text: //
  // Copyright (c) 2017 The Khronos Group Inc.
  // 
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //    http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  //
  #include "harness/compat.h"
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <sys/types.h>
  #include <sys/stat.h>
  
  
  #include "procs.h"
  
  const char *int2float_kernel_code =
  "__kernel void test_int2float(__global int *src, __global float *dst)\n"
  "{\n"
  "    int  tid = get_global_id(0);\n"
  "\n"
  "    dst[tid] = (float)src[tid];\n"
  "\n"
  "}\n";
  
  
  int
  verify_int2float(cl_int *inptr, cl_float *outptr, int n)
  {
      int     i;
  
      for (i=0; i<n; i++)
      {
          if (outptr[i] != (float)inptr[i])
          {
              log_error("INT2FLOAT test failed\n");
              return -1;
          }
      }
  
      log_info("INT2FLOAT test passed\n");
      return 0;
  }
  
  int
  test_int2float(cl_device_id device, cl_context context, cl_command_queue queue, int num_elements)
  {
      cl_mem            streams[2];
      cl_int            *input_ptr;
      cl_float        *output_ptr;
      cl_program        program;
      cl_kernel        kernel;
      void            *values[2];
      size_t    threads[1];
      int                err;
      int                i;
      MTdata          d;
  
      input_ptr = (cl_int*)malloc(sizeof(cl_int) * num_elements);
      output_ptr = (cl_float*)malloc(sizeof(cl_float) * num_elements);
      streams[0] = clCreateBuffer(context, (cl_mem_flags)(CL_MEM_READ_WRITE),  sizeof(cl_int) * num_elements, NULL, NULL);
      if (!streams[0])
      {
          log_error("clCreateBuffer failed\n");
          return -1;
      }
      streams[1] = clCreateBuffer(context, (cl_mem_flags)(CL_MEM_READ_WRITE),  sizeof(cl_float) * num_elements, NULL, NULL);
      if (!streams[1])
      {
          log_error("clCreateBuffer failed\n");
          return -1;
      }
  
      d = init_genrand( gRandomSeed );
      for (i=0; i<num_elements; i++)
          input_ptr[i] = (cl_int)get_random_float(-MAKE_HEX_FLOAT( 0x1.0p31f, 0x1, 31), MAKE_HEX_FLOAT( 0x1.0p31f, 0x1, 31), d);
      free_mtdata(d); d = NULL;
  
      err = clEnqueueWriteBuffer(queue, streams[0], CL_TRUE, 0, sizeof(cl_int)*num_elements, (void *)input_ptr, 0, NULL, NULL);
      if (err != CL_SUCCESS)
      {
          log_error("clWriteArray failed\n");
          return -1;
      }
  
      err = create_single_kernel_helper(context, &program, &kernel, 1, &int2float_kernel_code, "test_int2float");
      if (err != CL_SUCCESS)
      {
          log_error("create_single_kernel_helper failed\n");
          return -1;
      }
  
      values[0] = streams[0];
      values[1] = streams[1];
      err = clSetKernelArg(kernel, 0, sizeof streams[0], &streams[0]);
      err |= clSetKernelArg(kernel, 1, sizeof streams[1], &streams[1]);
      if (err != CL_SUCCESS)
      {
          log_error("clSetKernelArgs failed\n");
          return -1;
      }
  
      threads[0] = (size_t)num_elements;
      err = clEnqueueNDRangeKernel( queue, kernel, 1, NULL, threads, NULL, 0, NULL, NULL );
      if (err != CL_SUCCESS)
      {
          log_error("clEnqueueNDRangeKernel failed\n");
          return -1;
      }
  
      err = clEnqueueReadBuffer( queue, streams[1], true, 0, sizeof(cl_float)*num_elements, (void *)output_ptr, 0, NULL, NULL );
      if (err != CL_SUCCESS)
      {
          log_error("clEnqueueReadBuffer failed\n");
          return -1;
      }
  
      err = verify_int2float(input_ptr, output_ptr, num_elements);
  
      // cleanup
      clReleaseMemObject(streams[0]);
      clReleaseMemObject(streams[1]);
      clReleaseKernel(kernel);
      clReleaseProgram(program);
      free(input_ptr);
      free(output_ptr);
  
      return err;
  }
  
  
  
  
  
  