# Function core::arch::x86_64::_mm_mask_add_ss[−][src]

    pub unsafe fn _mm_mask_add_ss(
        src: __m128,
        k: __mmask8,
        a: __m128,
        b: __m128
    ) -> __m128

🔬 This is a nightly-only experimental API. (`stdsimd` #48556)
This is supported on x86-64 and target feature `avx512f` only.

Add 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.

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