Function core::arch::x86::_mm256_fmsubadd_pd

pub unsafe fn _mm256_fmsubadd_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 subtract and add packed elements in c from/to the intermediate result.

Intel’s documentation