core::arch::x86

Function _mm256_mask_insertf64x2

Source 
pub unsafe fn _mm256_mask_insertf64x2(
    src: __m256d,
    k: __mmask8,
    a: __m256d,
    b: __m128d,
    const IMM8: i32,
) -> __m256d
🔬This is a nightly-only experimental API. (stdarch_x86_avx512 #111137)
Available on (x86 or x86-64) and target feature avx512dq,avx512vl and x86 only.
Expand description

Copy a to tmp, then insert 128 bits (composed of 2 packed double-precision (64-bit) floating-point elements) from b into tmp at the location specified by IMM8, and copy tmp to dst using writemask k (elements are copied from src if the corresponding bit is not set).

Intel’s Documentation