/***************************************************************************************************
* FILE		: openmp4x-reduce-1Darray.c
*
* INPUT		: Nil
*
* OUTPUT	: Displays Host and device reduce sum
*
* CREATED	: August,2013
*
* EMAIL		: hpcfte@cdac.in
*
***************************************************************************************************/

#include <stdio.h>

 #define SIZE 1000
 #pragma omp declare target

int reduce(int *inarray)
{

  int sum = 0;
  #pragma omp target map(inarray[0:SIZE]) map(sum)
  {
    for(int i=0;i<SIZE;i++)
    sum += inarray[i];
  }
  return sum;
}

int main()
{
  int inarray[SIZE], sum, validSum;

  validSum=0;
  for(int i=0; i<SIZE; i++){
  inarray[i]=i;
  validSum+=i;
  }

 sum=0;
 sum = reduce(inarray);

 printf("sum reduction = %d,validSum=%d\n",sum, validSum);
}