pub unsafe fn _mm512_mask_extractf64x4_pd<const IMM8: i32>(
    src: __m256d,
    k: u8,
    a: __m512d
) -> __m256d
🔬 This is a nightly-only experimental API. (stdsimd)
This is supported on x86-64 and target feature avx512f only.
Expand description

Extract 256 bits (composed of 4 packed double-precision (64-bit) floating-point elements) from a, selected with imm8, and store the results in dst using writemask k (elements are copied from src when the corresponding mask bit is not set).

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