#include "utest_helper.hpp"

int cpu(int src, int y) {
  return (src << y) | (src >> (32 - y));
}

void compiler_rotate(void)
{
  const int n = 32;
  int src[n], y[n];

  // Setup kernel and buffers
  OCL_CREATE_KERNEL("compiler_rotate");
  OCL_CREATE_BUFFER(buf[0], 0, n * sizeof(int), NULL);
  OCL_CREATE_BUFFER(buf[1], 0, n * sizeof(int), NULL);
  OCL_CREATE_BUFFER(buf[2], 0, n * sizeof(int), NULL);
  OCL_SET_ARG(0, sizeof(cl_mem), &buf[0]);
  OCL_SET_ARG(1, sizeof(cl_mem), &buf[1]);
  OCL_SET_ARG(2, sizeof(cl_mem), &buf[2]);
  globals[0] = n;
  locals[0] = 16;

  OCL_MAP_BUFFER(0);
  OCL_MAP_BUFFER(2);
  for (int i = 0; i < n; ++i) {
    src[i] = ((int*)buf_data[0])[i] = rand();
    y[i] = ((int*)buf_data[2])[i] = rand() & 31;
  }
  OCL_UNMAP_BUFFER(0);
  OCL_UNMAP_BUFFER(2);

  OCL_NDRANGE(1);

  OCL_MAP_BUFFER(1);
  for (int i = 0; i < n; ++i)
    OCL_ASSERT(((int*)buf_data[1])[i] == cpu(src[i], y[i]));
  OCL_UNMAP_BUFFER(1);
}

MAKE_UTEST_FROM_FUNCTION(compiler_rotate);