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

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

将 b 中较低的双精度 (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,将结果存储在 dst 的低位元素中,并将高位元素从 a 复制到 dst 的上层元素。本质上,此内联函数计算下部元素的 floor(log2(x))。

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