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

    pub unsafe fn _mm_mask_cmp_sd_mask(
        m: __mmask8,
        a: __m128d,
        b: __m128d,
        op: i32
    ) -> __mmask8

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

Compare the lower single-precision (32-bit) floating-point element in a and b based on the comparison operand specified by imm8, and store the result in a mask vector using zeromask m (the element is zeroed out when mask bit 0 is not set).

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