Function _mm_fnmadd_ss
#[target_feature(enable = "fma")]
pub const fn _mm_fnmadd_ss(a: __m128, b: __m128, c: __m128) -> __m128Multiplies the lower single-precision (32-bit) floating-point elements in
a and b, and add the negated intermediate result to the lower element
in c. Store the result in the lower element of the returned value, and
copy the 3 upper elements from a to the upper elements of the result.