Floating-point Store Operations for Streaming SIMD Extensions 2

The following store operation intrinsics and their respective instructions are functional in the Streaming SIMD Extensions 2 (SSE2).

The store operations assign the initialized data to the address.

For detailed information about an intrinsic, click on that intrinsic name in the following table.

The detailed description of each intrinsic contains a table detailing the returns. In these tables, dp[n] is an access to the n element of the result.

The prototypes for SSE2 intrinsics are in the emmintrin.h header file.

The Double Complex code sample contains example of how to use the _mm_store_pd intrinsic.

Intrinsic Name	Operation	Corresponding SSE2 Instruction
_mm_stream_pd	Store	MOVNTPD
_mm_store_sd	Stores lower DP FP value of a	MOVSD
_mm_store1_pd	Stores lower DP FP value of a twice	MOVAPD + shuffling
_mm_store_pd	Stores two DP FP values	MOVAPD
_mm_storeu_pd	Stores two DP FP values	MOVUPD
_mm_storer_pd	Stores two DP FP values in reverse order	MOVAPD + shuffling
_mm_storeh_pd	Stores upper DP FP value of a	MOVHPD
_mm_storel_pd	Stores lower DP FP value of a	MOVLPD

void _mm_store_sd(double *dp, __m128d a)

Stores the lower DP FP value of a. The address dp need not be 16-byte aligned.

*dp
a0

void _mm_store1_pd(double *dp, __m128d a)

Stores the lower DP FP value of a twice. The address dp must be 16-byte aligned.

dp[0]	dp[1]
a0	a0

void _mm_store_pd(double *dp, __m128d a)

Stores two DP FP values. The address dp must be 16-byte aligned.

dp[0]	dp[1]
a0	a1

void _mm_storeu_pd(double *dp, __m128d a)

Stores two DP FP values. The address dp need not be 16-byte aligned.

dp[0]	dp[1]
a0	a1

void _mm_storer_pd(double *dp, __m128d a)

Stores two DP FP values in reverse order. The address dp must be 16-byte aligned.

dp[0]	dp[1]
a1	a0

void _mm_storeh_pd(double *dp, __m128d a)

Stores the upper DP FP value of a.

*dp
a1

void _mm_storel_pd(double *dp, __m128d a)

Stores the lower DP FP value of a.

*dp
a0