# 1.27.0[−][src]Function core::arch::x86_64::_mm_fnmsub_sd

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

This is supported on x86-64 and target feature `fma` only.

Multiplies 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.

Intel's documentation