pub unsafe fn _mm256_mask_fmaddsub_pd(
    a: __m256d,
    k: u8,
    b: __m256d,
    c: __m256d
) -> __m256d
🔬 This is a nightly-only experimental API. (stdsimd)
This is supported on x86-64 and target feature avx512f,avx512vl only.
Expand description

Multiply packed double-precision (64-bit) floating-point elements in a and b, alternatively add and subtract packed elements in c to/from the intermediate result, and store the results in dst using writemask k (elements are copied from a when the corresponding mask bit is not set).

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