#include "utils.h"
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>

void error(const char *msg) {
  perror(msg);
  exit(1);
}

double get_time_ms() {
  struct timeval tv;
  gettimeofday(&tv, NULL);
  return (tv.tv_sec * 1000.0) + (tv.tv_usec / 1000.0);
}