pub unsafe fn _mm_mask3_fmsubadd_pd(
    a: __m128d,
    b: __m128d,
    c: __m128d,
    k: __mmask8
) -> __m128d
🔬 This is a nightly-only experimental API. (stdsimd #48556)
Available on x86 and target feature avx512f,avx512vl only.
Expand description

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

Intel’s documentation