pub unsafe fn _mm_mask3_fmaddsub_ps(
    a: __m128,
    b: __m128,
    c: __m128,
    k: __mmask8
) -> __m128
🔬This is a nightly-only experimental API. (stdsimd #48556)
Available on (x86 or x86-64) and target feature avx512f,avx512vl only.
Expand description

Multiply packed single-precision (32-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 c when the corresponding mask bit is not set).

Intel’s documentation