/** * This version is stamped on May 10, 2016 * * Contact: * Louis-Noel Pouchet * Tomofumi Yuki * * Web address: http://polybench.sourceforge.net */ /* cholesky.c: this file is part of PolyBench/C */ #include # define SQRT_FUN(x) sqrtf(x) #define plus(i) i = i + ONE static void init_array(int n, int A[40][40]) { int i, j; int ONE = 1; for (i = 0; i < n; plus(i)) { for (j = 0; j <= i; plus(j)) A[i][j] = (int)(-j % n) / n + ONE; for (j = i + ONE; j < n; plus(j)) { A[i][j] = 0; } A[i][i] = 1; } int r,s,t; int B[40][40]; for (r = 0; r < n; ++r) for (s = 0; s < n; ++s) B[r][s] = 0; for (t = 0; t < n; ++t) for (r = 0; r < n; ++r) for (s = 0; s < n; ++s) B[r][s] += A[r][t] * A[s][t]; for (r = 0; r < n; ++r) for (s = 0; s < n; ++s) A[r][s] = B[r][s]; } static int check_array(int n, int A[40][40]) { int res = 0; int ONE = 1; int i, j; for (i = 0; i < n; plus(i)) for (j = 0; j <= i; plus(j)) { if(A[i][j]!=0) res = 1; } return res; } static void kernel_cholesky(int n, int A[40][40]) { int i, j, k; int ONE = 1; #pragma scop for (i = 0; i < n; plus(i)) { for (j = 0; j < i; plus(j)) { for (k = 0; k < j; plus(k)) { A[i][j] -= A[i][k] * A[j][k]; } A[i][j] /= A[j][j]; } for (k = 0; k < i; plus(k)) { A[i][i] -= A[i][k] * A[i][k]; } int sq = 0; int val = 0; int cmp = A[i][i]; printf("cmp %d\n",cmp); while(sq <= cmp) { val = val + ONE; sq = val * val; } printf("val %d\n",val); A[i][i] = val; } #pragma endscop } int main(int argc, char** argv) { int n = 40; int A[40][40]; //init_array (n, A); kernel_cholesky (n, A); return check_array(n, A); return 0; }