_mm256_maskz_fnmadd_ps
Classification
AVX-512, Arithmetic, CPUID Test: AVX512F
Header File
Instruction
VFNMADD132PS ymm {z}, ymm, ymm
Synopsis
_mm256_maskz_fnmadd_ps(__mmask8 k, __m256 a, __m256 b, __m256 c);
Description
Multiply packed single-precision (32-bit) floating-point elements in "a" and "b", add the negated intermediate result to packed elements in "c", and store the results in "dst" using zeromask "k" (elements are zeroed out when the corresponding mask bit is not set).
Operation
FOR j := 0 to 7
i := j*32
IF k[j]
dst[i+31:i] := -(a[i+31:i] * b[i+31:i]) + c[i+31:i]
ELSE
dst[i+31:i] := 0
FI
ENDFOR
dst[MAX:256] := 0