csci5451/assignments/01/common.c

81 lines
No EOL
1.8 KiB
C

#define _POSIX_C_SOURCE 199309L
#include <stdio.h>
#include <stdlib.h>
#include "common.h"
double monotonic_seconds() {
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
return ts.tv_sec + ts.tv_nsec * 1e-9;
}
/**
* @brief Output the seconds elapsed while execution.
*
* @param seconds Seconds spent on execution, excluding IO.
*/
void print_time(double const seconds) {
printf("Execution time: %0.04fs\n", seconds);
}
struct data *read_data(char *path) {
struct data *result = malloc(sizeof(struct data));
// Open file
FILE *file;
{
file = fopen(path, "r");
if (!file)
perror("failed to open file");
if (!fscanf(file, "%u", &result->rows))
perror("failed to read num rows");
if (!fscanf(file, "%u", &result->dimensions))
perror("failed to read num dimensions");
// Allocate
result->buf = malloc(result->dimensions * result->rows * sizeof(FLOAT));
// Read into buffer
for (uint32_t j = 0; j < result->rows; j++) {
for (uint32_t i = 0; i < result->dimensions; i++) {
if (!fscanf(file, FLOAT_FORMAT, &result->buf[result->rows * i + j]))
perror("failed to read data");
}
}
fclose(file);
}
return result;
}
struct labels *read_labels(char *path) {
struct labels *result = malloc(sizeof(struct labels));
// Open file
FILE *file;
{
file = fopen(path, "r");
if (!file)
perror("failed to open file");
if (!fscanf(file, "%u", &result->rows))
perror("failed to read num rows");
// Allocate
result->buf = malloc(result->rows * sizeof(FLOAT));
// Read into buffer
for (uint32_t i = 0; i < result->rows; i++) {
if (!fscanf(file, FLOAT_FORMAT, &result->buf[i]))
perror("failed to read label");
}
fclose(file);
}
return result;
}