algorithm_2_tile.c
977503bd85c7ancarola

algorithm_2_tile.c
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			/*
			============================================================================
			Filename : algorithm.c
			Author : Your names go here
			SCIPER : Your SCIPER numbers

			============================================================================
			*/
			#include <math.h>

			#define INPUT(I,J) input[(I)*length+(J)]
			#define OUTPUT(I,J) output[(I)*length+(J)]


			void simulate(double input, double output, int threads, int length, int iterations)
			{
			double *temp;

			omp_set_num_threads(threads);

			for(int n=0; n < iterations; n++)
			{
			#pragma omp parallel for collapse(2)
			for(int i=1; i<length-1; i+=2)
			{
			for(int j=1; j<length-1; j+=2)
			{

			if((i+1<length-1)&&(j+1<length-1))
			{
			OUTPUT(i,j) = (INPUT(i-1,j-1) + INPUT(i-1,j) + INPUT(i-1,j+1) + INPUT(i,j-1) + INPUT(i,j) + INPUT(i,j+1) + INPUT(i+1,j-1) + INPUT(i+1,j) + INPUT(i+1,j+1))/9;
			OUTPUT(i+1,j) = (INPUT(i,j-1) + INPUT(i,j) + INPUT(i,j+1) + INPUT(i+1,j-1) + INPUT(i+1,j) + INPUT(i+1,j+1) + INPUT(i+2,j-1) + INPUT(i+2,j) + INPUT(i+2,j+1))/9;
			OUTPUT(i,j+1) = (INPUT(i-1,j) + INPUT(i-1,j+1) + INPUT(i-1,j+2) + INPUT(i,j) + INPUT(i,j+1) + INPUT(i,j+2) + INPUT(i+1,j) + INPUT(i+1,j+1) + INPUT(i+1,j+2))/9;
			OUTPUT(i+1,j+1) = (INPUT(i,j) + INPUT(i,j+1) + INPUT(i,j+2) + INPUT(i+1,j) + INPUT(i+1,j+1) + INPUT(i+1,j+2) + INPUT(i+2,j) + INPUT(i+2,j+1) + INPUT(i+2,j+2))/9;
			}
			else
			{
			OUTPUT(i,j) = (INPUT(i-1,j-1) + INPUT(i-1,j) + INPUT(i-1,j+1) + INPUT(i,j-1) + INPUT(i,j) + INPUT(i,j+1) + INPUT(i+1,j-1) + INPUT(i+1,j) + INPUT(i+1,j+1))/9;
			}
			}
			}

			temp = input;
			input = output;
			output = temp;
			}
			}