Integer Intrinsics Using Streaming SIMD Extension2

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C++

VisualC++

I am using the following function , for a image processing algorithm.

__m128i _mm_srli_si128 (__m128i a, int imm);

MSDN LINK[^]

imm -> is a compile time constant.. ( 0, 1, 2 ......)

But, I would be calculating "imm" at run time only, and I can have any values from " 1 to 20 " which means.. I would to duplicate the same "function call" for different values of "imm" ... something like this.

switch(imm)

{

case 1 : __m128i _mm_srli_si128 (__m128i a, 1);

break ;

case 2 : __m128i _mm_srli_si128 (__m128i a, 2);

break ;

case 3 : __m128i _mm_srli_si128 (__m128i a, 3);

break ;

/* this redundant code has to be written for 20 times !!!! */

}

How can I get-around this problem, Please help.