pub unsafe fn _mm_mask_mul_ss(
    src: __m128,
    k: u8,
    a: __m128,
    b: __m128
) -> __m128
🔬This is a nightly-only experimental API. (stdsimd)
Available on x86-64 only.
Expand description

Multiply the lower single-precision (32-bit) floating-point element in a and b, store the result in the lower element of dst using writemask k (the element is copied from src when mask bit 0 is not set), and copy the upper 3 packed elements from a to the upper elements of dst.

Intel’s documentation