91 lines
1.8 KiB
C
91 lines
1.8 KiB
C
#include "util.h"
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#include <math.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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static double start_time[8];
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void timer_init() { srand(time(NULL)); }
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static double get_time() {
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struct timespec tv;
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clock_gettime(CLOCK_MONOTONIC, &tv);
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return tv.tv_sec + tv.tv_nsec * 1e-9;
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}
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void timer_start(int i) { start_time[i] = get_time(); }
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double timer_stop(int i) { return get_time() - start_time[i]; }
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void alloc_array(double **m, int N) {
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*m = (double *)aligned_alloc(32, sizeof(double) * N);
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if (*m == NULL) {
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printf("Failed to allocate memory for array.\n");
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exit(0);
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}
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}
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void rand_array(double *m, int N) {
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for (int j = 0; j < N; j++) {
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m[j] = (double)rand() / RAND_MAX - 0.5;
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// m[j] = (double)0.01f;
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}
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}
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void copy_array(double *a, double *b, int N) {
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for (int j = 0; j < N; j++) {
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a[j] = b[j];
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}
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}
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void zero_array(double *m, int N) { memset(m, 0, sizeof(double) * N); }
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void print_vec(double *m, int N) {
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for (int i = 0; i < N; ++i) {
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printf("%+.3f ", m[i]);
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}
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printf("\n");
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}
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void print_mat(double *m, int M, int N) {
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for (int i = 0; i < M; ++i) {
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for (int j = 0; j < N; ++j) {
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printf("%+.3f ", m[i * N + j]);
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}
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printf("\n");
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}
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}
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void check_prefix_sum(const double *out, const double *in, int N) {
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printf("Validating...\n");
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double answer = 0.f;
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bool is_valid = true;
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double eps = 1e-3;
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for (int i = 0; i < N; ++i) {
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answer += in[i];
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double candidate = out[i];
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if (fabs((candidate - answer) / answer) > eps) {
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printf("out[%d]: correct_value = %f, your_value = %f\n", i, answer,
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candidate);
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is_valid = false;
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break;
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} else {
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answer = out[i];
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}
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}
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if (is_valid) {
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printf("Result: VALID\n");
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} else {
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printf("Result: INVALID\n");
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}
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}
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