Opcode/Instruction | Op/En | 64/32 Bit Mode Support | CPUID Feature Flag | Description |
---|---|---|---|---|
EVEX.128.0F.W0 78 /r VCVTTPS2UDQ xmm1 {k1}{z}, xmm2/m128/m32bcst | A | V/V | AVX512VL AVX512F | Convert four packed single precision floating-point values from xmm2/m128/m32bcst to four packed unsigned doubleword values in xmm1 using truncation subject to writemask k1. |
EVEX.256.0F.W0 78 /r VCVTTPS2UDQ ymm1 {k1}{z}, ymm2/m256/m32bcst | A | V/V | AVX512VL AVX512F | Convert eight packed single precision floating-point values from ymm2/m256/m32bcst to eight packed unsigned doubleword values in ymm1 using truncation subject to writemask k1. |
EVEX.512.0F.W0 78 /r VCVTTPS2UDQ zmm1 {k1}{z}, zmm2/m512/m32bcst{sae} | A | V/V | AVX512F | Convert sixteen packed single precision floating-point values from zmm2/m512/m32bcst to sixteen packed unsigned doubleword values in zmm1 using truncation subject to writemask k1. |
Op/En | Tuple Type | Operand 1 | Operand 2 | Operand 3 | Operand 4 |
---|---|---|---|---|---|
A | Full | ModRM:reg (w) | ModRM:r/m (r) | N/A | N/A |
Converts with truncation packed single precision floating-point values in the source operand to sixteen unsigned doubleword integers in the destination operand.
When a conversion is inexact, a truncated (round toward zero) value is returned. If a converted result cannot be represented in the destination format, the floating-point invalid exception is raised, and if this exception is masked, the integer value 2w – 1 is returned, where w represents the number of bits in the destination format.
EVEX encoded versions: The source operand is a ZMM/YMM/XMM register, a 512/256/128-bit memory location or a 512/256/128-bit vector broadcasted from a 32-bit memory location. The destination operand is a ZMM/YMM/XMM register conditionally updated with writemask k1.
Note: EVEX.vvvv is reserved and must be 1111b otherwise instructions will #UD.
(KL, VL) = (4, 128), (8, 256), (16, 512) FOR j := 0 TO KL-1 i := j * 32 IF k1[j] OR *no writemask* THEN DEST[i+31:i] := Convert_Single_Precision_Floating_Point_To_UInteger_Truncate(SRC[i+31:i]) ELSE IF *merging-masking* ; merging-masking THEN *DEST[i+31:i] remains unchanged* ELSE ; zeroing-masking DEST[i+31:i] := 0 FI FI; ENDFOR DEST[MAXVL-1:VL] := 0
(KL, VL) = (4, 128), (8, 256), (16, 512) FOR j := 0 TO KL-1 i := j * 32 IF k1[j] OR *no writemask* THEN IF (EVEX.b = 1) THEN DEST[i+31:i] := Convert_Single_Precision_Floating_Point_To_UInteger_Truncate(SRC[31:0]) ELSE DEST[i+31:i] := Convert_Single_Precision_Floating_Point_To_UInteger_Truncate(SRC[i+31:i]) FI; ELSE IF *merging-masking* ; merging-masking THEN *DEST[i+31:i] remains unchanged* ELSE ; zeroing-masking DEST[i+31:i] := 0 FI FI; ENDFOR DEST[MAXVL-1:VL] := 0
VCVTTPS2UDQ __m512i _mm512_cvttps_epu32( __m512 a);
VCVTTPS2UDQ __m512i _mm512_mask_cvttps_epu32( __m512i s, __mmask16 k, __m512 a);
VCVTTPS2UDQ __m512i _mm512_maskz_cvttps_epu32( __mmask16 k, __m512 a);
VCVTTPS2UDQ __m512i _mm512_cvtt_roundps_epu32( __m512 a, int sae);
VCVTTPS2UDQ __m512i _mm512_mask_cvtt_roundps_epu32( __m512i s, __mmask16 k, __m512 a, int sae);
VCVTTPS2UDQ __m512i _mm512_maskz_cvtt_roundps_epu32( __mmask16 k, __m512 a, int sae);
VCVTTPS2UDQ __m256i _mm256_mask_cvttps_epu32( __m256i s, __mmask8 k, __m256 a);
VCVTTPS2UDQ __m256i _mm256_maskz_cvttps_epu32( __mmask8 k, __m256 a);
VCVTTPS2UDQ __m128i _mm_mask_cvttps_epu32( __m128i s, __mmask8 k, __m128 a);
VCVTTPS2UDQ __m128i _mm_maskz_cvttps_epu32( __mmask8 k, __m128 a);
Invalid, Precision.
EVEX-encoded instructions, see Table 2-46, “Type E2 Class Exception Conditions.”
Additionally:
#UD | If EVEX.vvvv != 1111B. |