loop.c

/*
 * This software is delivered under the terms of the MIT License
 *
 * Copyright (C) STMicroelectronics Ltd. 2013
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 */

/*
 * loop.c: simple C test file for run-qemu-profile.sh
 */

#include <stdio.h>
#include <assert.h>

#define PRECOND(x) assert(x)
#define ASSERT(x) assert(x)

int loop(int *dst, const int *a, const int *b, int n)
{
  int i, sum = 0;
  for (i = 0; i < n; i++) {
    if (i % 2 == 0)
      dst[i] = a[i] + b[i];
    else
      dst[i] = a[i];
    sum += dst[i];
  }
  return sum;
}

#define SIZE 1000000
int a[SIZE], b[SIZE], c[SIZE];

void init(int *a, int n, int val)
{
  int i;
  for (i = 0; i < n; i++)
    a[i] = val;
}

int main(int argc, char *argv[])
{
  int sum;

  PRECOND(SIZE % 2 == 0);

  init(a, SIZE, 1);
  init(b, SIZE, 2);

  sum = loop(c, a, b, SIZE);
  printf("SUM: %d\n", sum);

  ASSERT(sum == 1 * SIZE/2 + 3 * SIZE/2);

  return 0;
}