arch:: x86_64:: _mm_fnmadd_sd
pub unsafe fn _mm_fnmadd_sd(a: __m128d, b: __m128d, c: __m128d) -> __m128d
Multiplies the lower double-precision (64-bit) floating-point elements in
b, and add the negated intermediate result to the lower element
c. 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.