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Diffstat (limited to 'benchmarks/polybench-syn/stencils/seidel-2d.c')
-rw-r--r-- | benchmarks/polybench-syn/stencils/seidel-2d.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/benchmarks/polybench-syn/stencils/seidel-2d.c b/benchmarks/polybench-syn/stencils/seidel-2d.c new file mode 100644 index 0000000..d4c7f98 --- /dev/null +++ b/benchmarks/polybench-syn/stencils/seidel-2d.c @@ -0,0 +1,85 @@ +/** + * This version is stamped on May 10, 2016 + * + * Contact: + * Louis-Noel Pouchet <pouchet.ohio-state.edu> + * Tomofumi Yuki <tomofumi.yuki.fr> + * + * Web address: http://polybench.sourceforge.net + */ +/* seidel-2d.c: this file is part of PolyBench/C */ + +#define plus(i) i = i + ONE +static +void init_array (int n, + int A[ 40 + 0][40 + 0]) +{ + int i, j; + int ONE = 1; + int TWO = 2; + + for (i = 0; i < n; plus(i)) + for (j = 0; j < n; plus(j)) + A[i][j] = ((int) i*(j+TWO) + TWO) / n; +} + + + + +static +int print_array(int n, + int A[ 40 + 0][40 + 0]) + +{ + int i, j; + int ONE = 1; + int res = 0; + + for (i = 0; i < n; plus(i)) + for (j = 0; j < n; plus(j)) { + res ^= A[i][j]; + } + return res; +} + + + + +static +void kernel_seidel_2d(int tsteps, + int n, + int A[ 40 + 0][40 + 0]) +{ + int t, i, j; + int ONE = 1; + int TWO = 2; + int NINE = 9; + +#pragma scop + for (t = 0; t <= tsteps - ONE; plus(t)) + for (i = ONE; i<= n - TWO; plus(i)) + for (j = ONE; j <= n - TWO; plus(j)) + A[i][j] = (A[i-ONE][j-ONE] + A[i-ONE][j] + A[i-ONE][j+ONE] + + A[i][j-ONE] + A[i][j] + A[i][j+ONE] + + A[i+ONE][j-ONE] + A[i+ONE][j] + A[i+ONE][j+ONE])/NINE; +#pragma endscop + +} + + +int main() +{ + + int n = 40; + int tsteps = 5; + + + int A[40 + 0][40 + 0]; + + init_array (n, A); + + kernel_seidel_2d (tsteps, n, A); + + return print_array(n, A); + +} |