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add vec_nabs

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Folkert de Vries 2025-02-22 19:40:02 +01:00 • committed by Amanieu d'Antras
parent b84a33dd10
commit 4c48771da2
2 changed files with 41 additions and 2 deletions
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3
library/stdarch/crates/core_arch/src/s390x/macros.rs
View file

@ -436,8 +436,7 @@ macro_rules! impl_neg {
impl crate::ops::Neg for s_t_l!($s) {
type Output = s_t_l!($s);
fn neg(self) -> Self::Output {
let zero = $s::splat($zero);
unsafe { transmute(simd_sub(zero, transmute(self))) }
unsafe { simd_neg(self) }
}
}
};

40
library/stdarch/crates/core_arch/src/s390x/vector.rs
View file

@ -506,6 +506,31 @@ mod sealed {
impl_vec_trait! { [VectorAbs vec_abs] vec_abs_f32 (vector_float) }
impl_vec_trait! { [VectorAbs vec_abs] vec_abs_f64 (vector_double) }
#[unstable(feature = "stdarch_s390x", issue = "135681")]
pub trait VectorNabs {
unsafe fn vec_nabs(self) -> Self;
}
#[inline]
#[target_feature(enable = "vector")]
#[cfg_attr(
all(test, target_feature = "vector-enhancements-1"),
assert_instr(vflnsb)
)]
unsafe fn vec_nabs_f32(a: vector_float) -> vector_float {
simd_neg(simd_fabs(a))
}
#[inline]
#[target_feature(enable = "vector")]
#[cfg_attr(test, assert_instr(vflndb))]
unsafe fn vec_nabs_f64(a: vector_double) -> vector_double {
simd_neg(simd_fabs(a))
}
impl_vec_trait! { [VectorNabs vec_nabs] vec_nabs_f32 (vector_float) }
impl_vec_trait! { [VectorNabs vec_nabs] vec_nabs_f64 (vector_double) }
#[unstable(feature = "stdarch_s390x", issue = "135681")]
pub trait VectorSplats<Output> {
unsafe fn vec_splats(self) -> Output;
@ -1528,6 +1553,17 @@ where
a.vec_abs()
}
/// Vector negative abs.
#[inline]
#[target_feature(enable = "vector")]
#[unstable(feature = "stdarch_s390x", issue = "135681")]
pub unsafe fn vec_nabs<T>(a: T) -> T
where
T: sealed::VectorNabs,
{
a.vec_nabs()
}
/// Vector splats.
#[inline]
#[target_feature(enable = "vector")]
@ -2351,6 +2387,10 @@ mod tests {
test_vec_abs! { test_vec_abs_f32, f32x4, -42f32, 42f32 }
test_vec_abs! { test_vec_abs_f64, f64x2, -42f64, 42f64 }
test_vec_1! { test_vec_nabs, vec_nabs, f32x4,
[core::f32::consts::PI, 1.0, 0.0, -1.0],
[-core::f32::consts::PI, -1.0, 0.0, -1.0] }
test_vec_2! { test_vec_andc, vec_andc, i32x4,
[0b11001100, 0b11001100, 0b11001100, 0b11001100],
[0b00110011, 0b11110011, 0b00001100, 0b10000000],