Arithmetic Intrinsics

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

The results of each intrinsic operation are placed in a register. The information about what is placed in each register appears in the tables below, in the detailed explanation for each intrinsic. For each intrinsic, the resulting register is represented by R0 and R1, where R0 and R1 each represent one piece of the result register.

Intrinsic Name	Operation	Corresponding Intel® SSE2 Instruction
_mm_add_sd	Addition	ADDSD
_mm_add_pd	Addition	ADDPD
_mm_sub_sd	Subtraction	SUBSD
_mm_sub_pd	Subtraction	SUBPD
_mm_mul_sd	Multiplication	MULSD
_mm_mul_pd	Multiplication	MULPD
_mm_div_sd	Division	DIVSD
_mm_div_pd	Division	DIVPD
_mm_sqrt_sd	Computes Square Root	SQRTSD
_mm_sqrt_pd	Computes Square Root	SQRTPD
_mm_min_sd	Computes Minimum	MINSD
_mm_min_pd	Computes Minimum	MINPD
_mm_max_sd	Computes Maximum	MAXSD
_mm_max_pd	Computes Maximum	MAXPD

__m128d _mm_add_sd(__m128d a, __m128d b)

Adds the lower DP FP (double-precision, floating-point) values of a and b ; the upper DP FP value is passed through from a.

R0	R1
a0 + b0	a1

__m128d _mm_add_pd(__m128d a, __m128d b)

Adds the two DP FP values of a and b.

R0	R1
a0 + b0	a1 + b1

__m128d _mm_sub_sd(__m128d a, __m128d b)

Subtracts the lower DP FP value of b from a. The upper DP FP value is passed through from a.

R0	R1
a0 - b0	a1

__m128d _mm_sub_pd(__m128d a, __m128d b)

Subtracts the two DP FP values of b from a.

R0	R1
a0 - b0	a1 - b1

__m128d _mm_mul_sd(__m128d a, __m128d b)

Multiplies the lower DP FP values of a and b. The upper DP FP is passed through from a.

R0	R1
a0 * b0	a1

__m128d _mm_mul_pd(__m128d a, __m128d b)

Multiplies the two DP FP values of a and b.

R0	R1
a0 * b0	a1 * b1

__m128d _mm_div_sd(__m128d a, __m128d b)

Divides the lower DP FP values of a and b. The upper DP FP value is passed through from a.

R0	R1
a0 / b0	a1

__m128d _mm_div_pd(__m128d a, __m128d b)

Divides the two DP FP values of a and b.

R0	R1
a0 / b0	a1 / b1

__m128d _mm_sqrt_sd(__m128d a, __m128d b)

Computes the square root of the lower DP FP value of b. The upper DP FP value is passed through from a.

R0	R1
sqrt(b0)	a1

__m128d _mm_sqrt_pd(__m128d a)

Computes the square roots of the two DP FP values of a.

R0	R1
sqrt(a0)	sqrt(a1)

__m128d _mm_min_sd(__m128d a, __m128d b)

Computes the minimum of the lower DP FP values of a and b. The upper DP FP value is passed through from a.

R0	R1
min (a0, b0)	a1

__m128d _mm_min_pd(__m128d a, __m128d b)

Computes the minima of the two DP FP values of a and b.

R0	R1
min (a0, b0)	min(a1, b1)

__m128d _mm_max_sd(__m128d a, __m128d b)

Computes the maximum of the lower DP FP values of a and b. The upper DP FP value is passed through from a.

R0	R1
max (a0, b0)	a1

__m128d _mm_max_pd(__m128d a, __m128d b)

Computes the maxima of the two DP FP values of a and b.

R0	R1
max (a0, b0)	max (a1, b1)