_mm256_mask_fixupimm_ps
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512F
Header File
immintrin.h
Instruction
VFIXUPIMMPS ymm {k}, ymm, ymm, imm8
Synopsis
 _mm256_mask_fixupimm_ps(__m256 a, __mmask8 k, __m256 b, __m256i c, int imm8);
Description
Fix up packed single-precision (32-bit) floating-point elements in "a" and "b" using packed 32-bit integers in "c", and store the results in "dst" using writemask "k" (elements are copied from "a" when the corresponding mask bit is not set). "imm8" is used to set the required flags reporting.
Operation
enum TOKEN_TYPE {
	QNAN_TOKEN := 0, \
	SNAN_TOKEN := 1, \
	ZERO_VALUE_TOKEN := 2, \
	ONE_VALUE_TOKEN := 3, \
	NEG_INF_TOKEN := 4, \
	POS_INF_TOKEN := 5, \
	NEG_VALUE_TOKEN := 6, \
	POS_VALUE_TOKEN := 7
}
DEFINE FIXUPIMMPD(src1[31:0], src2[31:0], src3[31:0], imm8[7:0]) {
	tsrc[31:0] := ((src2[30:23] == 0) AND (MXCSR.DAZ == 1)) ? 0.0 : src2[31:0]
	CASE(tsrc[31:0]) OF
	QNAN_TOKEN:j := 0
	SNAN_TOKEN:j := 1
	ZERO_VALUE_TOKEN: j := 2
	ONE_VALUE_TOKEN: j := 3
	NEG_INF_TOKEN: j := 4
	POS_INF_TOKEN: j := 5
	NEG_VALUE_TOKEN: j := 6
	POS_VALUE_TOKEN: j := 7
	ESAC
	
	token_response[3:0] := src3[3+4*j:4*j]
	
	CASE(token_response[3:0]) OF
	0 : dest[31:0] := src1[31:0]
	1 : dest[31:0] := tsrc[31:0]
	2 : dest[31:0] := QNaN(tsrc[31:0])
	3 : dest[31:0] := QNAN_Indefinite
	4 : dest[31:0] := -INF
	5 : dest[31:0] := +INF
	6 : dest[31:0] := tsrc.sign? -INF : +INF
	7 : dest[31:0] := -0
	8 : dest[31:0] := +0
	9 : dest[31:0] := -1
	10: dest[31:0] := +1
	11: dest[31:0] := 1/2
	12: dest[31:0] := 90.0
	13: dest[31:0] := PI/2
	14: dest[31:0] := MAX_FLOAT
	15: dest[31:0] := -MAX_FLOAT
	ESAC
	
	CASE(tsrc[31:0]) OF
	ZERO_VALUE_TOKEN:
		IF (imm8[0]) #ZE; FI
	ZERO_VALUE_TOKEN:
		IF (imm8[1]) #IE; FI
	ONE_VALUE_TOKEN:
		IF (imm8[2]) #ZE; FI
	ONE_VALUE_TOKEN:
		IF (imm8[3]) #IE; FI
	SNAN_TOKEN:
		IF (imm8[4]) #IE; FI
	NEG_INF_TOKEN:
		IF (imm8[5]) #IE; FI
	NEG_VALUE_TOKEN:
		IF (imm8[6]) #IE; FI
	POS_INF_TOKEN:
		IF (imm8[7]) #IE; FI
	ESAC
	RETURN dest[31:0]
}
FOR j := 0 to 7
	i := j*32
	IF k[j]
		dst[i+31:i] := FIXUPIMMPD(a[i+31:i], b[i+31:i], c[i+31:i], imm8[7:0])
	ELSE
		dst[i+31:i] := a[i+31:i]
	FI
ENDFOR
dst[MAX:256] := 0