1.0.0[−][src]Trait std::ops::Neg

#[lang = "neg"]
pub trait Neg {
    type Output;
#[must_use]
    fn neg(self) -> Self::Output;
}

The unary negation operator -.

Examples

An implementation of Neg for Sign, which allows the use of - to negate its value.

use std::ops::Neg;

#[derive(Debug, PartialEq)]
enum Sign {
    Negative,
    Zero,
    Positive,
}

impl Neg for Sign {
    type Output = Sign;

    fn neg(self) -> Self::Output {
        match self {
            Sign::Negative => Sign::Positive,
            Sign::Zero => Sign::Zero,
            Sign::Positive => Sign::Negative,
        }
    }
}

// A negative positive is a negative.
assert_eq!(-Sign::Positive, Sign::Negative);
// A double negative is a positive.
assert_eq!(-Sign::Negative, Sign::Positive);
// Zero is its own negation.
assert_eq!(-Sign::Zero, Sign::Zero);Run

Associated Types

`type Output`

The resulting type after applying the - operator.

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Required methods

`#[must_use] fn neg(self) -> Self::Output`

Performs the unary - operation.

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Implementors

`impl Neg for f32`[src]

`type Output = f32`

`fn neg(self) -> f32`[src]

`impl Neg for f64`[src]

`type Output = f64`

`fn neg(self) -> f64`[src]

`impl Neg for i128`[src]

`type Output = i128`

`fn neg(self) -> i128`[src]

`impl Neg for i16`[src]

`type Output = i16`

`fn neg(self) -> i16`[src]

`impl Neg for i32`[src]

`type Output = i32`

`fn neg(self) -> i32`[src]

`impl Neg for i64`[src]

`type Output = i64`

`fn neg(self) -> i64`[src]

`impl Neg for i8`[src]

`type Output = i8`

`fn neg(self) -> i8`[src]

`impl Neg for isize`[src]

`type Output = isize`

`fn neg(self) -> isize`[src]

`impl Neg for Wrapping<i128>`[src]

`type Output = Wrapping<i128>`

`fn neg(self) -> Wrapping<i128>`[src]

`impl Neg for Wrapping<i16>`[src]

`type Output = Wrapping<i16>`

`fn neg(self) -> Wrapping<i16>`[src]

`impl Neg for Wrapping<i32>`[src]

`type Output = Wrapping<i32>`

`fn neg(self) -> Wrapping<i32>`[src]

`impl Neg for Wrapping<i64>`[src]

`type Output = Wrapping<i64>`

`fn neg(self) -> Wrapping<i64>`[src]

`impl Neg for Wrapping<i8>`[src]

`type Output = Wrapping<i8>`

`fn neg(self) -> Wrapping<i8>`[src]

`impl Neg for Wrapping<isize>`[src]

`type Output = Wrapping<isize>`

`fn neg(self) -> Wrapping<isize>`[src]

`impl Neg for Wrapping<u128>`[src]

`type Output = Wrapping<u128>`

`fn neg(self) -> Wrapping<u128>`[src]

`impl Neg for Wrapping<u16>`[src]

`type Output = Wrapping<u16>`

`fn neg(self) -> Wrapping<u16>`[src]

`impl Neg for Wrapping<u32>`[src]

`type Output = Wrapping<u32>`

`fn neg(self) -> Wrapping<u32>`[src]

`impl Neg for Wrapping<u64>`[src]

`type Output = Wrapping<u64>`

`fn neg(self) -> Wrapping<u64>`[src]

`impl Neg for Wrapping<u8>`[src]

`type Output = Wrapping<u8>`

`fn neg(self) -> Wrapping<u8>`[src]

`impl Neg for Wrapping<usize>`[src]

`type Output = Wrapping<usize>`

`fn neg(self) -> Wrapping<usize>`[src]

`impl<'_> Neg for &'_ f32`[src]

`type Output = <f32 as Neg>::Output`

`fn neg(self) -> <f32 as Neg>::Output`[src]

`impl<'_> Neg for &'_ f64`[src]

`type Output = <f64 as Neg>::Output`

`fn neg(self) -> <f64 as Neg>::Output`[src]

`impl<'_> Neg for &'_ i128`[src]

`type Output = <i128 as Neg>::Output`

`fn neg(self) -> <i128 as Neg>::Output`[src]

`impl<'_> Neg for &'_ i16`[src]

`type Output = <i16 as Neg>::Output`

`fn neg(self) -> <i16 as Neg>::Output`[src]

`impl<'_> Neg for &'_ i32`[src]

`type Output = <i32 as Neg>::Output`

`fn neg(self) -> <i32 as Neg>::Output`[src]

`impl<'_> Neg for &'_ i64`[src]

`type Output = <i64 as Neg>::Output`

`fn neg(self) -> <i64 as Neg>::Output`[src]

`impl<'_> Neg for &'_ i8`[src]

`type Output = <i8 as Neg>::Output`

`fn neg(self) -> <i8 as Neg>::Output`[src]

`impl<'_> Neg for &'_ isize`[src]

`type Output = <isize as Neg>::Output`

`fn neg(self) -> <isize as Neg>::Output`[src]

`impl<'_> Neg for &'_ Wrapping<i128>`[src]

`type Output = <Wrapping<i128> as Neg>::Output`

`fn neg(self) -> <Wrapping<i128> as Neg>::Output`[src]

`impl<'_> Neg for &'_ Wrapping<i16>`[src]

`type Output = <Wrapping<i16> as Neg>::Output`

`fn neg(self) -> <Wrapping<i16> as Neg>::Output`[src]

`impl<'_> Neg for &'_ Wrapping<i32>`[src]

`type Output = <Wrapping<i32> as Neg>::Output`

`fn neg(self) -> <Wrapping<i32> as Neg>::Output`[src]

`impl<'_> Neg for &'_ Wrapping<i64>`[src]

`type Output = <Wrapping<i64> as Neg>::Output`

`fn neg(self) -> <Wrapping<i64> as Neg>::Output`[src]

`impl<'_> Neg for &'_ Wrapping<i8>`[src]

`type Output = <Wrapping<i8> as Neg>::Output`

`fn neg(self) -> <Wrapping<i8> as Neg>::Output`[src]

`impl<'_> Neg for &'_ Wrapping<isize>`[src]

`type Output = <Wrapping<isize> as Neg>::Output`

`fn neg(self) -> <Wrapping<isize> as Neg>::Output`[src]

`impl<'_> Neg for &'_ Wrapping<u128>`[src]

`type Output = <Wrapping<u128> as Neg>::Output`

`fn neg(self) -> <Wrapping<u128> as Neg>::Output`[src]

`impl<'_> Neg for &'_ Wrapping<u16>`[src]

`type Output = <Wrapping<u16> as Neg>::Output`

`fn neg(self) -> <Wrapping<u16> as Neg>::Output`[src]

`impl<'_> Neg for &'_ Wrapping<u32>`[src]

`type Output = <Wrapping<u32> as Neg>::Output`

`fn neg(self) -> <Wrapping<u32> as Neg>::Output`[src]

`impl<'_> Neg for &'_ Wrapping<u64>`[src]

`type Output = <Wrapping<u64> as Neg>::Output`

`fn neg(self) -> <Wrapping<u64> as Neg>::Output`[src]

`impl<'_> Neg for &'_ Wrapping<u8>`[src]

`type Output = <Wrapping<u8> as Neg>::Output`

`fn neg(self) -> <Wrapping<u8> as Neg>::Output`[src]

`impl<'_> Neg for &'_ Wrapping<usize>`[src]

`type Output = <Wrapping<usize> as Neg>::Output`

`fn neg(self) -> <Wrapping<usize> as Neg>::Output`[src]

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