_mm256_fnmsub_pd
Classification
AVX_ALL, Arithmetic, CPUID Test: FMA
Header File
Instruction
VFNMSUB132PD ymm, ymm, ymm
Synopsis
_mm256_fnmsub_pd(__m256d a, __m256d b, __m256d c);
Description
Multiply packed double-precision (64-bit) floating-point elements in "a" and "b", subtract packed elements in "c" from the negated intermediate result, and store the results in "dst".
Operation
FOR j := 0 to 3
i := j*64
dst[i+63:i] := -(a[i+63:i] * b[i+63:i]) - c[i+63:i]
ENDFOR
dst[MAX:256] := 0