Logical Intrinsics

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

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

__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

__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

__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

__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