SSE_ALL-Arithmetic-MMX

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SSE_ALL-Arithmetic-MMX#

_m_pmulhuw#

Tech:

SSE_ALL

Category:

Arithmetic

Header:

xmmintrin.h

Searchable:

SSE_ALL-Arithmetic-MMX

Register:

MMX 64 bit

Return Type:

__m64

Param Types:

__m64 a, __m64 b

Param ETypes:

UI16 a, UI16 b

__m64 _m_pmulhuw(__m64 a, __m64 b);

Intel Description

Multiply the packed unsigned 16-bit integers in “a” and “b”, producing intermediate 32-bit integers, and store the high 16 bits of the intermediate integers in “dst”.

Intel Implementation Psudeo-Code

FOR j := 0 to 3
        i := j*16
        tmp[31:0] := a[i+15:i] * b[i+15:i]
        dst[i+15:i] := tmp[31:16]
ENDFOR
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