Function _mm256_fmsubadd_pd

pub unsafe fn _mm256_fmsubadd_pd(a: __m256d, b: __m256d, c: __m256d) -> __m256d

Available on (x86 or x86-64) and target feature fma and x86-64 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.

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