# Function core::arch::x86_64::_mm_mask_sub_ss

source ·

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

🔬This is a nightly-only experimental API. (`stdarch_x86_avx512` #111137)
Available on (x86 or x86-64) and target feature `avx512f` and x86-64 only.
Expand description

Subtract the lower single-precision (32-bit) floating-point element in b from the lower single-precision (32-bit) floating-point element in a, 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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