Function _mm_cmp_sd

pub unsafe fn _mm_cmp_sd<const IMM5: i32>(a: __m128d, b: __m128d) -> __m128d

Available on x86-64 only.

Compares the lower double-precision (64-bit) floating-point element in a and b based on the comparison operand specified by IMM5, store the result in the lower element of returned vector, and copies the upper element from a to the upper element of returned vector.

Intel’s documentation