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