#[repr(simd)]pub struct __m512d(_, _, _, _, _, _, _, _);
🔬This is a nightly-only experimental API. (
stdsimd
#48556)Available on x86-64 and (x86 or x86-64) only.
Expand description
512-bit wide set of eight f64
types, x86-specific
This type is the same as the __m512d
type defined by Intel,
representing a 512-bit SIMD register which internally is consisted of
eight packed f64
instances. Usage of this type typically corresponds
to the avx
and up target features for x86/x86_64.
Note that unlike __m512i
, the integer version of the 512-bit
registers, this __m512d
type has one interpretation. Each instance
of __m512d
always corresponds to f64x4
, or eight f64
types packed
together.
Most intrinsics using __m512d
are prefixed with _mm512_
and are
suffixed with “pd” (or otherwise contain “pd”). Not to be confused with
“ps” which is used for __m512
.