arithm_exp.cl 3.76 KB
/*M///////////////////////////////////////////////////////////////////////////////////////
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//
//                           License Agreement
//                For Open Source Computer Vision Library
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// Copyright (C) 2010-2012, Institute Of Software Chinese Academy Of Science, all rights reserved.
// Copyright (C) 2010-2012, Advanced Micro Devices, Inc., all rights reserved.
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//
// @Authors
//    Wu Zailong, bullet@yeah.net
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
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//M*/
#if defined (DOUBLE_SUPPORT)
#pragma OPENCL EXTENSION cl_khr_fp64:enable
#endif


//////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////EXP//////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////////////

__kernel void arithm_exp_D5(int rows, int cols, int srcStep, int dstStep, int srcOffset, int dstOffset, __global float *src, __global float *dst)
{

    int x = get_global_id(0);
    int y = get_global_id(1);

    if(x < cols && y < rows)
    {
      x = x << 2;
      int srcIdx = mad24( y, srcStep, x + srcOffset);
      int dstIdx = mad24( y, dstStep, x + dstOffset);

      float src_data = *((__global float *)((__global char *)src + srcIdx));
      float dst_data = exp(src_data);

      *((__global float *)((__global char *)dst + dstIdx)) = dst_data;

    }
}

#if defined (DOUBLE_SUPPORT)
__kernel void arithm_exp_D6(int rows, int cols, int srcStep, int dstStep, int srcOffset, int dstOffset, __global double *src, __global double *dst)
{
  int x = get_global_id(0);
  int y = get_global_id(1);
  if(x < cols && y < rows )
  {
      x = x << 3;
      int srcIdx = mad24( y, srcStep, x + srcOffset);
      int dstIdx = mad24( y, dstStep, x + dstOffset);

      double src_data = *((__global double *)((__global char *)src + srcIdx));
      double dst_data = exp(src_data);

      *((__global double *)((__global char *)dst + dstIdx )) = dst_data;
     // dst[dstIdx] = exp(src[srcIdx]);
  }
}

#endif