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macro_rules! impl_ops_scalar_shifts {
([$elem_ty:ident; $elem_count:expr]: $id:ident | $test_tt:tt) => {
impl crate::ops::Shl<u32> for $id {
type Output = Self;
#[inline]
fn shl(self, other: u32) -> Self {
self << $id::splat(other as $elem_ty)
}
}
impl crate::ops::Shr<u32> for $id {
type Output = Self;
#[inline]
fn shr(self, other: u32) -> Self {
self >> $id::splat(other as $elem_ty)
}
}
impl crate::ops::ShlAssign<u32> for $id {
#[inline]
fn shl_assign(&mut self, other: u32) {
*self = *self << other;
}
}
impl crate::ops::ShrAssign<u32> for $id {
#[inline]
fn shr_assign(&mut self, other: u32) {
*self = *self >> other;
}
}
test_if!{
$test_tt:
paste::item! {
pub mod [<$id _ops_scalar_shifts>] {
use super::*;
#[cfg_attr(not(target_arch = "wasm32"), test)] #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
#[cfg_attr(any(target_arch = "s390x", target_arch = "sparc64"),
allow(unreachable_code,
unused_variables,
unused_mut)
)]
fn ops_scalar_shifts() {
let z = $id::splat(0 as $elem_ty);
let o = $id::splat(1 as $elem_ty);
let t = $id::splat(2 as $elem_ty);
let f = $id::splat(4 as $elem_ty);
{
let zi = 0 as u32;
let oi = 1 as u32;
let ti = 2 as u32;
let maxi
= (mem::size_of::<$elem_ty>() * 8 - 1) as u32;
assert_eq!(z >> zi, z);
assert_eq!(z >> oi, z);
assert_eq!(z >> ti, z);
assert_eq!(z >> ti, z);
#[cfg(any(target_arch = "s390x", target_arch = "sparc64"))] {
return;
}
assert_eq!(o >> zi, o);
assert_eq!(t >> zi, t);
assert_eq!(f >> zi, f);
assert_eq!(f >> maxi, z);
assert_eq!(o >> oi, z);
assert_eq!(t >> oi, o);
assert_eq!(t >> ti, z);
assert_eq!(f >> oi, t);
assert_eq!(f >> ti, o);
assert_eq!(f >> maxi, z);
assert_eq!(z << zi, z);
assert_eq!(o << zi, o);
assert_eq!(t << zi, t);
assert_eq!(f << zi, f);
assert_eq!(f << maxi, z);
assert_eq!(o << oi, t);
assert_eq!(o << ti, f);
assert_eq!(t << oi, f);
{
let mut v = o;
v >>= oi;
assert_eq!(v, z);
}
{
let mut v = o;
v <<= oi;
assert_eq!(v, t);
}
}
}
}
}
}
};
}