Function core::arch::x86_64::_mm_mask_rsqrt14_pd[][src]

pub unsafe fn _mm_mask_rsqrt14_pd(
    src: __m128d,
    k: __mmask8,
    a: __m128d
) -> __m128d
🔬 This is a nightly-only experimental API. (stdsimd #48556)
This is supported on x86-64 and target feature avx512f,avx512vl only.
Expand description

计算 a 中包装的双精度 (64-bit) 浮点元素的近似倒数平方根,并使用写掩码 k 将结果存储在 dst 中 (当未设置相应的掩码位时从 src 复制元素)。该近似值的最大相对误差小于 2^-14。

Intel’s documentation