_mm512_mask_fmsubadd_round_ph
Classification
AVX-512, Arithmetic, CPUID Test: AVX512_FP16
Header File
immintrin.h
Instruction
VFMSUBADD132PH zmm {k}, zmm, zmm {er}
Synopsis
 _mm512_mask_fmsubadd_round_ph(__m512h a, __mmask32 k, __m512h b, __m512h c, const int rounding);
Description
Multiply packed half-precision (16-bit) floating-point elements in "a" and "b", alternatively subtract and add packed elements in "c" to/from the intermediate result, and store the results in "dst" using writemask "k" (elements are copied from "a" when the corresponding mask bit is not set). [round_note]
Operation
FOR j := 0 to 31
	IF k[j]
		IF ((j & 1) == 0)
			dst.fp16[j] := (a.fp16[j] * b.fp16[j]) + c.fp16[j]
		ELSE
			dst.fp16[j] := (a.fp16[j] * b.fp16[j]) - c.fp16[j]
		FI
	ELSE
		dst.fp16[j] := a.fp16[j]
	FI
ENDFOR
dst[MAX:512] := 0