Intel® C++ Compiler Classic Developer Guide and Reference

ID 767249
Date 12/16/2022
Public

A newer version of this document is available. Customers should click here to go to the newest version.

Document Table of Contents

Logical Intrinsics

Intel® Streaming SIMD Extensions 2 (Intel® SSE2) intrinsics for integer logical operations are listed in this topic. The prototypes for Intel® SSE2 intrinsics are in the emmintrin.h header file.

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

#include <immintrin.h>

The results of each intrinsic operation are placed in register R. The information about what is placed in each register appears in the tables below, in the detailed explanation of each intrinsic.

Intrinsic Name

Operation

Corresponding
Intel® SSE2 Instruction

_mm_and_si128

Computes AND

PAND

_mm_andnot_si128

Computes AND and NOT

PANDN

_mm_or_si128

Computes OR

POR

_mm_xor_si128

Computes XOR

PXOR

_mm_and_si128

__m128i _mm_and_si128(__m128i a, __m128i b);

Computes the bitwise AND of the 128-bit value in a and the 128-bit value in b.

R0

a & b

_mm_andnot_si128

__m128i _mm_andnot_si128(__m128i a, __m128i b);

Computes the bitwise AND of the 128-bit value in b and the bitwise NOT of the 128-bit value in a.

R0

(~a) & b

_mm_or_si128

__m128i _mm_or_si128(__m128i a, __m128i b);

Computes the bitwise OR of the 128-bit value in a and the 128-bit value in b.

R0

a | b

_mm_xor_si128

__m128i _mm_xor_si128(__m128i a, __m128i b);

Computes the bitwise XOR of the 128-bit value in a and the 128-bit value in b.

R0

a ^ b