Function core::arch::x86_64::_mm_cmpunord_sd

pub unsafe fn _mm_cmpunord_sd(a: __m128d, b: __m128d) -> __m128d

This is supported on x86-64 and target feature sse2 only.

Returns a new vector with the low element of a replaced by the result of comparing both of the lower elements of a and b to NaN. If either is equal to NaN then 0xFFFFFFFFFFFFFFFF is used and 0 otherwise.

Intel’s documentation