# Move Intrinsics

The Intel® Streaming SIMD Extensions 2 (Intel® SSE2) intrinsics for integer move 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 registers. The information about what is placed in each register appears in the tables below, in the detailed explanation of each intrinsic. R, R0, R1, R2 and R3 represent the registers in which results are placed.

Intrinsic Name | Operation | Corresponding Intel® SSE2 Instruction
--- | --- | ---
_mm_cvtsi32_si128 | Move and zero | MOVD
_mm_cvtsi64_si128 | Move and zero | MOVQ
_mm_cvtsi128_si32 | Move lowest 32 bits | MOVD
_mm_cvtsi128_si64 | Move lowest 64 bits | MOVQ

## _mm_cvtsi32_si128

__m128i _mm_cvtsi32_si128(int a);

Moves 32-bit integer a to the least significant 32 bits of an `__m128i` object. Zeroes the upper 96 bits of the `__m128i` object.

R0 | R1 | R2 | R3
--- | --- | --- | ---
a | 0x0 | 0x0 | 0x0

## _mm_cvtsi64_si128

__m128i _mm_cvtsi64_si128(__int64 a);

Moves 64-bit integer a to the lower 64 bits of an `__m128i` object, zeroing the upper bits.

R0 | R1
--- | ---
a | 0x0

## _mm_cvtsi128_si32

int _mm_cvtsi128_si32(__m128i a);

Moves the least significant 32 bits of a to a 32-bit integer.

R
a0

## _mm_cvtsi128_si64

__int64 _mm_cvtsi128_si64(__m128i a);

Moves the lower 64 bits of a to a 64-bit integer.

R
a0

Parent topic: Integer Intrinsics