[][src]Trait sp_arithmetic::traits::Signed

pub trait Signed: Num + Neg<Output = Self> {
    pub fn abs(&self) -> Self;
pub fn abs_sub(&self, other: &Self) -> Self;
pub fn signum(&self) -> Self;
pub fn is_positive(&self) -> bool;
pub fn is_negative(&self) -> bool; }

Useful functions for signed numbers (i.e. numbers that can be negative).

Required methods

pub fn abs(&self) -> Self[src]

Computes the absolute value.

For f32 and f64, NaN will be returned if the number is NaN.

For signed integers, ::MIN will be returned if the number is ::MIN.

pub fn abs_sub(&self, other: &Self) -> Self[src]

The positive difference of two numbers.

Returns zero if the number is less than or equal to other, otherwise the difference between self and other is returned.

pub fn signum(&self) -> Self[src]

Returns the sign of the number.

For f32 and f64:

  • 1.0 if the number is positive, +0.0 or INFINITY
  • -1.0 if the number is negative, -0.0 or NEG_INFINITY
  • NaN if the number is NaN

For signed integers:

  • 0 if the number is zero
  • 1 if the number is positive
  • -1 if the number is negative

pub fn is_positive(&self) -> bool[src]

Returns true if the number is positive and false if the number is zero or negative.

pub fn is_negative(&self) -> bool[src]

Returns true if the number is negative and false if the number is zero or positive.

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Implementations on Foreign Types

impl<T> Signed for Wrapping<T> where
    T: Signed,
    Wrapping<T>: Num,
    Wrapping<T>: Neg,
    <Wrapping<T> as Neg>::Output == Wrapping<T>, 
[src]

impl Signed for i32[src]

impl Signed for f32[src]

pub fn abs(&self) -> f32[src]

Computes the absolute value. Returns NAN if the number is NAN.

pub fn abs_sub(&self, other: &f32) -> f32[src]

The positive difference of two numbers. Returns 0.0 if the number is less than or equal to other, otherwise the difference betweenself and other is returned.

pub fn signum(&self) -> f32[src]

Returns

  • 1.0 if the number is positive, +0.0 or INFINITY
  • -1.0 if the number is negative, -0.0 or NEG_INFINITY
  • NAN if the number is NaN

pub fn is_positive(&self) -> bool[src]

Returns true if the number is positive, including +0.0 and INFINITY

pub fn is_negative(&self) -> bool[src]

Returns true if the number is negative, including -0.0 and NEG_INFINITY

impl Signed for isize[src]

impl Signed for f64[src]

pub fn abs(&self) -> f64[src]

Computes the absolute value. Returns NAN if the number is NAN.

pub fn abs_sub(&self, other: &f64) -> f64[src]

The positive difference of two numbers. Returns 0.0 if the number is less than or equal to other, otherwise the difference betweenself and other is returned.

pub fn signum(&self) -> f64[src]

Returns

  • 1.0 if the number is positive, +0.0 or INFINITY
  • -1.0 if the number is negative, -0.0 or NEG_INFINITY
  • NAN if the number is NaN

pub fn is_positive(&self) -> bool[src]

Returns true if the number is positive, including +0.0 and INFINITY

pub fn is_negative(&self) -> bool[src]

Returns true if the number is negative, including -0.0 and NEG_INFINITY

impl Signed for i64[src]

impl Signed for i128[src]

impl Signed for i16[src]

impl Signed for i8[src]

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Implementors

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