#[repr(simd)]pub struct __m128d(_, _);
Available on x86 only.
Expand description
128-bit wide set of two f64
types, x86-specific
This type is the same as the __m128d
type defined by Intel,
representing a 128-bit SIMD register which internally is consisted of
two packed f64
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 __m128d
type has one interpretation. Each instance
of __m128d
always corresponds to f64x2
, or two f64
types packed
together.
Most intrinsics using __m128d
are prefixed with _mm_
and are
suffixed with “pd” (or otherwise contain “pd”). Not to be confused with
“ps” which is used for __m128
.
Examples
#[cfg(target_arch = "x86")]
use std::arch::x86::*;
#[cfg(target_arch = "x86_64")]
use std::arch::x86_64::*;
let two_zeros = _mm_setzero_pd();
let two_ones = _mm_set1_pd(1.0);
let two_floats = _mm_set_pd(1.0, 2.0);
RunTrait Implementations
impl Copy for __m128d
Available on x86 or x86-64 only.
Auto Trait Implementations
impl RefUnwindSafe for __m128d
impl Send for __m128d
impl Sync for __m128d
impl Unpin for __m128d
impl UnwindSafe for __m128d
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