Add/improve num const docs

This adds short summaries to all num consts.

5 files changed, 64 insertions, 65 deletions

diff --git a/src/libcore/num/f32.rs b/src/libcore/num/f32.rs
index c24eaa3eabc..0caa27f21dc 100644
--- a/src/libcore/num/f32.rs
+++ b/src/libcore/num/f32.rs
@@ -20,53 +20,53 @@ use mem;
 use num::Float;
 use num::FpCategory as Fp;
 
+/// The radix or base of the internal representation of `f32`.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const RADIX: u32 = 2;
 
+/// Number of significant digits in base 2.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const MANTISSA_DIGITS: u32 = 24;
+/// Approximate number of significant digits in base 10.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const DIGITS: u32 = 6;
 
+/// A very small number.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const EPSILON: f32 = 1.19209290e-07_f32;
 
-/// Smallest finite f32 value
+/// Smallest finite `f32` value.
 #[stable(feature = "rust1", since = "1.0.0")]
 pub const MIN: f32 = -3.40282347e+38_f32;
-/// Smallest positive, normalized f32 value
+/// Smallest positive normal `f32` value.
 #[stable(feature = "rust1", since = "1.0.0")]
 pub const MIN_POSITIVE: f32 = 1.17549435e-38_f32;
-/// Largest finite f32 value
+/// Largest finite `f32` value.
 #[stable(feature = "rust1", since = "1.0.0")]
 pub const MAX: f32 = 3.40282347e+38_f32;
 
+/// Minimum possible normal power of 2 exponent.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const MIN_EXP: i32 = -125;
+/// Maximum possible power of 2 exponent.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const MAX_EXP: i32 = 128;
 
+/// Minimum possible normal power of 10 exponent.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const MIN_10_EXP: i32 = -37;
+/// Maximum possible power of 10 exponent.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const MAX_10_EXP: i32 = 38;
 
+/// Not a Number (NaN).
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const NAN: f32 = 0.0_f32/0.0_f32;
+/// Infinity (∞).
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const INFINITY: f32 = 1.0_f32/0.0_f32;
+/// Negative infinity (-∞).
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const NEG_INFINITY: f32 = -1.0_f32/0.0_f32;
 
 /// Basic mathematical constants.
@@ -74,67 +74,67 @@ pub const NEG_INFINITY: f32 = -1.0_f32/0.0_f32;
 pub mod consts {
     // FIXME: replace with mathematical constants from cmath.
 
-    /// Archimedes' constant
+    /// Archimedes' constant (π)
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const PI: f32 = 3.14159265358979323846264338327950288_f32;
 
-    /// pi/2.0
+    /// π/2
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const FRAC_PI_2: f32 = 1.57079632679489661923132169163975144_f32;
 
-    /// pi/3.0
+    /// π/3
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const FRAC_PI_3: f32 = 1.04719755119659774615421446109316763_f32;
 
-    /// pi/4.0
+    /// π/4
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const FRAC_PI_4: f32 = 0.785398163397448309615660845819875721_f32;
 
-    /// pi/6.0
+    /// π/6
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const FRAC_PI_6: f32 = 0.52359877559829887307710723054658381_f32;
 
-    /// pi/8.0
+    /// π/8
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const FRAC_PI_8: f32 = 0.39269908169872415480783042290993786_f32;
 
-    /// 1.0/pi
+    /// 1/π
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const FRAC_1_PI: f32 = 0.318309886183790671537767526745028724_f32;
 
-    /// 2.0/pi
+    /// 2/π
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const FRAC_2_PI: f32 = 0.636619772367581343075535053490057448_f32;
 
-    /// 2.0/sqrt(pi)
+    /// 2/sqrt(π)
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const FRAC_2_SQRT_PI: f32 = 1.12837916709551257389615890312154517_f32;
 
-    /// sqrt(2.0)
+    /// sqrt(2)
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const SQRT_2: f32 = 1.41421356237309504880168872420969808_f32;
 
-    /// 1.0/sqrt(2.0)
+    /// 1/sqrt(2)
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const FRAC_1_SQRT_2: f32 = 0.707106781186547524400844362104849039_f32;
 
-    /// Euler's number
+    /// Euler's number (e)
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const E: f32 = 2.71828182845904523536028747135266250_f32;
 
-    /// log2(e)
+    /// log<sub>2</sub>(e)
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const LOG2_E: f32 = 1.44269504088896340735992468100189214_f32;
 
-    /// log10(e)
+    /// log<sub>10</sub>(e)
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const LOG10_E: f32 = 0.434294481903251827651128918916605082_f32;
 
-    /// ln(2.0)
+    /// ln(2)
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const LN_2: f32 = 0.693147180559945309417232121458176568_f32;
 
-    /// ln(10.0)
+    /// ln(10)
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const LN_10: f32 = 2.30258509299404568401799145468436421_f32;
 }
diff --git a/src/libcore/num/f64.rs b/src/libcore/num/f64.rs
index beeee809025..766e83a8953 100644
--- a/src/libcore/num/f64.rs
+++ b/src/libcore/num/f64.rs
@@ -20,53 +20,53 @@ use mem;
 use num::FpCategory as Fp;
 use num::Float;
 
+/// The radix or base of the internal representation of `f64`.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const RADIX: u32 = 2;
 
+/// Number of significant digits in base 2.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const MANTISSA_DIGITS: u32 = 53;
+/// Approximate number of significant digits in base 10.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const DIGITS: u32 = 15;
 
+/// A very small number.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const EPSILON: f64 = 2.2204460492503131e-16_f64;
 
-/// Smallest finite f64 value
+/// Smallest finite `f64` value.
 #[stable(feature = "rust1", since = "1.0.0")]
 pub const MIN: f64 = -1.7976931348623157e+308_f64;
-/// Smallest positive, normalized f64 value
+/// Smallest positive normal `f64` value.
 #[stable(feature = "rust1", since = "1.0.0")]
 pub const MIN_POSITIVE: f64 = 2.2250738585072014e-308_f64;
-/// Largest finite f64 value
+/// Largest finite `f64` value.
 #[stable(feature = "rust1", since = "1.0.0")]
 pub const MAX: f64 = 1.7976931348623157e+308_f64;
 
+/// Minimum possible normal power of 2 exponent.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const MIN_EXP: i32 = -1021;
+/// Maximum possible power of 2 exponent.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const MAX_EXP: i32 = 1024;
 
+/// Minimum possible normal power of 10 exponent.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const MIN_10_EXP: i32 = -307;
+/// Maximum possible power of 10 exponent.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const MAX_10_EXP: i32 = 308;
 
+/// Not a Number (NaN).
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const NAN: f64 = 0.0_f64/0.0_f64;
+/// Infinity (∞).
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const INFINITY: f64 = 1.0_f64/0.0_f64;
+/// Negative infinity (-∞).
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const NEG_INFINITY: f64 = -1.0_f64/0.0_f64;
 
 /// Basic mathematical constants.
@@ -74,67 +74,67 @@ pub const NEG_INFINITY: f64 = -1.0_f64/0.0_f64;
 pub mod consts {
     // FIXME: replace with mathematical constants from cmath.
 
-    /// Archimedes' constant
+    /// Archimedes' constant (π)
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const PI: f64 = 3.14159265358979323846264338327950288_f64;
 
-    /// pi/2.0
+    /// π/2
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const FRAC_PI_2: f64 = 1.57079632679489661923132169163975144_f64;
 
-    /// pi/3.0
+    /// π/3
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const FRAC_PI_3: f64 = 1.04719755119659774615421446109316763_f64;
 
-    /// pi/4.0
+    /// π/4
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const FRAC_PI_4: f64 = 0.785398163397448309615660845819875721_f64;
 
-    /// pi/6.0
+    /// π/6
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const FRAC_PI_6: f64 = 0.52359877559829887307710723054658381_f64;
 
-    /// pi/8.0
+    /// π/8
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const FRAC_PI_8: f64 = 0.39269908169872415480783042290993786_f64;
 
-    /// 1.0/pi
+    /// 1/π
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const FRAC_1_PI: f64 = 0.318309886183790671537767526745028724_f64;
 
-    /// 2.0/pi
+    /// 2/π
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const FRAC_2_PI: f64 = 0.636619772367581343075535053490057448_f64;
 
-    /// 2.0/sqrt(pi)
+    /// 2/sqrt(π)
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const FRAC_2_SQRT_PI: f64 = 1.12837916709551257389615890312154517_f64;
 
-    /// sqrt(2.0)
+    /// sqrt(2)
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const SQRT_2: f64 = 1.41421356237309504880168872420969808_f64;
 
-    /// 1.0/sqrt(2.0)
+    /// 1/sqrt(2)
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const FRAC_1_SQRT_2: f64 = 0.707106781186547524400844362104849039_f64;
 
-    /// Euler's number
+    /// Euler's number (e)
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const E: f64 = 2.71828182845904523536028747135266250_f64;
 
-    /// log2(e)
+    /// log<sub>2</sub>(e)
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const LOG2_E: f64 = 1.44269504088896340735992468100189214_f64;
 
-    /// log10(e)
+    /// log<sub>10</sub>(e)
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const LOG10_E: f64 = 0.434294481903251827651128918916605082_f64;
 
-    /// ln(2.0)
+    /// ln(2)
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const LN_2: f64 = 0.693147180559945309417232121458176568_f64;
 
-    /// ln(10.0)
+    /// ln(10)
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const LN_10: f64 = 2.30258509299404568401799145468436421_f64;
 }
diff --git a/src/libcore/num/int_macros.rs b/src/libcore/num/int_macros.rs
index bd6cfc427af..e74c30d5e5a 100644
--- a/src/libcore/num/int_macros.rs
+++ b/src/libcore/num/int_macros.rs
@@ -12,11 +12,11 @@
 
 macro_rules! int_module { ($T:ident, $bits:expr) => (
 
+/// The smallest value that can be represented by this integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const MIN: $T = $T::min_value();
+/// The largest value that can be represented by this integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const MAX: $T = $T::max_value();
 
 ) }
diff --git a/src/libcore/num/mod.rs b/src/libcore/num/mod.rs
index 883e9206dde..2d6f7afb22e 100644
--- a/src/libcore/num/mod.rs
+++ b/src/libcore/num/mod.rs
@@ -11,7 +11,6 @@
 //! Numeric traits and functions for the built-in numeric types.
 
 #![stable(feature = "rust1", since = "1.0.0")]
-#![allow(missing_docs)]
 
 use char::CharExt;
 use cmp::PartialOrd;
diff --git a/src/libcore/num/uint_macros.rs b/src/libcore/num/uint_macros.rs
index 2ab2f9548ef..cc9256ab6bf 100644
--- a/src/libcore/num/uint_macros.rs
+++ b/src/libcore/num/uint_macros.rs
@@ -12,11 +12,11 @@
 
 macro_rules! uint_module { ($T:ident, $bits:expr) => (
 
+/// The smallest value that can be represented by this integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const MIN: $T = $T::min_value();
+/// The largest value that can be represented by this integer type.
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(missing_docs)]
 pub const MAX: $T = $T::max_value();
 
 ) }