# Function core::arch::x86::_mm_fnmadd_sd
1.27.0[−][src]

    pub unsafe fn _mm_fnmadd_sd(a: __m128d, b: __m128d, c: __m128d) -> __m128d

This is supported on x86 and target feature `fma` only.

Multiplies the lower double-precision (64-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 upper element from `a` to the upper elements of the result.

Intel’s documentation