Merge #74

74: Run cargo fmt r=cuviper a=cuviper



Co-authored-by: Josh Stone <cuviper@gmail.com>

src/bounds.rs

@@ -1,9 +1,9 @@
-use core::{usize, u8, u16, u32, u64};
-use core::{isize, i8, i16, i32, i64};
-use core::{f32, f64};
 use core::num::Wrapping;
+use core::{f32, f64};
 #[cfg(has_i128)]
 use core::{i128, u128};
+use core::{i16, i32, i64, i8, isize};
+use core::{u16, u32, u64, u8, usize};
 
 /// Numbers which have upper and lower bounds
 pub trait Bounded {
@@ -18,12 +18,16 @@ macro_rules! bounded_impl {
     ($t:ty, $min:expr, $max:expr) => {
         impl Bounded for $t {
             #[inline]
-            fn min_value() -> $t { $min }
+            fn min_value() -> $t {
+                $min
+            }
 
             #[inline]
-            fn max_value() -> $t { $max }
+            fn max_value() -> $t {
+                $max
             }
         }
+    };
 }
 
 bounded_impl!(usize, usize::MIN, usize::MAX);
@@ -43,8 +47,12 @@ bounded_impl!(i64,   i64::MIN,   i64::MAX);
 bounded_impl!(i128, i128::MIN, i128::MAX);
 
 impl<T: Bounded> Bounded for Wrapping<T> {
-    fn min_value() -> Self { Wrapping(T::min_value()) }
+    fn min_value() -> Self {
-    fn max_value() -> Self { Wrapping(T::max_value()) }
+        Wrapping(T::min_value())
+    }
+    fn max_value() -> Self {
+        Wrapping(T::max_value())
+    }
 }
 
 bounded_impl!(f32, f32::MIN, f32::MAX);
@@ -59,9 +67,9 @@ macro_rules! for_each_tuple_ {
     );
 }
 macro_rules! for_each_tuple {
-    ( $m:ident ) => (
+    ($m:ident) => {
         for_each_tuple_! { $m !! A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, }
-    );
+    };
 }
 
 macro_rules! bounded_tuple {
@@ -82,7 +90,6 @@ macro_rules! bounded_tuple {
 for_each_tuple!(bounded_tuple);
 bounded_impl!(f64, f64::MIN, f64::MAX);
 
-
 #[test]
 fn wrapping_bounded() {
     macro_rules! test_wrapping_bounded {

src/cast.rs

@@ -1,10 +1,10 @@
-use core::{i8, i16, i32, i64, isize};
-use core::{u8, u16, u32, u64, usize};
-use core::{f32, f64};
 use core::mem::size_of;
 use core::num::Wrapping;
+use core::{f32, f64};
 #[cfg(has_i128)]
 use core::{i128, u128};
+use core::{i16, i32, i64, i8, isize};
+use core::{u16, u32, u64, u8, usize};
 
 use float::FloatCore;
 
@@ -137,7 +137,7 @@ macro_rules! impl_to_primitive_int_to_uint {
 }
 
 macro_rules! impl_to_primitive_int {
-    ($T:ident) => (
+    ($T:ident) => {
         impl ToPrimitive for $T {
             impl_to_primitive_int_to_int! { $T:
                 fn to_isize -> isize;
@@ -160,11 +160,15 @@ macro_rules! impl_to_primitive_int {
             }
 
             #[inline]
-            fn to_f32(&self) -> Option<f32> { Some(*self as f32) }
+            fn to_f32(&self) -> Option<f32> {
-            #[inline]
+                Some(*self as f32)
-            fn to_f64(&self) -> Option<f64> { Some(*self as f64) }
             }
-    )
+            #[inline]
+            fn to_f64(&self) -> Option<f64> {
+                Some(*self as f64)
+            }
+        }
+    };
 }
 
 impl_to_primitive_int!(isize);
@@ -206,7 +210,7 @@ macro_rules! impl_to_primitive_uint_to_uint {
 }
 
 macro_rules! impl_to_primitive_uint {
-    ($T:ident) => (
+    ($T:ident) => {
         impl ToPrimitive for $T {
             impl_to_primitive_uint_to_int! { $T:
                 fn to_isize -> isize;
@@ -229,11 +233,15 @@ macro_rules! impl_to_primitive_uint {
             }
 
             #[inline]
-            fn to_f32(&self) -> Option<f32> { Some(*self as f32) }
+            fn to_f32(&self) -> Option<f32> {
-            #[inline]
+                Some(*self as f32)
-            fn to_f64(&self) -> Option<f64> { Some(*self as f64) }
             }
-    )
+            #[inline]
+            fn to_f64(&self) -> Option<f64> {
+                Some(*self as f64)
+            }
+        }
+    };
 }
 
 impl_to_primitive_uint!(usize);
@@ -319,7 +327,7 @@ macro_rules! impl_to_primitive_float_to_unsigned_int {
 }
 
 macro_rules! impl_to_primitive_float {
-    ($T:ident) => (
+    ($T:ident) => {
         impl ToPrimitive for $T {
             impl_to_primitive_float_to_signed_int! { $T:
                 fn to_isize -> isize;
@@ -346,7 +354,7 @@ macro_rules! impl_to_primitive_float {
                 fn to_f64 -> f64;
             }
         }
-    )
+    };
 }
 
 impl_to_primitive_float!(f32);
@@ -463,29 +471,71 @@ pub trait FromPrimitive: Sized {
 }
 
 macro_rules! impl_from_primitive {
-    ($T:ty, $to_ty:ident) => (
+    ($T:ty, $to_ty:ident) => {
         #[allow(deprecated)]
         impl FromPrimitive for $T {
-            #[inline] fn from_isize(n: isize) -> Option<$T> { n.$to_ty() }
+            #[inline]
-            #[inline] fn from_i8(n: i8) -> Option<$T> { n.$to_ty() }
+            fn from_isize(n: isize) -> Option<$T> {
-            #[inline] fn from_i16(n: i16) -> Option<$T> { n.$to_ty() }
+                n.$to_ty()
-            #[inline] fn from_i32(n: i32) -> Option<$T> { n.$to_ty() }
-            #[inline] fn from_i64(n: i64) -> Option<$T> { n.$to_ty() }
-            #[cfg(has_i128)]
-            #[inline] fn from_i128(n: i128) -> Option<$T> { n.$to_ty() }
-
-            #[inline] fn from_usize(n: usize) -> Option<$T> { n.$to_ty() }
-            #[inline] fn from_u8(n: u8) -> Option<$T> { n.$to_ty() }
-            #[inline] fn from_u16(n: u16) -> Option<$T> { n.$to_ty() }
-            #[inline] fn from_u32(n: u32) -> Option<$T> { n.$to_ty() }
-            #[inline] fn from_u64(n: u64) -> Option<$T> { n.$to_ty() }
-            #[cfg(has_i128)]
-            #[inline] fn from_u128(n: u128) -> Option<$T> { n.$to_ty() }
-
-            #[inline] fn from_f32(n: f32) -> Option<$T> { n.$to_ty() }
-            #[inline] fn from_f64(n: f64) -> Option<$T> { n.$to_ty() }
             }
-    )
+            #[inline]
+            fn from_i8(n: i8) -> Option<$T> {
+                n.$to_ty()
+            }
+            #[inline]
+            fn from_i16(n: i16) -> Option<$T> {
+                n.$to_ty()
+            }
+            #[inline]
+            fn from_i32(n: i32) -> Option<$T> {
+                n.$to_ty()
+            }
+            #[inline]
+            fn from_i64(n: i64) -> Option<$T> {
+                n.$to_ty()
+            }
+            #[cfg(has_i128)]
+            #[inline]
+            fn from_i128(n: i128) -> Option<$T> {
+                n.$to_ty()
+            }
+
+            #[inline]
+            fn from_usize(n: usize) -> Option<$T> {
+                n.$to_ty()
+            }
+            #[inline]
+            fn from_u8(n: u8) -> Option<$T> {
+                n.$to_ty()
+            }
+            #[inline]
+            fn from_u16(n: u16) -> Option<$T> {
+                n.$to_ty()
+            }
+            #[inline]
+            fn from_u32(n: u32) -> Option<$T> {
+                n.$to_ty()
+            }
+            #[inline]
+            fn from_u64(n: u64) -> Option<$T> {
+                n.$to_ty()
+            }
+            #[cfg(has_i128)]
+            #[inline]
+            fn from_u128(n: u128) -> Option<$T> {
+                n.$to_ty()
+            }
+
+            #[inline]
+            fn from_f32(n: f32) -> Option<$T> {
+                n.$to_ty()
+            }
+            #[inline]
+            fn from_f64(n: f64) -> Option<$T> {
+                n.$to_ty()
+            }
+        }
+    };
 }
 
 impl_from_primitive!(isize, to_isize);
@@ -505,7 +555,6 @@ impl_from_primitive!(u128,  to_u128);
 impl_from_primitive!(f32, to_f32);
 impl_from_primitive!(f64, to_f64);
 
-
 macro_rules! impl_to_primitive_wrapping {
     ($( $(#[$cfg:meta])* fn $method:ident -> $i:ident ; )*) => {$(
         #[inline]
@@ -572,7 +621,6 @@ impl<T: FromPrimitive> FromPrimitive for Wrapping<T> {
     }
 }
 
-
 /// Cast from one machine scalar to another.
 ///
 /// # Examples
@@ -596,7 +644,7 @@ pub trait NumCast: Sized + ToPrimitive {
 }
 
 macro_rules! impl_num_cast {
-    ($T:ty, $conv:ident) => (
+    ($T:ty, $conv:ident) => {
         impl NumCast for $T {
             #[inline]
             #[allow(deprecated)]
@@ -606,7 +654,7 @@ macro_rules! impl_num_cast {
                 n.$conv()
             }
         }
-    )
+    };
 }
 
 impl_num_cast!(u8, to_u8);
@@ -669,7 +717,7 @@ impl<T: NumCast> NumCast for Wrapping<T> {
 ///
 pub trait AsPrimitive<T>: 'static + Copy
 where
-    T: 'static + Copy
+    T: 'static + Copy,
 {
     /// Convert a value to another, using the `as` operator.
     fn as_(self) -> T;
@@ -712,4 +760,3 @@ impl_as_primitive!(f32 => { f32, f64 });
 impl_as_primitive!(f64 => { f32, f64 });
 impl_as_primitive!(char => { char });
 impl_as_primitive!(bool => {});
-

src/float.rs

@@ -1,6 +1,6 @@
 use core::mem;
-use core::ops::Neg;
 use core::num::FpCategory;
+use core::ops::Neg;
 
 use core::f32;
 use core::f64;
@@ -586,7 +586,11 @@ pub trait FloatCore: Num + NumCast + Neg<Output = Self> + PartialOrd + Copy {
         if other.is_nan() {
             return self;
         }
-        if self < other { self } else { other }
+        if self < other {
+            self
+        } else {
+            other
+        }
     }
 
     /// Returns the maximum of the two numbers.
@@ -616,7 +620,11 @@ pub trait FloatCore: Num + NumCast + Neg<Output = Self> + PartialOrd + Copy {
         if other.is_nan() {
             return self;
         }
-        if self > other { self } else { other }
+        if self > other {
+            self
+        } else {
+            other
+        }
     }
 
     /// Returns the reciprocal (multiplicative inverse) of the number.
@@ -887,13 +895,7 @@ impl FloatCore for f64 {
 ///
 /// This trait is only available with the `std` feature.
 #[cfg(feature = "std")]
-pub trait Float
+pub trait Float: Num + Copy + NumCast + PartialOrd + Neg<Output = Self> {
-    : Num
-    + Copy
-    + NumCast
-    + PartialOrd
-    + Neg<Output = Self>
-{
     /// Returns the `NaN` value.
     ///
     /// ```
@@ -1777,7 +1779,6 @@ pub trait Float
     /// ```
     fn atanh(self) -> Self;
 
-
     /// Returns the mantissa, base 2 exponent, and sign as integers, respectively.
     /// The original number can be recovered by `sign * mantissa * 2 ^ exponent`.
     ///
@@ -1802,7 +1803,7 @@ pub trait Float
 
 #[cfg(feature = "std")]
 macro_rules! float_impl {
-    ($T:ident $decode:ident) => (
+    ($T:ident $decode:ident) => {
         impl Float for $T {
             constant! {
                 nan() -> $T::NAN;
@@ -1876,16 +1877,12 @@ macro_rules! float_impl {
                 Self::atanh(self) -> Self;
             }
         }
-    )
+    };
 }
 
 fn integer_decode_f32(f: f32) -> (u64, i16, i8) {
     let bits: u32 = unsafe { mem::transmute(f) };
-    let sign: i8 = if bits >> 31 == 0 {
+    let sign: i8 = if bits >> 31 == 0 { 1 } else { -1 };
-        1
-    } else {
-        -1
-    };
     let mut exponent: i16 = ((bits >> 23) & 0xff) as i16;
     let mantissa = if exponent == 0 {
         (bits & 0x7fffff) << 1
@@ -1899,11 +1896,7 @@ fn integer_decode_f32(f: f32) -> (u64, i16, i8) {
 
 fn integer_decode_f64(f: f64) -> (u64, i16, i8) {
     let bits: u64 = unsafe { mem::transmute(f) };
-    let sign: i8 = if bits >> 63 == 0 {
+    let sign: i8 = if bits >> 63 == 0 { 1 } else { -1 };
-        1
-    } else {
-        -1
-    };
     let mut exponent: i16 = ((bits >> 52) & 0x7ff) as i16;
     let mantissa = if exponent == 0 {
         (bits & 0xfffffffffffff) << 1
@@ -2023,6 +2016,9 @@ mod tests {
     fn to_degrees_rounding() {
         use float::FloatCore;
 
-        assert_eq!(FloatCore::to_degrees(1_f32), 57.2957795130823208767981548141051703);
+        assert_eq!(
+            FloatCore::to_degrees(1_f32),
+            57.2957795130823208767981548141051703
+        );
     }
 }

src/identities.rs

@@ -1,5 +1,5 @@
-use core::ops::{Add, Mul};
 use core::num::Wrapping;
+use core::ops::{Add, Mul};
 
 /// Defines an additive identity element for `Self`.
 pub trait Zero: Sized + Add<Self, Output = Self> {
@@ -29,11 +29,15 @@ macro_rules! zero_impl {
     ($t:ty, $v:expr) => {
         impl Zero for $t {
             #[inline]
-            fn zero() -> $t { $v }
+            fn zero() -> $t {
+                $v
+            }
             #[inline]
-            fn is_zero(&self) -> bool { *self == $v }
+            fn is_zero(&self) -> bool {
+                *self == $v
             }
         }
+    };
 }
 
 zero_impl!(usize, 0);
@@ -55,7 +59,10 @@ zero_impl!(i128,  0);
 zero_impl!(f32, 0.0);
 zero_impl!(f64, 0.0);
 
-impl<T: Zero> Zero for Wrapping<T> where Wrapping<T>: Add<Output=Wrapping<T>> {
+impl<T: Zero> Zero for Wrapping<T>
+where
+    Wrapping<T>: Add<Output = Wrapping<T>>,
+{
     fn is_zero(&self) -> bool {
         self.0.is_zero()
     }
@@ -64,7 +71,6 @@ impl<T: Zero> Zero for Wrapping<T> where Wrapping<T>: Add<Output=Wrapping<T>> {
     }
 }
 
-
 /// Defines a multiplicative identity element for `Self`.
 pub trait One: Sized + Mul<Self, Output = Self> {
     /// Returns the multiplicative identity element of `Self`, `1`.
@@ -90,7 +96,10 @@ pub trait One: Sized + Mul<Self, Output = Self> {
     /// After a semver bump, this method will be required, and the
     /// `where Self: PartialEq` bound will be removed.
     #[inline]
-    fn is_one(&self) -> bool where Self: PartialEq {
+    fn is_one(&self) -> bool
+    where
+        Self: PartialEq,
+    {
         *self == Self::one()
     }
 }
@@ -99,9 +108,11 @@ macro_rules! one_impl {
     ($t:ty, $v:expr) => {
         impl One for $t {
             #[inline]
-            fn one() -> $t { $v }
+            fn one() -> $t {
+                $v
             }
         }
+    };
 }
 
 one_impl!(usize, 1);
@@ -123,7 +134,10 @@ one_impl!(i128,   1);
 one_impl!(f32, 1.0);
 one_impl!(f64, 1.0);
 
-impl<T: One> One for Wrapping<T> where Wrapping<T>: Mul<Output=Wrapping<T>> {
+impl<T: One> One for Wrapping<T>
+where
+    Wrapping<T>: Mul<Output = Wrapping<T>>,
+{
     fn one() -> Self {
         Wrapping(T::one())
     }
@@ -132,11 +146,16 @@ impl<T: One> One for Wrapping<T> where Wrapping<T>: Mul<Output=Wrapping<T>> {
 // Some helper functions provided for backwards compatibility.
 
 /// Returns the additive identity, `0`.
-#[inline(always)] pub fn zero<T: Zero>() -> T { Zero::zero() }
+#[inline(always)]
+pub fn zero<T: Zero>() -> T {
+    Zero::zero()
+}
 
 /// Returns the multiplicative identity, `1`.
-#[inline(always)] pub fn one<T: One>() -> T { One::one() }
+#[inline(always)]
-
+pub fn one<T: One>() -> T {
+    One::one()
+}
 
 #[test]
 fn wrapping_identities() {

src/int.rs

@@ -1,16 +1,19 @@
-use core::ops::{Not, BitAnd, BitOr, BitXor, Shl, Shr};
+use core::ops::{BitAnd, BitOr, BitXor, Not, Shl, Shr};
 
-use {Num, NumCast};
 use bounds::Bounded;
 use ops::checked::*;
 use ops::saturating::Saturating;
+use {Num, NumCast};
 
-pub trait PrimInt
+pub trait PrimInt:
-    : Sized
+    Sized
     + Copy
-    + Num + NumCast
+    + Num
+    + NumCast
     + Bounded
-    + PartialOrd + Ord + Eq
+    + PartialOrd
+    + Ord
+    + Eq
     + Not<Output = Self>
     + BitAnd<Output = Self>
     + BitOr<Output = Self>
@@ -278,7 +281,7 @@ pub trait PrimInt
 }
 
 macro_rules! prim_int_impl {
-    ($T:ty, $S:ty, $U:ty) => (
+    ($T:ty, $S:ty, $U:ty) => {
         impl PrimInt for $T {
             #[inline]
             fn count_ones(self) -> u32 {
@@ -360,7 +363,7 @@ macro_rules! prim_int_impl {
                 <$T>::pow(self, exp)
             }
         }
-    )
+    };
 }
 
 // prim_int_impl!(type, signed, unsigned);

src/lib.rs

@@ -15,53 +15,51 @@
 //! The `num-traits` crate is tested for rustc 1.8 and greater.
 
 #![doc(html_root_url = "https://docs.rs/num-traits/0.2")]
-
 #![deny(unconditional_recursion)]
-
 #![no_std]
 #[cfg(feature = "std")]
 extern crate std;
 
-use core::ops::{Add, Sub, Mul, Div, Rem};
-use core::ops::{AddAssign, SubAssign, MulAssign, DivAssign, RemAssign};
-use core::num::Wrapping;
 use core::fmt;
+use core::num::Wrapping;
+use core::ops::{Add, Div, Mul, Rem, Sub};
+use core::ops::{AddAssign, DivAssign, MulAssign, RemAssign, SubAssign};
 
 pub use bounds::Bounded;
 #[cfg(feature = "std")]
 pub use float::Float;
 pub use float::FloatConst;
 // pub use real::{FloatCore, Real}; // NOTE: Don't do this, it breaks `use num_traits::*;`.
-pub use identities::{Zero, One, zero, one};
+pub use cast::{cast, AsPrimitive, FromPrimitive, NumCast, ToPrimitive};
+pub use identities::{one, zero, One, Zero};
+pub use int::PrimInt;
+pub use ops::checked::{
+    CheckedAdd, CheckedDiv, CheckedMul, CheckedNeg, CheckedRem, CheckedShl, CheckedShr, CheckedSub,
+};
 pub use ops::inv::Inv;
-pub use ops::checked::{CheckedAdd, CheckedSub, CheckedMul, CheckedDiv,
-                       CheckedRem, CheckedNeg, CheckedShl, CheckedShr};
-pub use ops::wrapping::{WrappingAdd, WrappingMul, WrappingSub};
 pub use ops::mul_add::{MulAdd, MulAddAssign};
 pub use ops::saturating::Saturating;
-pub use sign::{Signed, Unsigned, abs, abs_sub, signum};
+pub use ops::wrapping::{WrappingAdd, WrappingMul, WrappingSub};
-pub use cast::{AsPrimitive, FromPrimitive, ToPrimitive, NumCast, cast};
+pub use pow::{checked_pow, pow, Pow};
-pub use int::PrimInt;
+pub use sign::{abs, abs_sub, signum, Signed, Unsigned};
-pub use pow::{Pow, pow, checked_pow};
 
 #[macro_use]
 mod macros;
 
-pub mod identities;
-pub mod sign;
-pub mod ops;
 pub mod bounds;
+pub mod cast;
 pub mod float;
+pub mod identities;
+pub mod int;
+pub mod ops;
+pub mod pow;
 #[cfg(feature = "std")]
 pub mod real;
-pub mod cast;
+pub mod sign;
-pub mod int;
-pub mod pow;
 
 /// The base trait for numeric types, covering `0` and `1` values,
 /// comparisons, basic numeric operations, and string conversion.
-pub trait Num: PartialEq + Zero + One + NumOps
+pub trait Num: PartialEq + Zero + One + NumOps {
-{
     type FromStrRadixErr;
 
     /// Convert from a string and radix <= 36.
@@ -83,68 +81,81 @@ pub trait Num: PartialEq + Zero + One + NumOps
 /// The trait for types implementing basic numeric operations
 ///
 /// This is automatically implemented for types which implement the operators.
-pub trait NumOps<Rhs = Self, Output = Self>
+pub trait NumOps<Rhs = Self, Output = Self>:
-    : Add<Rhs, Output = Output>
+    Add<Rhs, Output = Output>
     + Sub<Rhs, Output = Output>
     + Mul<Rhs, Output = Output>
     + Div<Rhs, Output = Output>
     + Rem<Rhs, Output = Output>
-{}
+{
+}
 
 impl<T, Rhs, Output> NumOps<Rhs, Output> for T
-where T: Add<Rhs, Output = Output>
+where
+    T: Add<Rhs, Output = Output>
         + Sub<Rhs, Output = Output>
         + Mul<Rhs, Output = Output>
         + Div<Rhs, Output = Output>
-       + Rem<Rhs, Output = Output>
+        + Rem<Rhs, Output = Output>,
-{}
+{
+}
 
 /// The trait for `Num` types which also implement numeric operations taking
 /// the second operand by reference.
 ///
 /// This is automatically implemented for types which implement the operators.
 pub trait NumRef: Num + for<'r> NumOps<&'r Self> {}
-impl<T> NumRef for T where T: Num + for<'r> NumOps<&'r T> {}
+impl<T> NumRef for T
+where
+    T: Num + for<'r> NumOps<&'r T>,
+{
+}
 
 /// The trait for references which implement numeric operations, taking the
 /// second operand either by value or by reference.
 ///
 /// This is automatically implemented for types which implement the operators.
 pub trait RefNum<Base>: NumOps<Base, Base> + for<'r> NumOps<&'r Base, Base> {}
-impl<T, Base> RefNum<Base> for T where T: NumOps<Base, Base> + for<'r> NumOps<&'r Base, Base> {}
+impl<T, Base> RefNum<Base> for T
+where
+    T: NumOps<Base, Base> + for<'r> NumOps<&'r Base, Base>,
+{
+}
 
 /// The trait for types implementing numeric assignment operators (like `+=`).
 ///
 /// This is automatically implemented for types which implement the operators.
-pub trait NumAssignOps<Rhs = Self>
+pub trait NumAssignOps<Rhs = Self>:
-    : AddAssign<Rhs>
+    AddAssign<Rhs> + SubAssign<Rhs> + MulAssign<Rhs> + DivAssign<Rhs> + RemAssign<Rhs>
-    + SubAssign<Rhs>
+{
-    + MulAssign<Rhs>
+}
-    + DivAssign<Rhs>
-    + RemAssign<Rhs>
-{}
 
 impl<T, Rhs> NumAssignOps<Rhs> for T
-where T: AddAssign<Rhs>
+where
-       + SubAssign<Rhs>
+    T: AddAssign<Rhs> + SubAssign<Rhs> + MulAssign<Rhs> + DivAssign<Rhs> + RemAssign<Rhs>,
-       + MulAssign<Rhs>
+{
-       + DivAssign<Rhs>
+}
-       + RemAssign<Rhs>
-{}
 
 /// The trait for `Num` types which also implement assignment operators.
 ///
 /// This is automatically implemented for types which implement the operators.
 pub trait NumAssign: Num + NumAssignOps {}
-impl<T> NumAssign for T where T: Num + NumAssignOps {}
+impl<T> NumAssign for T
+where
+    T: Num + NumAssignOps,
+{
+}
 
 /// The trait for `NumAssign` types which also implement assignment operations
 /// taking the second operand by reference.
 ///
 /// This is automatically implemented for types which implement the operators.
 pub trait NumAssignRef: NumAssign + for<'r> NumAssignOps<&'r Self> {}
-impl<T> NumAssignRef for T where T: NumAssign + for<'r> NumAssignOps<&'r T> {}
+impl<T> NumAssignRef for T
-
+where
+    T: NumAssign + for<'r> NumAssignOps<&'r T>,
+{
+}
 
 macro_rules! int_trait_impl {
     ($name:ident for $($t:ty)*) => ($(
@@ -164,9 +175,12 @@ int_trait_impl!(Num for usize u8 u16 u32 u64 isize i8 i16 i32 i64);
 int_trait_impl!(Num for u128 i128);
 
 impl<T: Num> Num for Wrapping<T>
-    where Wrapping<T>:
+where
-          Add<Output = Wrapping<T>> + Sub<Output = Wrapping<T>>
+    Wrapping<T>: Add<Output = Wrapping<T>>
-        + Mul<Output = Wrapping<T>> + Div<Output = Wrapping<T>> + Rem<Output = Wrapping<T>>
+        + Sub<Output = Wrapping<T>>
+        + Mul<Output = Wrapping<T>>
+        + Div<Output = Wrapping<T>>
+        + Rem<Output = Wrapping<T>>,
 {
     type FromStrRadixErr = T::FromStrRadixErr;
     fn from_str_radix(str: &str, radix: u32) -> Result<Self, Self::FromStrRadixErr> {
@@ -174,7 +188,6 @@ impl<T: Num> Num for Wrapping<T>
     }
 }
 
-
 #[derive(Debug)]
 pub enum FloatErrorKind {
     Empty,
@@ -442,7 +455,8 @@ fn check_numref_ops() {
 #[test]
 fn check_refnum_ops() {
     fn compute<T: Copy>(x: &T, y: T) -> T
-        where for<'a> &'a T: RefNum<T>
+    where
+        for<'a> &'a T: RefNum<T>,
     {
         &(&(&(&(x * y) / y) % y) + y) - y
     }
@@ -452,7 +466,8 @@ fn check_refnum_ops() {
 #[test]
 fn check_refref_ops() {
     fn compute<T>(x: &T, y: &T) -> T
-        where for<'a> &'a T: RefNum<T>
+    where
+        for<'a> &'a T: RefNum<T>,
     {
         &(&(&(&(x * y) / y) % y) + y) - y
     }

src/ops/checked.rs

@@ -1,4 +1,4 @@
-use core::ops::{Add, Sub, Mul, Div, Rem, Shl, Shr};
+use core::ops::{Add, Div, Mul, Rem, Shl, Shr, Sub};
 
 /// Performs addition that returns `None` instead of wrapping around on
 /// overflow.
@@ -16,7 +16,7 @@ macro_rules! checked_impl {
                 <$t>::$method(*self, *v)
             }
         }
-    }
+    };
 }
 
 checked_impl!(CheckedAdd, checked_add, u8);
@@ -155,7 +155,7 @@ macro_rules! checked_impl_unary {
                 <$t>::$method(*self)
             }
         }
-    }
+    };
 }
 
 /// Performs negation that returns `None` if the result can't be represented.
@@ -221,7 +221,7 @@ macro_rules! checked_shift_impl {
                 <$t>::$method(*self, rhs)
             }
         }
-    }
+    };
 }
 
 checked_shift_impl!(CheckedShl, checked_shl, u8);

src/ops/inv.rs

@@ -20,20 +20,28 @@ pub trait Inv {
 impl Inv for f32 {
     type Output = f32;
     #[inline]
-    fn inv(self) -> f32 { 1.0 / self }
+    fn inv(self) -> f32 {
+        1.0 / self
+    }
 }
 impl Inv for f64 {
     type Output = f64;
     #[inline]
-    fn inv(self) -> f64 { 1.0 / self }
+    fn inv(self) -> f64 {
+        1.0 / self
+    }
 }
 impl<'a> Inv for &'a f32 {
     type Output = f32;
     #[inline]
-    fn inv(self) -> f32 { 1.0 / *self }
+    fn inv(self) -> f32 {
+        1.0 / *self
+    }
 }
 impl<'a> Inv for &'a f64 {
     type Output = f64;
     #[inline]
-    fn inv(self) -> f64 { 1.0 / *self }
+    fn inv(self) -> f64 {
+        1.0 / *self
+    }
 }

src/ops/mod.rs

@@ -1,5 +1,5 @@
-pub mod saturating;
 pub mod checked;
-pub mod wrapping;
 pub mod inv;
 pub mod mul_add;
+pub mod saturating;
+pub mod wrapping;

src/ops/wrapping.rs

@@ -1,5 +1,5 @@
-use core::ops::{Add, Sub, Mul};
 use core::num::Wrapping;
+use core::ops::{Add, Mul, Sub};
 
 macro_rules! wrapping_impl {
     ($trait_name:ident, $method:ident, $t:ty) => {
@@ -17,7 +17,7 @@ macro_rules! wrapping_impl {
                 <$t>::$method(*self, *v)
             }
         }
-    }
+    };
 }
 
 /// Performs addition that wraps around on overflow.
@@ -90,28 +90,42 @@ wrapping_impl!(WrappingMul, wrapping_mul, isize);
 wrapping_impl!(WrappingMul, wrapping_mul, i128);
 
 // Well this is a bit funny, but all the more appropriate.
-impl<T: WrappingAdd> WrappingAdd for Wrapping<T> where Wrapping<T>: Add<Output = Wrapping<T>> {
+impl<T: WrappingAdd> WrappingAdd for Wrapping<T>
+where
+    Wrapping<T>: Add<Output = Wrapping<T>>,
+{
     fn wrapping_add(&self, v: &Self) -> Self {
         Wrapping(self.0.wrapping_add(&v.0))
     }
 }
-impl<T: WrappingSub> WrappingSub for Wrapping<T> where Wrapping<T>: Sub<Output = Wrapping<T>> {
+impl<T: WrappingSub> WrappingSub for Wrapping<T>
+where
+    Wrapping<T>: Sub<Output = Wrapping<T>>,
+{
     fn wrapping_sub(&self, v: &Self) -> Self {
         Wrapping(self.0.wrapping_sub(&v.0))
     }
 }
-impl<T: WrappingMul> WrappingMul for Wrapping<T> where Wrapping<T>: Mul<Output = Wrapping<T>> {
+impl<T: WrappingMul> WrappingMul for Wrapping<T>
+where
+    Wrapping<T>: Mul<Output = Wrapping<T>>,
+{
     fn wrapping_mul(&self, v: &Self) -> Self {
         Wrapping(self.0.wrapping_mul(&v.0))
     }
 }
 
-
 #[test]
 fn test_wrapping_traits() {
-    fn wrapping_add<T: WrappingAdd>(a: T, b: T) -> T { a.wrapping_add(&b) }
+    fn wrapping_add<T: WrappingAdd>(a: T, b: T) -> T {
-    fn wrapping_sub<T: WrappingSub>(a: T, b: T) -> T { a.wrapping_sub(&b) }
+        a.wrapping_add(&b)
-    fn wrapping_mul<T: WrappingMul>(a: T, b: T) -> T { a.wrapping_mul(&b) }
+    }
+    fn wrapping_sub<T: WrappingSub>(a: T, b: T) -> T {
+        a.wrapping_sub(&b)
+    }
+    fn wrapping_mul<T: WrappingMul>(a: T, b: T) -> T {
+        a.wrapping_mul(&b)
+    }
     assert_eq!(wrapping_add(255, 1), 0u8);
     assert_eq!(wrapping_sub(0, 1), 255u8);
     assert_eq!(wrapping_mul(255, 2), 254u8);

src/pow.rs

@@ -1,6 +1,6 @@
-use core::ops::Mul;
 use core::num::Wrapping;
-use {One, CheckedMul};
+use core::ops::Mul;
+use {CheckedMul, One};
 
 /// Binary operator for raising a value to a power.
 pub trait Pow<RHS> {
@@ -183,13 +183,17 @@ mod float_impls {
 /// ```
 #[inline]
 pub fn pow<T: Clone + One + Mul<T, Output = T>>(mut base: T, mut exp: usize) -> T {
-    if exp == 0 { return T::one() }
+    if exp == 0 {
+        return T::one();
+    }
 
     while exp & 1 == 0 {
         base = base.clone() * base;
         exp >>= 1;
     }
-    if exp == 1 { return base }
+    if exp == 1 {
+        return base;
+    }
 
     let mut acc = base.clone();
     while exp > 1 {
@@ -217,19 +221,27 @@ pub fn pow<T: Clone + One + Mul<T, Output = T>>(mut base: T, mut exp: usize) ->
 /// ```
 #[inline]
 pub fn checked_pow<T: Clone + One + CheckedMul>(mut base: T, mut exp: usize) -> Option<T> {
-    if exp == 0 { return Some(T::one()) }
+    if exp == 0 {
+        return Some(T::one());
+    }
 
     macro_rules! optry {
         ($expr:expr) => {
-            if let Some(val) = $expr { val } else { return None }
+            if let Some(val) = $expr {
+                val
+            } else {
+                return None;
             }
+        };
     }
 
     while exp & 1 == 0 {
         base = optry!(base.checked_mul(&base));
         exp >>= 1;
     }
-    if exp == 1 { return Some(base) }
+    if exp == 1 {
+        return Some(base);
+    }
 
     let mut acc = base.clone();
     while exp > 1 {

src/real.rs

@@ -1,6 +1,6 @@
 use std::ops::Neg;
 
-use {Num, NumCast, Float};
+use {Float, Num, NumCast};
 
 // NOTE: These doctests have the same issue as those in src/float.rs.
 // They're testing the inherent methods directly, and not those of `Real`.
@@ -12,13 +12,7 @@ use {Num, NumCast, Float};
 /// for a list of data types that could meaningfully implement this trait.
 ///
 /// This trait is only available with the `std` feature.
-pub trait Real
+pub trait Real: Num + Copy + NumCast + PartialOrd + Neg<Output = Self> {
-    : Num
-    + Copy
-    + NumCast
-    + PartialOrd
-    + Neg<Output = Self>
-{
     /// Returns the smallest finite value that this type can represent.
     ///
     /// ```

src/sign.rs

@@ -1,8 +1,8 @@
-use core::ops::Neg;
 use core::num::Wrapping;
+use core::ops::Neg;
 
-use Num;
 use float::FloatCore;
+use Num;
 
 /// Useful functions for signed numbers (i.e. numbers that can be negative).
 pub trait Signed: Sized + Num + Neg<Output = Self> {
@@ -77,7 +77,9 @@ signed_impl!(isize i8 i16 i32 i64);
 #[cfg(has_i128)]
 signed_impl!(i128);
 
-impl<T: Signed> Signed for Wrapping<T> where Wrapping<T>: Num + Neg<Output=Wrapping<T>>
+impl<T: Signed> Signed for Wrapping<T>
+where
+    Wrapping<T>: Num + Neg<Output = Wrapping<T>>,
 {
     #[inline]
     fn abs(&self) -> Self {
@@ -95,10 +97,14 @@ impl<T: Signed> Signed for Wrapping<T> where Wrapping<T>: Num + Neg<Output=Wrapp
     }
 
     #[inline]
-    fn is_positive(&self) -> bool { self.0.is_positive() }
+    fn is_positive(&self) -> bool {
+        self.0.is_positive()
+    }
 
     #[inline]
-    fn is_negative(&self) -> bool { self.0.is_negative() }
+    fn is_negative(&self) -> bool {
+        self.0.is_negative()
+    }
 }
 
 macro_rules! signed_float_impl {
@@ -115,7 +121,11 @@ macro_rules! signed_float_impl {
             /// and `other` is returned.
             #[inline]
             fn abs_sub(&self, other: &$t) -> $t {
-                if *self <= *other { 0. } else { *self - *other }
+                if *self <= *other {
+                    0.
+                } else {
+                    *self - *other
+                }
             }
 
             /// # Returns
@@ -130,13 +140,17 @@ macro_rules! signed_float_impl {
 
             /// Returns `true` if the number is positive, including `+0.0` and `INFINITY`
             #[inline]
-            fn is_positive(&self) -> bool { FloatCore::is_sign_positive(*self) }
+            fn is_positive(&self) -> bool {
+                FloatCore::is_sign_positive(*self)
+            }
 
             /// Returns `true` if the number is negative, including `-0.0` and `NEG_INFINITY`
             #[inline]
-            fn is_negative(&self) -> bool { FloatCore::is_sign_negative(*self) }
+            fn is_negative(&self) -> bool {
+                FloatCore::is_sign_negative(*self)
             }
         }
+    };
 }
 
 signed_float_impl!(f32);
@@ -174,7 +188,10 @@ pub fn abs_sub<T: Signed>(x: T, y: T) -> T {
 /// * `0` if the number is zero
 /// * `1` if the number is positive
 /// * `-1` if the number is negative
-#[inline(always)] pub fn signum<T: Signed>(value: T) -> T { value.signum() }
+#[inline(always)]
+pub fn signum<T: Signed>(value: T) -> T {
+    value.signum()
+}
 
 /// A trait for values which cannot be negative
 pub trait Unsigned: Num {}
@@ -189,7 +206,11 @@ empty_trait_impl!(Unsigned for usize u8 u16 u32 u64);
 #[cfg(has_i128)]
 empty_trait_impl!(Unsigned for u128);
 
-impl<T: Unsigned> Unsigned for Wrapping<T> where Wrapping<T>: Num {}
+impl<T: Unsigned> Unsigned for Wrapping<T>
+where
+    Wrapping<T>: Num,
+{
+}
 
 #[test]
 fn unsigned_wrapping_is_unsigned() {

tests/cast.rs

@@ -11,11 +11,11 @@ extern crate num_traits;
 use num_traits::cast::*;
 use num_traits::Bounded;
 
-use core::{i8, i16, i32, i64, isize};
-use core::{u8, u16, u32, u64, usize};
 use core::{f32, f64};
 #[cfg(has_i128)]
 use core::{i128, u128};
+use core::{i16, i32, i64, i8, isize};
+use core::{u16, u32, u64, u8, usize};
 
 use core::fmt::Debug;
 use core::mem;