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use crate::num::arithmetic::traits::{SubMul, SubMulAssign, WrappingSubMul, WrappingSubMulAssign};
macro_rules! impl_sub_mul_primitive_int {
($t:ident) => {
impl SubMul<$t> for $t {
type Output = $t;
/// Subtracts a number by the product of two other numbers.
///
/// $f(x, y, z) = x - yz$.
///
/// # Worst-case complexity
/// Constant time and additional memory.
///
/// # Examples
/// See [here](super::sub_mul#sub_mul).
#[inline]
fn sub_mul(self, y: $t, z: $t) -> $t {
self.wrapping_sub_mul(y, z)
}
}
impl SubMulAssign<$t> for $t {
/// Subtracts a number by the product of two other numbers in place.
///
/// $x \gets x - yz$.
///
/// # Worst-case complexity
/// Constant time and additional memory.
///
/// # Examples
/// See [here](super::sub_mul#sub_mul_assign).
#[inline]
fn sub_mul_assign(&mut self, y: $t, z: $t) {
self.wrapping_sub_mul_assign(y, z);
}
}
};
}
apply_to_primitive_ints!(impl_sub_mul_primitive_int);
macro_rules! impl_sub_mul_primitive_float {
($t:ident) => {
impl SubMul for $t {
type Output = $t;
/// Subtracts a number by the product of two other numbers.
///
/// $f(x, y, z) = x - yz$.
///
/// # Worst-case complexity
/// Constant time and additional memory.
///
/// # Examples
/// See [here](super::sub_mul#sub_mul).
#[inline]
fn sub_mul(self, y: $t, z: $t) -> $t {
self - y * z
}
}
impl SubMulAssign<$t> for $t {
/// Subtracts a number by the product of two other numbers in place.
///
/// $x \gets x - yz$.
///
/// # Worst-case complexity
/// Constant time and additional memory.
///
/// # Examples
/// See [here](super::sub_mul#sub_mul_assign).
#[inline]
fn sub_mul_assign(&mut self, y: $t, z: $t) {
*self -= y * z;
}
}
};
}
apply_to_primitive_floats!(impl_sub_mul_primitive_float);