Function _mm_cmpunord_ps

pub unsafe fn _mm_cmpunord_ps(a: __m128, b: __m128) -> __m128

Available on x86 only.

Compares each of the four floats in a to the corresponding element in b. Returns four floats that have one of two possible bit patterns. The element in the output vector will be 0xffffffff if the input elements in a and b are unordered (i.e., at least on of them is a NaN), or 0 otherwise.

Intel’s documentation