pub trait Mul<Rhs = Self> {
type Output;
// Required method
fn mul(self, rhs: Rhs) -> Self::Output;
}
Available on crate feature
std
only.Expand description
The multiplication operator *
.
Note that Rhs
is Self
by default, but this is not mandatory.
§Examples
§Mul
tipliable rational numbers
use std::ops::Mul;
// By the fundamental theorem of arithmetic, rational numbers in lowest
// terms are unique. So, by keeping `Rational`s in reduced form, we can
// derive `Eq` and `PartialEq`.
#[derive(Debug, Eq, PartialEq)]
struct Rational {
numerator: usize,
denominator: usize,
}
impl Rational {
fn new(numerator: usize, denominator: usize) -> Self {
if denominator == 0 {
panic!("Zero is an invalid denominator!");
}
// Reduce to lowest terms by dividing by the greatest common
// divisor.
let gcd = gcd(numerator, denominator);
Self {
numerator: numerator / gcd,
denominator: denominator / gcd,
}
}
}
impl Mul for Rational {
// The multiplication of rational numbers is a closed operation.
type Output = Self;
fn mul(self, rhs: Self) -> Self {
let numerator = self.numerator * rhs.numerator;
let denominator = self.denominator * rhs.denominator;
Self::new(numerator, denominator)
}
}
// Euclid's two-thousand-year-old algorithm for finding the greatest common
// divisor.
fn gcd(x: usize, y: usize) -> usize {
let mut x = x;
let mut y = y;
while y != 0 {
let t = y;
y = x % y;
x = t;
}
x
}
assert_eq!(Rational::new(1, 2), Rational::new(2, 4));
assert_eq!(Rational::new(2, 3) * Rational::new(3, 4),
Rational::new(1, 2));
§Multiplying vectors by scalars as in linear algebra
use std::ops::Mul;
struct Scalar { value: usize }
#[derive(Debug, PartialEq)]
struct Vector { value: Vec<usize> }
impl Mul<Scalar> for Vector {
type Output = Self;
fn mul(self, rhs: Scalar) -> Self::Output {
Self { value: self.value.iter().map(|v| v * rhs.value).collect() }
}
}
let vector = Vector { value: vec![2, 4, 6] };
let scalar = Scalar { value: 3 };
assert_eq!(vector * scalar, Vector { value: vec![6, 12, 18] });
Required Associated Types§
Required Methods§
Implementors§
1.74.0 · source§impl Mul for Saturating<i8>
impl Mul for Saturating<i8>
type Output = Saturating<i8>
1.74.0 · source§impl Mul for Saturating<i16>
impl Mul for Saturating<i16>
type Output = Saturating<i16>
1.74.0 · source§impl Mul for Saturating<i32>
impl Mul for Saturating<i32>
type Output = Saturating<i32>
1.74.0 · source§impl Mul for Saturating<i64>
impl Mul for Saturating<i64>
type Output = Saturating<i64>
1.74.0 · source§impl Mul for Saturating<i128>
impl Mul for Saturating<i128>
type Output = Saturating<i128>
1.74.0 · source§impl Mul for Saturating<isize>
impl Mul for Saturating<isize>
type Output = Saturating<isize>
1.74.0 · source§impl Mul for Saturating<u8>
impl Mul for Saturating<u8>
type Output = Saturating<u8>
1.74.0 · source§impl Mul for Saturating<u16>
impl Mul for Saturating<u16>
type Output = Saturating<u16>
1.74.0 · source§impl Mul for Saturating<u32>
impl Mul for Saturating<u32>
type Output = Saturating<u32>
1.74.0 · source§impl Mul for Saturating<u64>
impl Mul for Saturating<u64>
type Output = Saturating<u64>
1.74.0 · source§impl Mul for Saturating<u128>
impl Mul for Saturating<u128>
type Output = Saturating<u128>
1.74.0 · source§impl Mul for Saturating<usize>
impl Mul for Saturating<usize>
type Output = Saturating<usize>
1.74.0 · source§impl Mul<&Saturating<i8>> for &Saturating<i8>
impl Mul<&Saturating<i8>> for &Saturating<i8>
1.74.0 · source§impl Mul<&Saturating<i8>> for Saturating<i8>
impl Mul<&Saturating<i8>> for Saturating<i8>
1.74.0 · source§impl Mul<&Saturating<i16>> for &Saturating<i16>
impl Mul<&Saturating<i16>> for &Saturating<i16>
1.74.0 · source§impl Mul<&Saturating<i16>> for Saturating<i16>
impl Mul<&Saturating<i16>> for Saturating<i16>
1.74.0 · source§impl Mul<&Saturating<i32>> for &Saturating<i32>
impl Mul<&Saturating<i32>> for &Saturating<i32>
1.74.0 · source§impl Mul<&Saturating<i32>> for Saturating<i32>
impl Mul<&Saturating<i32>> for Saturating<i32>
1.74.0 · source§impl Mul<&Saturating<i64>> for &Saturating<i64>
impl Mul<&Saturating<i64>> for &Saturating<i64>
1.74.0 · source§impl Mul<&Saturating<i64>> for Saturating<i64>
impl Mul<&Saturating<i64>> for Saturating<i64>
1.74.0 · source§impl Mul<&Saturating<i128>> for &Saturating<i128>
impl Mul<&Saturating<i128>> for &Saturating<i128>
1.74.0 · source§impl Mul<&Saturating<i128>> for Saturating<i128>
impl Mul<&Saturating<i128>> for Saturating<i128>
1.74.0 · source§impl Mul<&Saturating<isize>> for &Saturating<isize>
impl Mul<&Saturating<isize>> for &Saturating<isize>
1.74.0 · source§impl Mul<&Saturating<isize>> for Saturating<isize>
impl Mul<&Saturating<isize>> for Saturating<isize>
1.74.0 · source§impl Mul<&Saturating<u8>> for &Saturating<u8>
impl Mul<&Saturating<u8>> for &Saturating<u8>
1.74.0 · source§impl Mul<&Saturating<u8>> for Saturating<u8>
impl Mul<&Saturating<u8>> for Saturating<u8>
1.74.0 · source§impl Mul<&Saturating<u16>> for &Saturating<u16>
impl Mul<&Saturating<u16>> for &Saturating<u16>
1.74.0 · source§impl Mul<&Saturating<u16>> for Saturating<u16>
impl Mul<&Saturating<u16>> for Saturating<u16>
1.74.0 · source§impl Mul<&Saturating<u32>> for &Saturating<u32>
impl Mul<&Saturating<u32>> for &Saturating<u32>
1.74.0 · source§impl Mul<&Saturating<u32>> for Saturating<u32>
impl Mul<&Saturating<u32>> for Saturating<u32>
1.74.0 · source§impl Mul<&Saturating<u64>> for &Saturating<u64>
impl Mul<&Saturating<u64>> for &Saturating<u64>
1.74.0 · source§impl Mul<&Saturating<u64>> for Saturating<u64>
impl Mul<&Saturating<u64>> for Saturating<u64>
1.74.0 · source§impl Mul<&Saturating<u128>> for &Saturating<u128>
impl Mul<&Saturating<u128>> for &Saturating<u128>
1.74.0 · source§impl Mul<&Saturating<u128>> for Saturating<u128>
impl Mul<&Saturating<u128>> for Saturating<u128>
1.74.0 · source§impl Mul<&Saturating<usize>> for &Saturating<usize>
impl Mul<&Saturating<usize>> for &Saturating<usize>
1.74.0 · source§impl Mul<&Saturating<usize>> for Saturating<usize>
impl Mul<&Saturating<usize>> for Saturating<usize>
source§impl Mul<&LittleEndian<f32>> for &LittleEndian<f32>
impl Mul<&LittleEndian<f32>> for &LittleEndian<f32>
source§impl Mul<&LittleEndian<f32>> for LittleEndian<f32>
impl Mul<&LittleEndian<f32>> for LittleEndian<f32>
source§impl Mul<&LittleEndian<f64>> for &LittleEndian<f64>
impl Mul<&LittleEndian<f64>> for &LittleEndian<f64>
source§impl Mul<&LittleEndian<f64>> for LittleEndian<f64>
impl Mul<&LittleEndian<f64>> for LittleEndian<f64>
source§impl Mul<&LittleEndian<i16>> for &LittleEndian<i16>
impl Mul<&LittleEndian<i16>> for &LittleEndian<i16>
source§impl Mul<&LittleEndian<i16>> for LittleEndian<i16>
impl Mul<&LittleEndian<i16>> for LittleEndian<i16>
source§impl Mul<&LittleEndian<i32>> for &LittleEndian<i32>
impl Mul<&LittleEndian<i32>> for &LittleEndian<i32>
source§impl Mul<&LittleEndian<i32>> for LittleEndian<i32>
impl Mul<&LittleEndian<i32>> for LittleEndian<i32>
source§impl Mul<&LittleEndian<i64>> for &LittleEndian<i64>
impl Mul<&LittleEndian<i64>> for &LittleEndian<i64>
source§impl Mul<&LittleEndian<i64>> for LittleEndian<i64>
impl Mul<&LittleEndian<i64>> for LittleEndian<i64>
source§impl Mul<&LittleEndian<i128>> for &LittleEndian<i128>
impl Mul<&LittleEndian<i128>> for &LittleEndian<i128>
source§impl Mul<&LittleEndian<i128>> for LittleEndian<i128>
impl Mul<&LittleEndian<i128>> for LittleEndian<i128>
source§impl Mul<&LittleEndian<u16>> for &LittleEndian<u16>
impl Mul<&LittleEndian<u16>> for &LittleEndian<u16>
source§impl Mul<&LittleEndian<u16>> for LittleEndian<u16>
impl Mul<&LittleEndian<u16>> for LittleEndian<u16>
source§impl Mul<&LittleEndian<u32>> for &LittleEndian<u32>
impl Mul<&LittleEndian<u32>> for &LittleEndian<u32>
source§impl Mul<&LittleEndian<u32>> for LittleEndian<u32>
impl Mul<&LittleEndian<u32>> for LittleEndian<u32>
source§impl Mul<&LittleEndian<u64>> for &LittleEndian<u64>
impl Mul<&LittleEndian<u64>> for &LittleEndian<u64>
source§impl Mul<&LittleEndian<u64>> for LittleEndian<u64>
impl Mul<&LittleEndian<u64>> for LittleEndian<u64>
source§impl Mul<&LittleEndian<u128>> for &LittleEndian<u128>
impl Mul<&LittleEndian<u128>> for &LittleEndian<u128>
source§impl Mul<&LittleEndian<u128>> for LittleEndian<u128>
impl Mul<&LittleEndian<u128>> for LittleEndian<u128>
source§impl Mul<&NativeEndian<f32>> for &NativeEndian<f32>
impl Mul<&NativeEndian<f32>> for &NativeEndian<f32>
source§impl Mul<&NativeEndian<f32>> for NativeEndian<f32>
impl Mul<&NativeEndian<f32>> for NativeEndian<f32>
source§impl Mul<&NativeEndian<f64>> for &NativeEndian<f64>
impl Mul<&NativeEndian<f64>> for &NativeEndian<f64>
source§impl Mul<&NativeEndian<f64>> for NativeEndian<f64>
impl Mul<&NativeEndian<f64>> for NativeEndian<f64>
source§impl Mul<&NativeEndian<i16>> for &NativeEndian<i16>
impl Mul<&NativeEndian<i16>> for &NativeEndian<i16>
source§impl Mul<&NativeEndian<i16>> for NativeEndian<i16>
impl Mul<&NativeEndian<i16>> for NativeEndian<i16>
source§impl Mul<&NativeEndian<i32>> for &NativeEndian<i32>
impl Mul<&NativeEndian<i32>> for &NativeEndian<i32>
source§impl Mul<&NativeEndian<i32>> for NativeEndian<i32>
impl Mul<&NativeEndian<i32>> for NativeEndian<i32>
source§impl Mul<&NativeEndian<i64>> for &NativeEndian<i64>
impl Mul<&NativeEndian<i64>> for &NativeEndian<i64>
source§impl Mul<&NativeEndian<i64>> for NativeEndian<i64>
impl Mul<&NativeEndian<i64>> for NativeEndian<i64>
source§impl Mul<&NativeEndian<i128>> for &NativeEndian<i128>
impl Mul<&NativeEndian<i128>> for &NativeEndian<i128>
source§impl Mul<&NativeEndian<i128>> for NativeEndian<i128>
impl Mul<&NativeEndian<i128>> for NativeEndian<i128>
source§impl Mul<&NativeEndian<u16>> for &NativeEndian<u16>
impl Mul<&NativeEndian<u16>> for &NativeEndian<u16>
source§impl Mul<&NativeEndian<u16>> for NativeEndian<u16>
impl Mul<&NativeEndian<u16>> for NativeEndian<u16>
source§impl Mul<&NativeEndian<u32>> for &NativeEndian<u32>
impl Mul<&NativeEndian<u32>> for &NativeEndian<u32>
source§impl Mul<&NativeEndian<u32>> for NativeEndian<u32>
impl Mul<&NativeEndian<u32>> for NativeEndian<u32>
source§impl Mul<&NativeEndian<u64>> for &NativeEndian<u64>
impl Mul<&NativeEndian<u64>> for &NativeEndian<u64>
source§impl Mul<&NativeEndian<u64>> for NativeEndian<u64>
impl Mul<&NativeEndian<u64>> for NativeEndian<u64>
source§impl Mul<&NativeEndian<u128>> for &NativeEndian<u128>
impl Mul<&NativeEndian<u128>> for &NativeEndian<u128>
source§impl Mul<&NativeEndian<u128>> for NativeEndian<u128>
impl Mul<&NativeEndian<u128>> for NativeEndian<u128>
source§impl Mul<LittleEndian<f32>> for &LittleEndian<f32>
impl Mul<LittleEndian<f32>> for &LittleEndian<f32>
source§impl Mul<LittleEndian<f64>> for &LittleEndian<f64>
impl Mul<LittleEndian<f64>> for &LittleEndian<f64>
source§impl Mul<LittleEndian<i16>> for &LittleEndian<i16>
impl Mul<LittleEndian<i16>> for &LittleEndian<i16>
source§impl Mul<LittleEndian<i32>> for &LittleEndian<i32>
impl Mul<LittleEndian<i32>> for &LittleEndian<i32>
source§impl Mul<LittleEndian<i64>> for &LittleEndian<i64>
impl Mul<LittleEndian<i64>> for &LittleEndian<i64>
source§impl Mul<LittleEndian<i128>> for &LittleEndian<i128>
impl Mul<LittleEndian<i128>> for &LittleEndian<i128>
source§impl Mul<LittleEndian<u16>> for &LittleEndian<u16>
impl Mul<LittleEndian<u16>> for &LittleEndian<u16>
source§impl Mul<LittleEndian<u32>> for &LittleEndian<u32>
impl Mul<LittleEndian<u32>> for &LittleEndian<u32>
source§impl Mul<LittleEndian<u64>> for &LittleEndian<u64>
impl Mul<LittleEndian<u64>> for &LittleEndian<u64>
source§impl Mul<LittleEndian<u128>> for &LittleEndian<u128>
impl Mul<LittleEndian<u128>> for &LittleEndian<u128>
source§impl Mul<NativeEndian<f32>> for &NativeEndian<f32>
impl Mul<NativeEndian<f32>> for &NativeEndian<f32>
source§impl Mul<NativeEndian<f64>> for &NativeEndian<f64>
impl Mul<NativeEndian<f64>> for &NativeEndian<f64>
source§impl Mul<NativeEndian<i16>> for &NativeEndian<i16>
impl Mul<NativeEndian<i16>> for &NativeEndian<i16>
source§impl Mul<NativeEndian<i32>> for &NativeEndian<i32>
impl Mul<NativeEndian<i32>> for &NativeEndian<i32>
source§impl Mul<NativeEndian<i64>> for &NativeEndian<i64>
impl Mul<NativeEndian<i64>> for &NativeEndian<i64>
source§impl Mul<NativeEndian<i128>> for &NativeEndian<i128>
impl Mul<NativeEndian<i128>> for &NativeEndian<i128>
source§impl Mul<NativeEndian<u16>> for &NativeEndian<u16>
impl Mul<NativeEndian<u16>> for &NativeEndian<u16>
source§impl Mul<NativeEndian<u32>> for &NativeEndian<u32>
impl Mul<NativeEndian<u32>> for &NativeEndian<u32>
source§impl Mul<NativeEndian<u64>> for &NativeEndian<u64>
impl Mul<NativeEndian<u64>> for &NativeEndian<u64>
source§impl Mul<NativeEndian<u128>> for &NativeEndian<u128>
impl Mul<NativeEndian<u128>> for &NativeEndian<u128>
1.74.0 · source§impl<'a> Mul<Saturating<i8>> for &'a Saturating<i8>
impl<'a> Mul<Saturating<i8>> for &'a Saturating<i8>
1.74.0 · source§impl<'a> Mul<Saturating<i16>> for &'a Saturating<i16>
impl<'a> Mul<Saturating<i16>> for &'a Saturating<i16>
1.74.0 · source§impl<'a> Mul<Saturating<i32>> for &'a Saturating<i32>
impl<'a> Mul<Saturating<i32>> for &'a Saturating<i32>
1.74.0 · source§impl<'a> Mul<Saturating<i64>> for &'a Saturating<i64>
impl<'a> Mul<Saturating<i64>> for &'a Saturating<i64>
1.74.0 · source§impl<'a> Mul<Saturating<i128>> for &'a Saturating<i128>
impl<'a> Mul<Saturating<i128>> for &'a Saturating<i128>
1.74.0 · source§impl<'a> Mul<Saturating<isize>> for &'a Saturating<isize>
impl<'a> Mul<Saturating<isize>> for &'a Saturating<isize>
1.74.0 · source§impl<'a> Mul<Saturating<u8>> for &'a Saturating<u8>
impl<'a> Mul<Saturating<u8>> for &'a Saturating<u8>
1.74.0 · source§impl<'a> Mul<Saturating<u16>> for &'a Saturating<u16>
impl<'a> Mul<Saturating<u16>> for &'a Saturating<u16>
1.74.0 · source§impl<'a> Mul<Saturating<u32>> for &'a Saturating<u32>
impl<'a> Mul<Saturating<u32>> for &'a Saturating<u32>
1.74.0 · source§impl<'a> Mul<Saturating<u64>> for &'a Saturating<u64>
impl<'a> Mul<Saturating<u64>> for &'a Saturating<u64>
1.74.0 · source§impl<'a> Mul<Saturating<u128>> for &'a Saturating<u128>
impl<'a> Mul<Saturating<u128>> for &'a Saturating<u128>
1.74.0 · source§impl<'a> Mul<Saturating<usize>> for &'a Saturating<usize>
impl<'a> Mul<Saturating<usize>> for &'a Saturating<usize>
source§impl<Ul, B, Ur> Mul<UInt<Ur, B>> for UInt<Ul, B0>
impl<Ul, B, Ur> Mul<UInt<Ur, B>> for UInt<Ul, B0>
UInt<Ul, B0> * UInt<Ur, B> = UInt<(Ul * UInt<Ur, B>), B0>
source§impl<Ul, B, Ur> Mul<UInt<Ur, B>> for UInt<Ul, B1>
impl<Ul, B, Ur> Mul<UInt<Ur, B>> for UInt<Ul, B1>
UInt<Ul, B1> * UInt<Ur, B> = UInt<(Ul * UInt<Ur, B>), B0> + UInt<Ur, B>