pub unsafe fn _mm512_cmpunord_pd_mask(a: __m512d, b: __m512d) -> __mmask8
🔬This is a nightly-only experimental API. (stdsimd #48556)
Available on (x86 or x86-64) and target feature avx512f and x86-64 only.
Expand description

比较包装的双精度 (64-bit) 浮点数 a 和 b 中的元素是否为 NaN,结果存入 mask vector k.

Intel’s documentation