# 1.27.0[−][src]Function core::arch::x86::_mm256_fmaddsub_pd

    pub unsafe fn _mm256_fmaddsub_pd(a: __m256d, b: __m256d, c: __m256d) -> __m256d

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

Multiplies packed double-precision (64-bit) floating-point elements in `a` and `b`, and alternatively add and subtract packed elements in `c` to/from the intermediate result.

Intel's documentation