Intel® C++ Compiler Classic Developer Guide and Reference

ID 767249
Date 7/13/2023
Public
Document Table of Contents

Intrinsics for Integer Subtraction Operations

The prototypes for Intel® Advanced Vector Extensions 512 (Intel® AVX-512) intrinsics are located in the zmmintrin.h header file.

To use these intrinsics, include the immintrin.h file as follows:

#include <immintrin.h>


Intrinsic Name

Operation

Corresponding
Intel® AVX-512 Instruction

_mm512_sub_epi32, _mm512_maskz_sub_epi32

Subtracts int32 elements.

VPSUBD

_mm512_sub_epi64, _mm512_mask_sub_epi64, _mm512_maskz_sub_epi64

Subtracts int64 elements.

VPSUBQ


variable definition
k

writemask used as a selector

a

first source vector element

b

second source vector element

src

source element to use based on writemask result


_mm512_sub_epi32

extern __m512i __cdecl _mm512_sub_epi32(__m512i a, __m512i b);

Subtracts packed 32-bit integers in b from packed 32-bit integers in a, and stores the result.


_mm512_maskz_sub_epi32

extern __m512i __cdecl _mm512_maskz_sub_epi32(__mmask16 k, __m512i a, __m512i b);

Subtracts packed 32-bit integers in b from packed 32-bit integers in a, and stores the result using zeromask k (elements are zeroed out when the corresponding mask bit is not set).



_mm512_sub_epi64

extern __m512i __cdecl _mm512_sub_epi64(__m512i a, __m512i b);

Subtracts packed 64-bit integers in b from packed 64-bit integers in a, and stores the result.


_mm512_mask_sub_epi64

extern __m512i __cdecl _mm512_mask_sub_epi64(__m512i src, __mmask8 k, __m512i a, __m512i b);

Subtracts packed 64-bit integers in b from packed 64-bit integers in a, and stores the result using writemask k (elements are copied from src when the corresponding mask bit is not set).


_mm512_maskz_sub_epi64

extern __m512i __cdecl _mm512_maskz_sub_epi64(__mmask8 k, __m512i a, __m512i b);

Subtracts packed 64-bit integers in b from packed 64-bit integers in a, and stores the result using zeromask k (elements are zeroed out when the corresponding mask bit is not set).