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//! Vertical (lane-wise) vector-scalar / scalar-vector arithmetic operations.
macro_rules! impl_ops_scalar_arithmetic {
([$elem_ty:ident; $elem_count:expr]: $id:ident | $test_tt:tt) => {
impl crate::ops::Add<$elem_ty> for $id {
type Output = Self;
#[inline]
fn add(self, other: $elem_ty) -> Self {
self + $id::splat(other)
}
}
impl crate::ops::Add<$id> for $elem_ty {
type Output = $id;
#[inline]
fn add(self, other: $id) -> $id {
$id::splat(self) + other
}
}
impl crate::ops::Sub<$elem_ty> for $id {
type Output = Self;
#[inline]
fn sub(self, other: $elem_ty) -> Self {
self - $id::splat(other)
}
}
impl crate::ops::Sub<$id> for $elem_ty {
type Output = $id;
#[inline]
fn sub(self, other: $id) -> $id {
$id::splat(self) - other
}
}
impl crate::ops::Mul<$elem_ty> for $id {
type Output = Self;
#[inline]
fn mul(self, other: $elem_ty) -> Self {
self * $id::splat(other)
}
}
impl crate::ops::Mul<$id> for $elem_ty {
type Output = $id;
#[inline]
fn mul(self, other: $id) -> $id {
$id::splat(self) * other
}
}
impl crate::ops::Div<$elem_ty> for $id {
type Output = Self;
#[inline]
fn div(self, other: $elem_ty) -> Self {
self / $id::splat(other)
}
}
impl crate::ops::Div<$id> for $elem_ty {
type Output = $id;
#[inline]
fn div(self, other: $id) -> $id {
$id::splat(self) / other
}
}
impl crate::ops::Rem<$elem_ty> for $id {
type Output = Self;
#[inline]
fn rem(self, other: $elem_ty) -> Self {
self % $id::splat(other)
}
}
impl crate::ops::Rem<$id> for $elem_ty {
type Output = $id;
#[inline]
fn rem(self, other: $id) -> $id {
$id::splat(self) % other
}
}
impl crate::ops::AddAssign<$elem_ty> for $id {
#[inline]
fn add_assign(&mut self, other: $elem_ty) {
*self = *self + other;
}
}
impl crate::ops::SubAssign<$elem_ty> for $id {
#[inline]
fn sub_assign(&mut self, other: $elem_ty) {
*self = *self - other;
}
}
impl crate::ops::MulAssign<$elem_ty> for $id {
#[inline]
fn mul_assign(&mut self, other: $elem_ty) {
*self = *self * other;
}
}
impl crate::ops::DivAssign<$elem_ty> for $id {
#[inline]
fn div_assign(&mut self, other: $elem_ty) {
*self = *self / other;
}
}
impl crate::ops::RemAssign<$elem_ty> for $id {
#[inline]
fn rem_assign(&mut self, other: $elem_ty) {
*self = *self % other;
}
}
test_if!{
$test_tt:
paste::item! {
pub mod [<$id _ops_scalar_arith>] {
use super::*;
#[cfg_attr(not(target_arch = "wasm32"), test)] #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
fn ops_scalar_arithmetic() {
let zi = 0 as $elem_ty;
let oi = 1 as $elem_ty;
let ti = 2 as $elem_ty;
let fi = 4 as $elem_ty;
let z = $id::splat(zi);
let o = $id::splat(oi);
let t = $id::splat(ti);
let f = $id::splat(fi);
// add
assert_eq!(zi + z, z);
assert_eq!(z + zi, z);
assert_eq!(oi + z, o);
assert_eq!(o + zi, o);
assert_eq!(ti + z, t);
assert_eq!(t + zi, t);
assert_eq!(ti + t, f);
assert_eq!(t + ti, f);
// sub
assert_eq!(zi - z, z);
assert_eq!(z - zi, z);
assert_eq!(oi - z, o);
assert_eq!(o - zi, o);
assert_eq!(ti - z, t);
assert_eq!(t - zi, t);
assert_eq!(fi - t, t);
assert_eq!(f - ti, t);
assert_eq!(f - o - o, t);
assert_eq!(f - oi - oi, t);
// mul
assert_eq!(zi * z, z);
assert_eq!(z * zi, z);
assert_eq!(zi * o, z);
assert_eq!(z * oi, z);
assert_eq!(zi * t, z);
assert_eq!(z * ti, z);
assert_eq!(oi * t, t);
assert_eq!(o * ti, t);
assert_eq!(ti * t, f);
assert_eq!(t * ti, f);
// div
assert_eq!(zi / o, z);
assert_eq!(z / oi, z);
assert_eq!(ti / o, t);
assert_eq!(t / oi, t);
assert_eq!(fi / o, f);
assert_eq!(f / oi, f);
assert_eq!(ti / t, o);
assert_eq!(t / ti, o);
assert_eq!(fi / t, t);
assert_eq!(f / ti, t);
// rem
assert_eq!(oi % o, z);
assert_eq!(o % oi, z);
assert_eq!(fi % t, z);
assert_eq!(f % ti, z);
{
let mut v = z;
assert_eq!(v, z);
v += oi; // add_assign
assert_eq!(v, o);
v -= oi; // sub_assign
assert_eq!(v, z);
v = t;
v *= oi; // mul_assign
assert_eq!(v, t);
v *= ti;
assert_eq!(v, f);
v /= oi; // div_assign
assert_eq!(v, f);
v /= ti;
assert_eq!(v, t);
v %= ti; // rem_assign
assert_eq!(v, z);
}
}
}
}
}
};
}