Intel® C++ Compiler Classic Developer Guide and Reference

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

Logical Intrinsics

The prototypes for Intel® Streaming SIMD Extensions (Intel® SSE) intrinsics for logical operations are in the xmmintrin.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 a register. This register is illustrated for each intrinsic with R0-R3. R0, R1, R2, and R3 each represent one of the four 32-bit pieces of the result register.

Intrinsic Name

Operation

Corresponding
Intel® SSE Instruction

_mm_and_ps

Bitwise AND

ANDPS

_mm_andnot_ps

Bitwise ANDNOT

ANDNPS

_mm_or_ps

Bitwise OR

ORPS

_mm_xor_ps

Bitwise Exclusive OR

XORPS

_mm_and_ps

__m128 _mm_and_ps(__m128 a, __m128 b);

Computes the bitwise AND of the four SP FP values of a and b.

R0

R1

R2

R3

a0 & b0

a1 & b1

a2 & b2

a3 & b3

_mm_andnot_ps

__m128 _mm_andnot_ps(__m128 a, __m128 b);

Computes the bitwise AND-NOT of the four SP FP values of a and b.

R0

R1

R2

R3

~a0 & b0

~a1 & b1

~a2 & b2

~a3 & b3

_mm_or_ps

__m128 _mm_or_ps(__m128 a, __m128 b);

Computes the bitwise OR of the four SP FP values of a and b.

R0

R1

R2

R3

a0 | b0

a1 | b1

a2 | b2

a3 | b3

_mm_xor_ps

__m128 _mm_xor_ps(__m128 a, __m128 b);

Computes bitwise XOR (exclusive-or) of the four SP FP values of a and b.

R0

R1

R2

R3

a0 ^ b0

a1 ^ b1

a2 ^ b2

a3 ^ b3