Function _mm_fnmsub_sd
#[target_feature(enable = "fma")]
pub const fn _mm_fnmsub_sd(a: __m128d, b: __m128d, c: __m128d) -> __m128dMultiplies the lower double-precision (64-bit) floating-point elements in
a and b, and subtract packed elements in c from the negated
intermediate result. Store the result in the lower element of the returned
value, and copy the upper element from a to the upper elements of the
result.