsigned: Num {}
+#[inline(always)] pub fn abs<T: Signed>(value: T) -> T { value.abs() }
+#[inline(always)] pub fn signum<T: Signed>(value: T) -> T { value.signum() }
 
-// This should be moved into the default implementation for Signed::abs
-pub fn abs<T:Ord + Zero + Neg<T>>(v: T) -> T {
-    if v < Zero::zero() { v.neg() } else { v }
-}
+pub trait Unsigned: Num {}
 
 pub trait Integer: Num
                  + Orderable
@@ -113,6 +114,8 @@ pub trait Algebraic {
     fn hypot(&self, other: &Self) -> Self;
 }
 
+#[inline(always)] pub fn sqrt<T: Algebraic>(value: T) -> T { value.sqrt() }
+
 pub trait Trigonometric {
     fn sin(&self) -> Self;
     fn cos(&self) -> Self;
@@ -124,6 +127,16 @@ pub trait Trigonometric {
     fn sin_cos(&self) -> (Self, Self);
 }
 
+#[inline(always)] pub fn sin<T: Trigonometric>(value: T) -> T { value.sin() }
+#[inline(always)] pub fn cos<T: Trigonometric>(value: T) -> T { value.cos() }
+#[inline(always)] pub fn tan<T: Trigonometric>(value: T) -> T { value.tan() }
+
+#[inline(always)] pub fn asin<T: Trigonometric>(value: T) -> T { value.asin() }
+#[inline(always)] pub fn acos<T: Trigonometric>(value: T) -> T { value.acos() }
+#[inline(always)] pub fn atan<T: Trigonometric>(value: T) -> T { value.atan() }
+
+#[inline(always)] pub fn atan2<T: Trigonometric>(x: T, y: T) -> T { x.atan2(&y) }
+
 pub trait Exponential {
     fn exp(&self) -> Self;
     fn exp2(&self) -> Self;
@@ -133,6 +146,14 @@ pub trait Exponential {
     fn log10(&self) -> Self;
 }
 
+#[inline(always)] pub fn exp<T: Exponential>(value: T) -> T { value.exp() }
+#[inline(always)] pub fn exp2<T: Exponential>(value: T) -> T { value.exp2() }
+
+#[inline(always)] pub fn ln<T: Exponential>(value: T) -> T { value.ln() }
+#[inline(always)] pub fn log<T: Exponential>(value: T, base: T) -> T { value.log(&base) }
+#[inline(always)] pub fn log2<T: Exponential>(value: T) -> T { value.log2() }
+#[inline(always)] pub fn log10<T: Exponential>(value: T) -> T { value.log10() }
+
 pub trait Hyperbolic: Exponential {
     fn sinh(&self) -> Self;
     fn cosh(&self) -> Self;
@@ -142,6 +163,14 @@ pub trait Hyperbolic: Exponential {
     fn atanh(&self) -> Self;
 }
 
+#[inline(always)] pub fn sinh<T: Hyperbolic>(value: T) -> T { value.sinh() }
+#[inline(always)] pub fn cosh<T: Hyperbolic>(value: T) -> T { value.cosh() }
+#[inline(always)] pub fn tanh<T: Hyperbolic>(value: T) -> T { value.tanh() }
+
+#[inline(always)] pub fn asinh<T: Hyperbolic>(value: T) -> T { value.asinh() }
+#[inline(always)] pub fn acosh<T: Hyperbolic>(value: T) -> T { value.acosh() }
+#[inline(always)] pub fn atanh<T: Hyperbolic>(value: T) -> T { value.atanh() }
+
 ///
 /// Defines constants and methods common to real numbers
 ///
diff --git a/src/libstd/num/uint_macros.rs b/src/libstd/num/uint_macros.rs
index d185b2a05a8..de1b997b14b 100644
--- a/src/libstd/num/uint_macros.rs
+++ b/src/libstd/num/uint_macros.rs
@@ -30,42 +30,6 @@ macro_rules! uint_module (($T:ty, $T_SIGNED:ty, $bits:expr) => (mod generated {
 pub static min_value: $T = 0 as $T;
 pub static max_value: $T = 0 as $T - 1 as $T;
 
-/// Calculates the sum of two numbers
-#[inline]
-pub fn add(x: $T, y: $T) -> $T { x + y }
-/// Subtracts the second number from the first
-#[inline]
-pub fn sub(x: $T, y: $T) -> $T { x - y }
-/// Multiplies two numbers together
-#[inline]
-pub fn mul(x: $T, y: $T) -> $T { x * y }
-/// Divides the first argument by the second argument (using integer division)
-#[inline]
-pub fn div(x: $T, y: $T) -> $T { x / y }
-/// Calculates the integer remainder when x is divided by y (equivalent to the
-/// '%' operator)
-#[inline]
-pub fn rem(x: $T, y: $T) -> $T { x % y }
-
-/// Returns true iff `x < y`
-#[inline]
-pub fn lt(x: $T, y: $T) -> bool { x < y }
-/// Returns true iff `x <= y`
-#[inline]
-pub fn le(x: $T, y: $T) -> bool { x <= y }
-/// Returns true iff `x == y`
-#[inline]
-pub fn eq(x: $T, y: $T) -> bool { x == y }
-/// Returns true iff `x != y`
-#[inline]
-pub fn ne(x: $T, y: $T) -> bool { x != y }
-/// Returns true iff `x >= y`
-#[inline]
-pub fn ge(x: $T, y: $T) -> bool { x >= y }
-/// Returns true iff `x > y`
-#[inline]
-pub fn gt(x: $T, y: $T) -> bool { x > y }
-
 #[inline]
 /**
  * Iterate through a range with a given step value.
@@ -114,12 +78,6 @@ pub fn range_rev(hi: $T, lo: $T, it: &fn($T) -> bool) -> bool {
     range_step(hi, lo, -1 as $T_SIGNED, it)
 }
 
-/// Computes the bitwise complement
-#[inline]
-pub fn compl(i: $T) -> $T {
-    max_value ^ i
-}
-
 impl Num for $T {}
 
 #[cfg(not(test))]
diff --git a/src/libstd/rand.rs b/src/libstd/rand.rs
index 5054763d742..02c8694bf76 100644
--- a/src/libstd/rand.rs
+++ b/src/libstd/rand.rs
@@ -46,6 +46,7 @@ fn main () {
 use int;
 use iterator::IteratorUtil;
 use local_data;
+use num;
 use prelude::*;
 use str;
 use sys;
@@ -463,7 +464,7 @@ fn gen<T: Rand>(&mut self) -> T {
      */
     fn gen_int_range(&mut self, start: int, end: int) -> int {
         assert!(start < end);
-        start + int::abs(self.gen::<int>() % (end - start))
+        start + num::abs(self.gen::<int>() % (end - start))
     }
 
     /**
diff --git a/src/libstd/rand/distributions.rs b/src/libstd/rand/distributions.rs
index e8dad2fc5e8..4d983b94954 100644
--- a/src/libstd/rand/distributions.rs
+++ b/src/libstd/rand/distributions.rs
@@ -20,7 +20,7 @@
 // Generating Random Variables"], but more robust. If one wanted, one
 // could implement VIZIGNOR the ZIGNOR paper for more speed.
 
-use f64;
+use num;
 use rand::{Rng,Rand};
 
 mod ziggurat_tables;
@@ -39,7 +39,7 @@ fn ziggurat<R:Rng>(rng: &mut R,
         let i: uint = rng.gen::<uint>() & 0xff;
         let x = u * X[i];
 
-        let test_x = if center_u {f64::abs(x)} else {x};
+        let test_x = if center_u {num::abs(x)} else {x};
 
         // algebraically equivalent to |u| < X[i+1]/X[i] (or u < X[i+1]/X[i])
         if test_x < X[i + 1] {
@@ -79,7 +79,7 @@ impl Rand for StandardNormal {
     fn rand<R:Rng>(rng: &mut R) -> StandardNormal {
         #[inline]
         fn pdf(x: f64) -> f64 {
-            f64::exp((-x*x/2.0) as f64) as f64
+            ((-x*x/2.0) as f64).exp()
         }
         #[inline]
         fn zero_case<R:Rng>(rng: &mut R, u: f64) -> f64 {
@@ -89,15 +89,16 @@ fn zero_case<R:Rng>(rng: &mut R, u: f64) -> f64 {
             // do-while, so the condition should be true on the first
             // run, they get overwritten anyway (0 < 1, so these are
             // good).
-            let mut x = 1.0;
-            let mut y = 0.0;
+            let mut x = 1.0f64;
+            let mut y = 0.0f64;
 
             // XXX infinities?
-            while -2.0*y < x * x {
-                x = f64::ln(rng.gen()) / ziggurat_tables::ZIG_NORM_R;
-                y = f64::ln(rng.gen());
+            while -2.0 * y < x * x {
+                x = rng.gen::<f64>().ln() / ziggurat_tables::ZIG_NORM_R;
+                y = rng.gen::<f64>().ln();
             }
-            if u < 0.0 {x-ziggurat_tables::ZIG_NORM_R} else {ziggurat_tables::ZIG_NORM_R-x}
+
+            if u < 0.0 { x - ziggurat_tables::ZIG_NORM_R } else { ziggurat_tables::ZIG_NORM_R - x }
         }
 
         StandardNormal(ziggurat(
@@ -128,17 +129,17 @@ fn zero_case<R:Rng>(rng: &mut R, u: f64) -> f64 {
 /// ~~~
 pub struct Exp1(f64);
 
-// This could be done via `-f64::ln(rng.gen::<f64>())` but that is slower.
+// This could be done via `-rng.gen::<f64>().ln()` but that is slower.
 impl Rand for Exp1 {
     #[inline]
     fn rand<R:Rng>(rng: &mut R) -> Exp1 {
         #[inline]
         fn pdf(x: f64) -> f64 {
-            f64::exp(-x)
+            (-x).exp()
         }
         #[inline]
         fn zero_case<R:Rng>(rng: &mut R, _u: f64) -> f64 {
-            ziggurat_tables::ZIG_EXP_R - f64::ln(rng.gen())
+            ziggurat_tables::ZIG_EXP_R - rng.gen::<f64>().ln()
         }
 
         Exp1(ziggurat(rng, false,
diff --git a/src/libstd/unstable/extfmt.rs b/src/libstd/unstable/extfmt.rs
index b1df5175c92..64ac76756d5 100644
--- a/src/libstd/unstable/extfmt.rs
+++ b/src/libstd/unstable/extfmt.rs
@@ -477,7 +477,7 @@ pub mod rt {
     use float;
     use str;
     use sys;
-    use int;
+    use num;
     use uint;
     use vec;
     use option::{Some, None, Option};
@@ -503,7 +503,7 @@ pub struct Conv {
     pub fn conv_int(cv: Conv, i: int, buf: &mut ~str) {
         let radix = 10;
         let prec = get_int_precision(cv);
-        let s : ~str = uint_to_str_prec(int::abs(i) as uint, radix, prec);
+        let s : ~str = uint_to_str_prec(num::abs(i) as uint, radix, prec);
 
         let head = if i >= 0 {
             if have_flag(cv.flags, flag_sign_always) {
diff --git a/src/libstd/vec.rs b/src/libstd/vec.rs
index 191c2a4a0b2..309973def80 100644
--- a/src/libstd/vec.rs
+++ b/src/libstd/vec.rs
@@ -1964,7 +1964,7 @@ pub unsafe fn copy_memory<T>(dst: &mut [T], src: &[T],
 /// Operations on `[u8]`
 pub mod bytes {
     use libc;
-    use uint;
+    use num;
     use vec::raw;
     use vec;
     use ptr;
@@ -1988,7 +1988,7 @@ fn set_memory(self, value: u8) {
     pub fn memcmp(a: &~[u8], b: &~[u8]) -> int {
         let a_len = a.len();
         let b_len = b.len();
-        let n = uint::min(a_len, b_len) as libc::size_t;
+        let n = num::min(a_len, b_len) as libc::size_t;
         let r = unsafe {
             libc::memcmp(raw::to_ptr(*a) as *libc::c_void,
                          raw::to_ptr(*b) as *libc::c_void, n) as int
diff --git a/src/libsyntax/ast_util.rs b/src/libsyntax/ast_util.rs
index 565f181ab85..78be8e6f180 100644
--- a/src/libsyntax/ast_util.rs
+++ b/src/libsyntax/ast_util.rs
@@ -18,6 +18,7 @@
 
 use std::hashmap::HashMap;
 use std::int;
+use std::num;
 use std::option;
 use std::cast;
 use std::local_data;
@@ -376,8 +377,8 @@ pub fn empty(&self) -> bool {
     }
 
     pub fn add(&mut self, id: node_id) {
-        self.min = int::min(self.min, id);
-        self.max = int::max(self.max, id + 1);
+        self.min = num::min(self.min, id);
+        self.max = num::max(self.max, id + 1);
     }
 }
 
diff --git a/src/test/bench/graph500-bfs.rs b/src/test/bench/graph500-bfs.rs
index 47de9334be1..dbb8da1ebd7 100644
--- a/src/test/bench/graph500-bfs.rs
+++ b/src/test/bench/graph500-bfs.rs
@@ -22,7 +22,7 @@
 use extra::deque::Deque;
 use extra::par;
 use std::hashmap::HashSet;
-use std::int::abs;
+use std::num::abs;
 use std::io;
 use std::os;
 use std::rand::RngUtil;
diff --git a/src/test/bench/noise.rs b/src/test/bench/noise.rs
index b65a6429f2c..a8742b3073f 100644
--- a/src/test/bench/noise.rs
+++ b/src/test/bench/noise.rs
@@ -1,6 +1,5 @@
 // Perlin noise benchmark from https://gist.github.com/1170424
 
-use std::f32;
 use std::float;
 use std::int;
 use std::rand::{Rng, RngUtil};
@@ -20,8 +19,8 @@ fn smooth(v: f32) -> f32 { v * v * (3.0 - 2.0 * v) }
 fn random_gradient<R:Rng>(r: &mut R) -> Vec2 {
     let v = 2.0 * float::consts::pi * r.gen();
     Vec2 {
-        x: float::cos(v) as f32,
-        y: float::sin(v) as f32,
+        x: v.cos() as f32,
+        y: v.sin() as f32,
     }
 }
 
@@ -66,8 +65,8 @@ pub fn get_gradients(&self,
                          origins: &mut [Vec2, ..4],
                          x: f32,
                          y: f32) {
-        let x0f = f32::floor(x);
-        let y0f = f32::floor(y);
+        let x0f = x.floor();
+        let y0f = y.floor();
         let x0 = x0f as int;
         let y0 = y0f as int;
         let x1 = x0 + 1;
diff --git a/src/test/bench/shootout-nbody.rs b/src/test/bench/shootout-nbody.rs
index 7940b5a13c1..a56d1f44fa2 100644
--- a/src/test/bench/shootout-nbody.rs
+++ b/src/test/bench/shootout-nbody.rs
@@ -1,4 +1,3 @@
-use std::f64;
 use std::from_str::FromStr;
 use std::os;
 use std::uint::range;
@@ -90,7 +89,7 @@ fn advance(bodies: &mut [Planet, ..N_BODIES], dt: f64, steps: i32) {
                 d[2] = bodies[i].x[2] - bodies[j].x[2];
 
                 let d2 = d[0]*d[0] + d[1]*d[1] + d[2]*d[2];
-                let mag = dt / (d2 * f64::sqrt(d2));
+                let mag = dt / (d2 * d2.sqrt());
 
                 let a_mass = bodies[i].mass;
                 let b_mass = bodies[j].mass;
@@ -124,7 +123,7 @@ fn energy(bodies: &[Planet, ..N_BODIES]) -> f64 {
             for range(0, 3) |k| {
                 d[k] = bodies[i].x[k] - bodies[j].x[k];
             }
-            let dist = f64::sqrt(d[0]*d[0] + d[1]*d[1] + d[2]*d[2]);
+            let dist = (d[0]*d[0] + d[1]*d[1] + d[2]*d[2]).sqrt();
             e -= bodies[i].mass * bodies[j].mass / dist;
         }
     }
diff --git a/src/test/bench/shootout-spectralnorm.rs b/src/test/bench/shootout-spectralnorm.rs
index 35a37e55332..3e3df53eaad 100644
--- a/src/test/bench/shootout-spectralnorm.rs
+++ b/src/test/bench/shootout-spectralnorm.rs
@@ -8,7 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use std::f64;
 use std::from_str::FromStr;
 use std::os;
 use std::vec;
@@ -62,5 +61,5 @@ fn main() {
         mult_AtAv(v, u, tmp);
     }
 
-    println(fmt!("%.9f", f64::sqrt(dot(u,v) / dot(v,v)) as float));
+    println(fmt!("%.9f", (dot(u,v) / dot(v,v)).sqrt() as float));
 }
diff --git a/src/test/run-pass/class-impl-parameterized-trait.rs b/src/test/run-pass/class-impl-parameterized-trait.rs
index 655a9d4a0c0..31a30068978 100644
--- a/src/test/run-pass/class-impl-parameterized-trait.rs
+++ b/src/test/run-pass/class-impl-parameterized-trait.rs
@@ -58,7 +58,7 @@ fn [](&&k:int) -> bool { k <= self.meows }
   fn find(&&k:int) -> Option<bool> { Some(self.get(k)) }
   fn remove(&&k:int) -> Option<bool> { self.meows -= k; Some(true) }
   fn each(f: &fn(&&int, &&bool) -> bool) {
-    let mut n = int::abs(self.meows);
+    let mut n = num::abs(self.meows);
     while n > 0 {
         if !f(n, true) { break; }
         n -= 1;
diff --git a/src/test/run-pass/core-export-f64-sqrt.rs b/src/test/run-pass/core-export-f64-sqrt.rs
deleted file mode 100644
index 3a683bc7cb9..00000000000
--- a/src/test/run-pass/core-export-f64-sqrt.rs
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// Regression test that f64 exports things properly
-
-use std::f64;
-use std::float;
-
-pub fn main() {
-
-    let digits: uint = 10 as uint;
-
-    println(float::to_str_digits(f64::sqrt(42.0f64) as float, digits));
-}
diff --git a/src/test/run-pass/trait-inheritance-self-in-supertype.rs b/src/test/run-pass/trait-inheritance-self-in-supertype.rs
index f28f8cadfd9..474e0cfe1db 100644
--- a/src/test/run-pass/trait-inheritance-self-in-supertype.rs
+++ b/src/test/run-pass/trait-inheritance-self-in-supertype.rs
@@ -1,7 +1,6 @@
 // Test for issue #4183: use of Self in supertraits.
 
-use std::f32;
-use std::f64;
+use std::num;
 
 pub static FUZZY_EPSILON: float = 0.1;
 
@@ -20,7 +19,7 @@ fn fuzzy_eq(&self, other: &f32) -> bool {
     }
 
     fn fuzzy_eq_eps(&self, other: &f32, epsilon: &f32) -> bool {
-        f32::abs(*self - *other) < *epsilon
+        num::abs(*self - *other) < *epsilon
     }
 }
 
@@ -34,7 +33,7 @@ fn fuzzy_eq(&self, other: &f64) -> bool {
     }
 
     fn fuzzy_eq_eps(&self, other: &f64, epsilon: &f64) -> bool {
-        f64::abs(*self - *other) < *epsilon
+        num::abs(*self - *other) < *epsilon
     }
 }
 
diff --git a/src/test/run-pass/utf8_idents.rs b/src/test/run-pass/utf8_idents.rs
index 2e1bec53cee..3bc29ea13e3 100644
--- a/src/test/run-pass/utf8_idents.rs
+++ b/src/test/run-pass/utf8_idents.rs
@@ -8,13 +8,13 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use std::float;
+use std::num;
 
 pub fn main() {
     let ε = 0.00001;
     let Π = 3.14;
     let लंच = Π * Π + 1.54;
-    assert!(float::abs((लंच - 1.54) - (Π * Π)) < ε);
+    assert!(num::abs((लंच - 1.54) - (Π * Π)) < ε);
     assert_eq!(საჭმელად_გემრიელი_სადილი(), 0);
 }