| #include <stdio.h> |
| #include <unistd.h> |
| #include <string.h> |
| #include <math.h> |
| |
| #include "instrument.h" |
| |
| |
| /* Default problem size. */ |
| #ifndef M |
| # define M 500 |
| #endif |
| #ifndef N |
| # define N 500 |
| #endif |
| |
| /* Default data type is double. */ |
| #ifndef DATA_TYPE |
| # define DATA_TYPE double |
| #endif |
| #ifndef DATA_PRINTF_MODIFIER |
| # define DATA_PRINTF_MODIFIER "%0.2lf " |
| #endif |
| |
| /* Array declaration. Enable malloc if POLYBENCH_TEST_MALLOC. */ |
| DATA_TYPE float_n = 321414134.01; |
| #ifndef POLYBENCH_TEST_MALLOC |
| DATA_TYPE data[M + 1][N + 1]; |
| DATA_TYPE symmat[M + 1][M + 1]; |
| DATA_TYPE mean[M + 1]; |
| #else |
| DATA_TYPE** data = (DATA_TYPE**)malloc((M + 1) * sizeof(DATA_TYPE*)); |
| DATA_TYPE** symmat = (DATA_TYPE**)malloc((M + 1) * sizeof(DATA_TYPE*)); |
| DATA_TYPE* mean = (DATA_TYPE*)malloc((M + 1) * sizeof(DATA_TYPE)); |
| { |
| int i; |
| for (i = 0; i <= M; ++i) |
| { |
| data[i] = (DATA_TYPE*)malloc((N + 1) * sizeof(DATA_TYPE)); |
| symmat[i] = (DATA_TYPE*)malloc((M + 1) * sizeof(DATA_TYPE)); |
| } |
| } |
| #endif |
| |
| inline |
| void init_array() |
| { |
| int i, j; |
| |
| for (i = 0; i <= M; i++) |
| for (j = 0; j <= N; j++) |
| data[i][j] = ((DATA_TYPE) i*j) / M; |
| } |
| |
| /* Define the live-out variables. Code is not executed unless |
| POLYBENCH_DUMP_ARRAYS is defined. */ |
| inline |
| void print_array(int argc, char** argv) |
| { |
| int i, j; |
| #ifndef POLYBENCH_DUMP_ARRAYS |
| if (argc > 42 && ! strcmp(argv[0], "")) |
| #endif |
| { |
| for (i = 0; i <= M; i++) |
| for (j = 0; j <= M; j++) { |
| fprintf(stderr, DATA_PRINTF_MODIFIER, symmat[i][j]); |
| if ((i * M + j) % 80 == 20) fprintf(stderr, "\n"); |
| } |
| fprintf(stderr, "\n"); |
| } |
| } |
| |
| #ifndef SCOP_PARAM |
| void scop_func() { |
| int m = M; |
| int n = N; |
| #else |
| void scop_func(long m, long n) { |
| #endif |
| long i, j, j1, j2; |
| #pragma scop |
| #pragma live-out symmat |
| |
| /* Determine mean of column vectors of input data matrix */ |
| for (j = 1; j <= m; j++) |
| { |
| mean[j] = 0.0; |
| for (i = 1; i <= n; i++) |
| mean[j] += data[i][j]; |
| mean[j] /= float_n; |
| } |
| |
| /* Center the column vectors. */ |
| for (i = 1; i <= n; i++) |
| for (j = 1; j <= m; j++) |
| data[i][j] -= mean[j]; |
| |
| /* Calculate the m * m covariance matrix. */ |
| for (j1 = 1; j1 <= m; j1++) |
| for (j2 = j1; j2 <= m; j2++) |
| { |
| symmat[j1][j2] = 0.0; |
| for (i = 1; i <= n; i++) |
| symmat[j1][j2] += data[i][j1] * data[i][j2]; |
| symmat[j2][j1] = symmat[j1][j2]; |
| } |
| |
| #pragma endscop |
| } |
| |
| int main(int argc, char** argv) |
| { |
| int i, j, j1, j2; |
| int m = M; |
| int n = N; |
| |
| /* Initialize array. */ |
| init_array(); |
| |
| /* Start timer. */ |
| polybench_start_instruments; |
| |
| |
| #ifndef SCOP_PARAM |
| scop_func(); |
| #else |
| scop_func(m, n); |
| #endif |
| |
| /* Stop and print timer. */ |
| polybench_stop_instruments; |
| polybench_print_instruments; |
| |
| print_array(argc, argv); |
| |
| return 0; |
| } |