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-rw-r--r--src/libcore/num/f32.rs8
-rw-r--r--src/libcore/num/f64.rs8
-rw-r--r--src/libcore/ops/range.rs12
-rw-r--r--src/libstd/f32.rs96
-rw-r--r--src/libstd/f64.rs60
5 files changed, 34 insertions, 150 deletions
diff --git a/src/libcore/num/f32.rs b/src/libcore/num/f32.rs
index 4ab82add32b..6be108f280e 100644
--- a/src/libcore/num/f32.rs
+++ b/src/libcore/num/f32.rs
@@ -394,9 +394,7 @@ impl f32 {
     /// Converts radians to degrees.
     ///
     /// ```
-    /// use std::f32::consts;
-    ///
-    /// let angle = consts::PI;
+    /// let angle = std::f32::consts::PI;
     ///
     /// let abs_difference = (angle.to_degrees() - 180.0).abs();
     ///
@@ -413,11 +411,9 @@ impl f32 {
     /// Converts degrees to radians.
     ///
     /// ```
-    /// use std::f32::consts;
-    ///
     /// let angle = 180.0f32;
     ///
-    /// let abs_difference = (angle.to_radians() - consts::PI).abs();
+    /// let abs_difference = (angle.to_radians() - std::f32::consts::PI).abs();
     ///
     /// assert!(abs_difference <= f32::EPSILON);
     /// ```
diff --git a/src/libcore/num/f64.rs b/src/libcore/num/f64.rs
index 20818a9b750..da22ba8d3c9 100644
--- a/src/libcore/num/f64.rs
+++ b/src/libcore/num/f64.rs
@@ -407,9 +407,7 @@ impl f64 {
     /// Converts radians to degrees.
     ///
     /// ```
-    /// use std::f64::consts;
-    ///
-    /// let angle = consts::PI;
+    /// let angle = std::f64::consts::PI;
     ///
     /// let abs_difference = (angle.to_degrees() - 180.0).abs();
     ///
@@ -427,11 +425,9 @@ impl f64 {
     /// Converts degrees to radians.
     ///
     /// ```
-    /// use std::f64::consts;
-    ///
     /// let angle = 180.0_f64;
     ///
-    /// let abs_difference = (angle.to_radians() - consts::PI).abs();
+    /// let abs_difference = (angle.to_radians() - std::f64::consts::PI).abs();
     ///
     /// assert!(abs_difference < 1e-10);
     /// ```
diff --git a/src/libcore/ops/range.rs b/src/libcore/ops/range.rs
index 946a765e18f..d4e6048579a 100644
--- a/src/libcore/ops/range.rs
+++ b/src/libcore/ops/range.rs
@@ -98,8 +98,6 @@ impl<Idx: PartialOrd<Idx>> Range<Idx> {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// assert!(!(3..5).contains(&2));
     /// assert!( (3..5).contains(&3));
     /// assert!( (3..5).contains(&4));
@@ -198,8 +196,6 @@ impl<Idx: PartialOrd<Idx>> RangeFrom<Idx> {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// assert!(!(3..).contains(&2));
     /// assert!( (3..).contains(&3));
     /// assert!( (3..).contains(&1_000_000_000));
@@ -282,8 +278,6 @@ impl<Idx: PartialOrd<Idx>> RangeTo<Idx> {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// assert!( (..5).contains(&-1_000_000_000));
     /// assert!( (..5).contains(&4));
     /// assert!(!(..5).contains(&5));
@@ -453,8 +447,6 @@ impl<Idx: PartialOrd<Idx>> RangeInclusive<Idx> {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// assert!(!(3..=5).contains(&2));
     /// assert!( (3..=5).contains(&3));
     /// assert!( (3..=5).contains(&4));
@@ -581,8 +573,6 @@ impl<Idx: PartialOrd<Idx>> RangeToInclusive<Idx> {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// assert!( (..=5).contains(&-1_000_000_000));
     /// assert!( (..=5).contains(&5));
     /// assert!(!(..=5).contains(&6));
@@ -721,8 +711,6 @@ pub trait RangeBounds<T: ?Sized> {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// assert!( (3..5).contains(&4));
     /// assert!(!(3..5).contains(&2));
     ///
diff --git a/src/libstd/f32.rs b/src/libstd/f32.rs
index ac8f305ae91..65273275a40 100644
--- a/src/libstd/f32.rs
+++ b/src/libstd/f32.rs
@@ -112,8 +112,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let x = 3.6_f32;
     /// let y = -3.6_f32;
     /// let abs_difference_x = (x.fract() - 0.6).abs();
@@ -135,8 +133,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let x = 3.5_f32;
     /// let y = -3.5_f32;
     ///
@@ -164,8 +160,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let f = 3.5_f32;
     ///
     /// assert_eq!(f.signum(), 1.0);
@@ -190,8 +184,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let f = 3.5_f32;
     ///
     /// assert_eq!(f.copysign(0.42), 3.5_f32);
@@ -217,8 +209,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let m = 10.0_f32;
     /// let x = 4.0_f32;
     /// let b = 60.0_f32;
@@ -301,8 +291,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let x = 2.0_f32;
     /// let abs_difference = (x.powi(2) - (x * x)).abs();
     ///
@@ -320,8 +308,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let x = 2.0_f32;
     /// let abs_difference = (x.powf(2.0) - (x * x)).abs();
     ///
@@ -341,8 +327,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let positive = 4.0_f32;
     /// let negative = -4.0_f32;
     ///
@@ -363,8 +347,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let one = 1.0f32;
     /// // e^1
     /// let e = one.exp();
@@ -386,8 +368,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let f = 2.0f32;
     ///
     /// // 2^2 - 4 == 0
@@ -407,8 +387,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let one = 1.0f32;
     /// // e^1
     /// let e = one.exp();
@@ -434,8 +412,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let five = 5.0f32;
     ///
     /// // log5(5) - 1 == 0
@@ -455,8 +431,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let two = 2.0f32;
     ///
     /// // log2(2) - 1 == 0
@@ -479,8 +453,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let ten = 10.0f32;
     ///
     /// // log10(10) - 1 == 0
@@ -503,8 +475,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let x = 3.0f32;
     /// let y = -3.0f32;
     ///
@@ -536,8 +506,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let x = 8.0f32;
     ///
     /// // x^(1/3) - 2 == 0
@@ -558,8 +526,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let x = 2.0f32;
     /// let y = 3.0f32;
     ///
@@ -580,9 +546,7 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
-    /// let x = f32::consts::FRAC_PI_2;
+    /// let x = std::f32::consts::FRAC_PI_2;
     ///
     /// let abs_difference = (x.sin() - 1.0).abs();
     ///
@@ -600,9 +564,7 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
-    /// let x = 2.0 * f32::consts::PI;
+    /// let x = 2.0 * std::f32::consts::PI;
     ///
     /// let abs_difference = (x.cos() - 1.0).abs();
     ///
@@ -620,9 +582,7 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
-    /// let x = f32::consts::FRAC_PI_4;
+    /// let x = std::f32::consts::FRAC_PI_4;
     /// let abs_difference = (x.tan() - 1.0).abs();
     ///
     /// assert!(abs_difference <= f32::EPSILON);
@@ -641,12 +601,10 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
-    /// let f = f32::consts::FRAC_PI_2;
+    /// let f = std::f32::consts::FRAC_PI_2;
     ///
     /// // asin(sin(pi/2))
-    /// let abs_difference = (f.sin().asin() - f32::consts::FRAC_PI_2).abs();
+    /// let abs_difference = (f.sin().asin() - std::f32::consts::FRAC_PI_2).abs();
     ///
     /// assert!(abs_difference <= f32::EPSILON);
     /// ```
@@ -664,12 +622,10 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
-    /// let f = f32::consts::FRAC_PI_4;
+    /// let f = std::f32::consts::FRAC_PI_4;
     ///
     /// // acos(cos(pi/4))
-    /// let abs_difference = (f.cos().acos() - f32::consts::FRAC_PI_4).abs();
+    /// let abs_difference = (f.cos().acos() - std::f32::consts::FRAC_PI_4).abs();
     ///
     /// assert!(abs_difference <= f32::EPSILON);
     /// ```
@@ -686,8 +642,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let f = 1.0f32;
     ///
     /// // atan(tan(1))
@@ -712,8 +666,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// // Positive angles measured counter-clockwise
     /// // from positive x axis
     /// // -pi/4 radians (45 deg clockwise)
@@ -724,8 +676,8 @@ impl f32 {
     /// let x2 = -3.0f32;
     /// let y2 = 3.0f32;
     ///
-    /// let abs_difference_1 = (y1.atan2(x1) - (-f32::consts::FRAC_PI_4)).abs();
-    /// let abs_difference_2 = (y2.atan2(x2) - (3.0 * f32::consts::FRAC_PI_4)).abs();
+    /// let abs_difference_1 = (y1.atan2(x1) - (-std::f32::consts::FRAC_PI_4)).abs();
+    /// let abs_difference_2 = (y2.atan2(x2) - (3.0 * std::f32::consts::FRAC_PI_4)).abs();
     ///
     /// assert!(abs_difference_1 <= f32::EPSILON);
     /// assert!(abs_difference_2 <= f32::EPSILON);
@@ -743,9 +695,7 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
-    /// let x = f32::consts::FRAC_PI_4;
+    /// let x = std::f32::consts::FRAC_PI_4;
     /// let f = x.sin_cos();
     ///
     /// let abs_difference_0 = (f.0 - x.sin()).abs();
@@ -766,8 +716,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let x = 6.0f32;
     ///
     /// // e^(ln(6)) - 1
@@ -788,9 +736,7 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
-    /// let x = f32::consts::E - 1.0;
+    /// let x = std::f32::consts::E - 1.0;
     ///
     /// // ln(1 + (e - 1)) == ln(e) == 1
     /// let abs_difference = (x.ln_1p() - 1.0).abs();
@@ -809,9 +755,7 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
-    /// let e = f32::consts::E;
+    /// let e = std::f32::consts::E;
     /// let x = 1.0f32;
     ///
     /// let f = x.sinh();
@@ -833,9 +777,7 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
-    /// let e = f32::consts::E;
+    /// let e = std::f32::consts::E;
     /// let x = 1.0f32;
     /// let f = x.cosh();
     /// // Solving cosh() at 1 gives this result
@@ -857,9 +799,7 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
-    /// let e = f32::consts::E;
+    /// let e = std::f32::consts::E;
     /// let x = 1.0f32;
     ///
     /// let f = x.tanh();
@@ -881,8 +821,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let x = 1.0f32;
     /// let f = x.sinh().asinh();
     ///
@@ -906,8 +844,6 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
     /// let x = 1.0f32;
     /// let f = x.cosh().acosh();
     ///
@@ -927,9 +863,7 @@ impl f32 {
     /// # Examples
     ///
     /// ```
-    /// use std::f32;
-    ///
-    /// let e = f32::consts::E;
+    /// let e = std::f32::consts::E;
     /// let f = e.tanh().atanh();
     ///
     /// let abs_difference = (f - e).abs();
diff --git a/src/libstd/f64.rs b/src/libstd/f64.rs
index 798738e50a7..ff222fc8539 100644
--- a/src/libstd/f64.rs
+++ b/src/libstd/f64.rs
@@ -133,8 +133,6 @@ impl f64 {
     /// # Examples
     ///
     /// ```
-    /// use std::f64;
-    ///
     /// let x = 3.5_f64;
     /// let y = -3.5_f64;
     ///
@@ -162,8 +160,6 @@ impl f64 {
     /// # Examples
     ///
     /// ```
-    /// use std::f64;
-    ///
     /// let f = 3.5_f64;
     ///
     /// assert_eq!(f.signum(), 1.0);
@@ -188,8 +184,6 @@ impl f64 {
     /// # Examples
     ///
     /// ```
-    /// use std::f64;
-    ///
     /// let f = 3.5_f64;
     ///
     /// assert_eq!(f.copysign(0.42), 3.5_f64);
@@ -554,9 +548,7 @@ impl f64 {
     /// # Examples
     ///
     /// ```
-    /// use std::f64;
-    ///
-    /// let x = f64::consts::FRAC_PI_2;
+    /// let x = std::f64::consts::FRAC_PI_2;
     ///
     /// let abs_difference = (x.sin() - 1.0).abs();
     ///
@@ -574,9 +566,7 @@ impl f64 {
     /// # Examples
     ///
     /// ```
-    /// use std::f64;
-    ///
-    /// let x = 2.0 * f64::consts::PI;
+    /// let x = 2.0 * std::f64::consts::PI;
     ///
     /// let abs_difference = (x.cos() - 1.0).abs();
     ///
@@ -594,9 +584,7 @@ impl f64 {
     /// # Examples
     ///
     /// ```
-    /// use std::f64;
-    ///
-    /// let x = f64::consts::FRAC_PI_4;
+    /// let x = std::f64::consts::FRAC_PI_4;
     /// let abs_difference = (x.tan() - 1.0).abs();
     ///
     /// assert!(abs_difference < 1e-14);
@@ -615,12 +603,10 @@ impl f64 {
     /// # Examples
     ///
     /// ```
-    /// use std::f64;
-    ///
-    /// let f = f64::consts::FRAC_PI_2;
+    /// let f = std::f64::consts::FRAC_PI_2;
     ///
     /// // asin(sin(pi/2))
-    /// let abs_difference = (f.sin().asin() - f64::consts::FRAC_PI_2).abs();
+    /// let abs_difference = (f.sin().asin() - std::f64::consts::FRAC_PI_2).abs();
     ///
     /// assert!(abs_difference < 1e-10);
     /// ```
@@ -638,12 +624,10 @@ impl f64 {
     /// # Examples
     ///
     /// ```
-    /// use std::f64;
-    ///
-    /// let f = f64::consts::FRAC_PI_4;
+    /// let f = std::f64::consts::FRAC_PI_4;
     ///
     /// // acos(cos(pi/4))
-    /// let abs_difference = (f.cos().acos() - f64::consts::FRAC_PI_4).abs();
+    /// let abs_difference = (f.cos().acos() - std::f64::consts::FRAC_PI_4).abs();
     ///
     /// assert!(abs_difference < 1e-10);
     /// ```
@@ -684,8 +668,6 @@ impl f64 {
     /// # Examples
     ///
     /// ```
-    /// use std::f64;
-    ///
     /// // Positive angles measured counter-clockwise
     /// // from positive x axis
     /// // -pi/4 radians (45 deg clockwise)
@@ -696,8 +678,8 @@ impl f64 {
     /// let x2 = -3.0_f64;
     /// let y2 = 3.0_f64;
     ///
-    /// let abs_difference_1 = (y1.atan2(x1) - (-f64::consts::FRAC_PI_4)).abs();
-    /// let abs_difference_2 = (y2.atan2(x2) - (3.0 * f64::consts::FRAC_PI_4)).abs();
+    /// let abs_difference_1 = (y1.atan2(x1) - (-std::f64::consts::FRAC_PI_4)).abs();
+    /// let abs_difference_2 = (y2.atan2(x2) - (3.0 * std::f64::consts::FRAC_PI_4)).abs();
     ///
     /// assert!(abs_difference_1 < 1e-10);
     /// assert!(abs_difference_2 < 1e-10);
@@ -715,9 +697,7 @@ impl f64 {
     /// # Examples
     ///
     /// ```
-    /// use std::f64;
-    ///
-    /// let x = f64::consts::FRAC_PI_4;
+    /// let x = std::f64::consts::FRAC_PI_4;
     /// let f = x.sin_cos();
     ///
     /// let abs_difference_0 = (f.0 - x.sin()).abs();
@@ -758,9 +738,7 @@ impl f64 {
     /// # Examples
     ///
     /// ```
-    /// use std::f64;
-    ///
-    /// let x = f64::consts::E - 1.0;
+    /// let x = std::f64::consts::E - 1.0;
     ///
     /// // ln(1 + (e - 1)) == ln(e) == 1
     /// let abs_difference = (x.ln_1p() - 1.0).abs();
@@ -779,9 +757,7 @@ impl f64 {
     /// # Examples
     ///
     /// ```
-    /// use std::f64;
-    ///
-    /// let e = f64::consts::E;
+    /// let e = std::f64::consts::E;
     /// let x = 1.0_f64;
     ///
     /// let f = x.sinh();
@@ -803,9 +779,7 @@ impl f64 {
     /// # Examples
     ///
     /// ```
-    /// use std::f64;
-    ///
-    /// let e = f64::consts::E;
+    /// let e = std::f64::consts::E;
     /// let x = 1.0_f64;
     /// let f = x.cosh();
     /// // Solving cosh() at 1 gives this result
@@ -827,9 +801,7 @@ impl f64 {
     /// # Examples
     ///
     /// ```
-    /// use std::f64;
-    ///
-    /// let e = f64::consts::E;
+    /// let e = std::f64::consts::E;
     /// let x = 1.0_f64;
     ///
     /// let f = x.tanh();
@@ -893,9 +865,7 @@ impl f64 {
     /// # Examples
     ///
     /// ```
-    /// use std::f64;
-    ///
-    /// let e = f64::consts::E;
+    /// let e = std::f64::consts::E;
     /// let f = e.tanh().atanh();
     ///
     /// let abs_difference = (f - e).abs();
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