SSE_ALL-Elementary Math Functions-XMM

SSE_ALL-Elementary Math Functions-XMM#

_mm_sqrt_ss#

Tech:

SSE_ALL

Category:

Elementary Math Functions

Header:

xmmintrin.h

Searchable:

SSE_ALL-Elementary Math Functions-XMM

Register:

XMM 128 bit

Return Type:

__m128

Param Types:

__m128 a

Param ETypes:

FP32 a

__m128 _mm_sqrt_ss(__m128 a);

Intel Description

Compute the square root of the lower single-precision (32-bit) floating-point element in “a”, store the result in the lower element of “dst”, and copy the upper 3 packed elements from “a” to the upper elements of “dst”.

Intel Implementation Psudeo-Code

dst[31:0] := SQRT(a[31:0])
dst[127:32] := a[127:32]

_mm_sqrt_ps#

Tech:

SSE_ALL

Category:

Elementary Math Functions

Header:

xmmintrin.h

Searchable:

SSE_ALL-Elementary Math Functions-XMM

Register:

XMM 128 bit

Return Type:

__m128

Param Types:

__m128 a

Param ETypes:

FP32 a

__m128 _mm_sqrt_ps(__m128 a);

Intel Description

Compute the square root of packed single-precision (32-bit) floating-point elements in “a”, and store the results in “dst”.

Intel Implementation Psudeo-Code

FOR j := 0 to 3
        i := j*32
        dst[i+31:i] := SQRT(a[i+31:i])
ENDFOR

_mm_rcp_ss#

Tech:

SSE_ALL

Category:

Elementary Math Functions

Header:

xmmintrin.h

Searchable:

SSE_ALL-Elementary Math Functions-XMM

Register:

XMM 128 bit

Return Type:

__m128

Param Types:

__m128 a

Param ETypes:

FP32 a

__m128 _mm_rcp_ss(__m128 a);

Intel Description

Compute the approximate reciprocal of the lower single-precision (32-bit) floating-point element in “a”, store the result in the lower element of “dst”, and copy the upper 3 packed elements from “a” to the upper elements of “dst”. The maximum relative error for this approximation is less than 1.5*2^-12.

Intel Implementation Psudeo-Code

dst[31:0] := (1.0 / a[31:0])
dst[127:32] := a[127:32]

_mm_rcp_ps#

Tech:

SSE_ALL

Category:

Elementary Math Functions

Header:

xmmintrin.h

Searchable:

SSE_ALL-Elementary Math Functions-XMM

Register:

XMM 128 bit

Return Type:

__m128

Param Types:

__m128 a

Param ETypes:

FP32 a

__m128 _mm_rcp_ps(__m128 a);

Intel Description

Compute the approximate reciprocal of packed single-precision (32-bit) floating-point elements in “a”, and store the results in “dst”. The maximum relative error for this approximation is less than 1.5*2^-12.

Intel Implementation Psudeo-Code

FOR j := 0 to 3
        i := j*32
        dst[i+31:i] := (1.0 / a[i+31:i])
ENDFOR

_mm_rsqrt_ss#

Tech:

SSE_ALL

Category:

Elementary Math Functions

Header:

xmmintrin.h

Searchable:

SSE_ALL-Elementary Math Functions-XMM

Register:

XMM 128 bit

Return Type:

__m128

Param Types:

__m128 a

Param ETypes:

FP32 a

__m128 _mm_rsqrt_ss(__m128 a);

Intel Description

Compute the approximate reciprocal square root of the lower single-precision (32-bit) floating-point element in “a”, store the result in the lower element of “dst”, and copy the upper 3 packed elements from “a” to the upper elements of “dst”. The maximum relative error for this approximation is less than 1.5*2^-12.

Intel Implementation Psudeo-Code

dst[31:0] := (1.0 / SQRT(a[31:0]))
dst[127:32] := a[127:32]

_mm_rsqrt_ps#

Tech:

SSE_ALL

Category:

Elementary Math Functions

Header:

xmmintrin.h

Searchable:

SSE_ALL-Elementary Math Functions-XMM

Register:

XMM 128 bit

Return Type:

__m128

Param Types:

__m128 a

Param ETypes:

FP32 a

__m128 _mm_rsqrt_ps(__m128 a);

Intel Description

Compute the approximate reciprocal square root of packed single-precision (32-bit) floating-point elements in “a”, and store the results in “dst”. The maximum relative error for this approximation is less than 1.5*2^-12.

Intel Implementation Psudeo-Code

FOR j := 0 to 3
        i := j*32
        dst[i+31:i] := (1.0 / SQRT(a[i+31:i]))
ENDFOR

_mm_sqrt_sd#

Tech:

SSE_ALL

Category:

Elementary Math Functions

Header:

emmintrin.h

Searchable:

SSE_ALL-Elementary Math Functions-XMM

Register:

XMM 128 bit

Return Type:

__m128d

Param Types:

__m128d a, __m128d b

Param ETypes:

FP64 a, FP64 b

__m128d _mm_sqrt_sd(__m128d a, __m128d b);

Intel Description

Compute the square root of the lower double-precision (64-bit) floating-point element in “b”, store the result in the lower element of “dst”, and copy the upper element from “a” to the upper element of “dst”.

Intel Implementation Psudeo-Code

dst[63:0] := SQRT(b[63:0])
dst[127:64] := a[127:64]

_mm_sqrt_pd#

Tech:

SSE_ALL

Category:

Elementary Math Functions

Header:

emmintrin.h

Searchable:

SSE_ALL-Elementary Math Functions-XMM

Register:

XMM 128 bit

Return Type:

__m128d

Param Types:

__m128d a

Param ETypes:

FP64 a

__m128d _mm_sqrt_pd(__m128d a);

Intel Description

Compute the square root of packed double-precision (64-bit) floating-point elements in “a”, and store the results in “dst”.

Intel Implementation Psudeo-Code

FOR j := 0 to 1
        i := j*64
        dst[i+63:i] := SQRT(a[i+63:i])
ENDFOR
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