#[repr(simd)]pub struct __m128d(/* private fields */);
Available on x86-64 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);
Trait Implementations§
impl Copy for __m128d
Auto Trait Implementations§
impl Freeze for __m128d
impl RefUnwindSafe for __m128d
impl Send for __m128d
impl Sync for __m128d
impl Unpin for __m128d
impl UnwindSafe for __m128d
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§default unsafe fn clone_to_uninit(&self, dst: *mut T)
default unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)source§impl<T> CloneToUninit for Twhere
T: Copy,
impl<T> CloneToUninit for Twhere
T: Copy,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)source§impl<T> MakeSized for Twhere
T: ?Sized,
impl<T> MakeSized for Twhere
T: ?Sized,
source§fn make_sized(&self) -> Box<T>
fn make_sized(&self) -> Box<T>
logic ⚠
ensures
*result == *self