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

pub unsafe fn _mm_mask_getexp_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

将 a 中每个包装的双精度 (64-bit) 浮点元素的指数转换为代表整数指数的双精度 (64-bit) 浮点数,并使用 writemask k 将结果存储在 dst 中 (当相应的 mask 时,元素从 src 复制位未设置)。本质上,此内联函数为每个元素计算 floor(log2(x))。

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