Function core::arch::x86::_mm512_mask_inserti64x4

pub unsafe fn _mm512_mask_inserti64x4(
    src: __m512i, 
    k: __mmask8, 
    a: __m512i, 
    b: __m256i, 
    const IMM8: i32
) -> __m512i

🔬 This is a nightly-only experimental API. (stdsimd #48556)

This is supported on x86 and target feature avx512f only.

Copy a to tmp, then insert 256 bits (composed of 4 packed 64-bit integers) from b into tmp at the location specified by imm8. Store tmp to dst using writemask k (elements are copied from src when the corresponding mask bit is not set).

Intel’s documentation