# Function core::arch::x86_64::_mm_fnmsub_ss

1.27.0 · source ·

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

Available on (x86 or x86-64) and target feature `fma` only.
Expand description

Multiplies the lower single-precision (32-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 3 upper elements from `a` to the upper elements of the result.

Intel’s documentation