Function _mm_cmpunord_sd

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

Available on (x86 or x86-64) and target feature sse2 and x86-64 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.

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