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Arithmetic Operations

Microsoft Specific

The intrinsics listed in the following table are followed by a description of each intrinsic.

Packed Arithmetic Intrinsics

Intrinsic Instruction Operation R0 R1 R2 R3
_mm_add_ss ADDSS Adds
a0 [op] b0
a1
a2
a3
_mm_add_ps ADDPS Adds
a0 [op] b0
a1 [op] b1
a2 [op] b2
a3 [op] b3
_mm_sub_ss SUBSS Subtracts
a0 [op] b0
a1
a2
a3
_mm_sub_ps SUBPS Subtracts
a0 [op] b0
a1 [op] b1
a2 [op] b2
a3 [op] b3
_mm_mul_ss MULSS Multiplies
a0 [op] b0
a1
a2
a3
_mm_mul_ps MULPS Multiplies
a0 [op] b0
a1 [op] b1
a2 [op] b2
a3 [op] b3
_mm_div_ss DIVSS Divides
a0 [op] b0
a1
a2
a3
_mm_div_ps DIVPS Divides
a0 [op] b0
a1 [op] b1
a2 [op] b2
a3 [op] b3
_mm_sqrt_ss SQRTSS Computes squared root
[op] a0
a1
a2
a3
_mm_sqrt_ps SQRTPS Computes squared root
[op] a0
[op] b1
[op] b2
[op] b3
_mm_rcp_ss RCPSS Computes reciprocal
[op] a0
a1
a2
a3
_mm_rcp_ps RCPPS Computes reciprocal
[op] a0
[op] b1
[op] b2
[op] b3
_mm_rsqrt_ss RSQRTSS Computes reciprocal square root
[op] a0
a1
a2
a3
_mm_rsqrt_ps RSQRTPS Computes reciprocal squared root
[op] a0
[op] b1
[op] b2
[op] b3
_mm_min_ss MINSS Computes minimum
[op]( a0,b0)
a1
a2
a3
_mm_min_ps MINPS Computes minimum
[op]( a0,b0)
[op] (a1, b1)
[op] (a2, b2)
[op] (a3, b3)
_mm_max_ss MAXSS Computes maximum
[op]( a0,b0)
a1
a2
a3
_mm_max_ps MAXPS Computes maximum
[op]( a0,b0)
[op] (a1, b1)
[op] (a2, b2)
[op] (a3, b3)

For an explanation of the syntax used in code samples in this topic, see Floating-Point Intrinsics Using Streaming SIMD Extensions.

__m128 _mm_add_ss(__m128 a , __m128 b )

ADDSS

Adds the lower single-precision, floating-point values of a and b; the upper three single-precision, floating-point values are passed through from a.

r0 := a0 + b0
r1 := a1 ; r2 := a2 ; r3 := a3

__m128 _mm_add_ps(__m128 a , __m128 b );

ADDPS

Adds the four single-precision, floating-point values of a and b.

r0 := a0 + b0
r1 := a1 + b1
r2 := a2 + b2
r3 := a3 + b3

__m128 _mm_sub_ss(__m128 a , __m128 b );

SUBSS

Subtracts the lower single-precision, floating-point values of a and b. The upper three single-precision, floating-point values are passed through from a.

r0 := a0 - b0
r1 := a1 ; r2 := a2 ; r3 := a3

__m128 _mm_sub_ps(__m128 a , __m128 b );

SUBPS

Subtracts the four single-precision, floating-point values of a and b.

r0 := a0 - b0
r1 := a1 - b1
r2 := a2 - b2
r3 := a3 - b3

__m128 _mm_mul_ss(__m128 a , __m128 b );

MULSS

Multiplies the lower single-precision, floating-point values of a and b; the upper three single-precision, floating-point values are passed through from a.

r0 := a0 * b0
r1 := a1 ; r2 := a2 ; r3 := a3

__m128 _mm_mul_ps(__m128 a , __m128 b );

MULPS

Multiplies the four single-precision, floating-point values of a and b.

r0 := a0 * b0
r1 := a1 * b1
r2 := a2 * b2
r3 := a3 * b3

__m128 _mm_div_ss(__m128 a , __m128 b );

DIVSS

Divides the lower single-precision, floating-point values of a and b; the upper three single-precision, floating-point values are passed through from a.

r0 := a0 / b0
r1 := a1 ; r2 := a2 ; r3 := a3

__m128 _mm_div_ps(__m128 a, __m128 b );

DIVPS

Divides the four single-precision, floating-point values of a and b.

r0 := a0 / b0
r1 := a1 / b1
r2 := a2 / b2
r3 := a3 / b3

__m128 _mm_sqrt_ss(__m128 a );

SQRTSS

Computes the square root of the lower single-precision, floating-point value of a; the upper three single-precision, floating-point values are passed through.

r0 := sqrt(a0)
r1 := a1 ; r2 := a2 ; r3 := a3

__m128 _mm_sqrt_ps(__m128 a );

SQRTPS

Computes the square roots of the four single-precision, floating-point values of a.

r0 := sqrt(a0)
r1 := sqrt(a1)
r2 := sqrt(a2)
r3 := sqrt(a3)

__m128 _mm_rcp_ss(__m128 a );

RCPSS

Computes the approximation of the reciprocal of the lower single-precision, floating-point value of a; the upper three single-precision, floating-point values are passed through.

r0 := recip(a0)
r1 := a1 ; r2 := a2 ; r3 := a3

__m128 _mm_rcp_ps(__m128 a );

RCPPS

Computes the approximations of reciprocals of the four single-precision, floating-point values of a.

r0 := recip(a0)
r1 := recip(a1)
r2 := recip(a2)
r3 := recip(a3)

__m128 _mm_rsqrt_ss(__m128 a );

RSQRTSS

Computes the approximation of the reciprocal of the square root of the lower single-precision, floating-point value of a; the upper three single-precision, floating-point values are passed through.

r0 := recip(sqrt(a0))
r1 := a1 ; r2 := a2 ; r3 := a3

__mm128 _mm_rsqrt_ps(__m128 a );

RSQRTPS

Computes the approximations of the reciprocals of the square roots of the four single-precision, floating-point values of a.

r0 := recip(sqrt(a0))
r1 := recip(sqrt(a1))
r2 := recip(sqrt(a2))
r3 := recip(sqrt(a3))

__m128 _mm_min_ss(__m128 a , __m128 b );

MINSS

Computes the minimum of the lower single-precision, floating-point values of a and b; the upper three single-precision, floating-point values are passed through from a.

r0 := min(a0, b0)
r1 := a1 ; r2 := a2 ; r3 := a3

__m128 _mm_min_ps(__m128 a , __m128 b );

MINPS

Computes the minima of the four single-precision, floating-point values of a and b.

r0 := min(a0, b0)
r1 := min(a1, b1)
r2 := min(a2, b2)
r3 := min(a3, b3)

__m128 _mm_max_ss(__m128 a , __m128 b );

MAXSS

Computes the maximum of the lower single-precision, floating-point values of a and b; the upper three single-precision, floating-point values are passed through from a.

r0 := max(a0, b0)
r1 := a1 ; r2 := a2 ; r3 := a3

__m128 _mm_max_ps(__m128 a , __m128 b );

MAXPS

Computes the maximums of the four single-precision, floating-point values of a and b.

r0 := max(a0, b0)
r1 := max(a1, b1)
r2 := max(a2, b2)
r3 := max(a3, b3) 

END Microsoft Specific

See Also

Floating-Point Intrinsics Using Streaming SIMD Extensions

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