#[repr(simd)]pub struct __m128(_, _, _, _);
Available on x86 only.
Expand description
128-bit wide set of four f32
types, x86-specific
This type is the same as the __m128
type defined by Intel,
representing a 128-bit SIMD register which internally is consisted of
four packed f32
instances. Usage of this type typically corresponds
to the sse
and up target features for x86/x86_64.
Note that unlike __m128i
, the integer version of the 128-bit
registers, this __m128
type has one interpretation. Each instance
of __m128
always corresponds to f32x4
, or four f32
types packed
together.
Most intrinsics using __m128
are prefixed with _mm_
and are
suffixed with “ps” (or otherwise contain “ps”). Not to be confused with
“pd” which is used for __m128d
.
Examples
#[cfg(target_arch = "x86")]
use std::arch::x86::*;
#[cfg(target_arch = "x86_64")]
use std::arch::x86_64::*;
let four_zeros = _mm_setzero_ps();
let four_ones = _mm_set1_ps(1.0);
let four_floats = _mm_set_ps(1.0, 2.0, 3.0, 4.0);
RunTrait Implementations
impl Copy for __m128
Available on x86 or x86-64 only.
Auto Trait Implementations
impl RefUnwindSafe for __m128
impl Send for __m128
impl Sync for __m128
impl Unpin for __m128
impl UnwindSafe for __m128
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more