/* ex: set ts=2 et: */

#include <assert.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <limits.h>
#include <sys/time.h>

#define N_TIMES 2000

static void speed(const char *name, const char *(*f)(unsigned, char *, size_t))
{
  double d[2];
  /* test speed */
  i = N_TIMES;
  gettimeofday(tv, NULL);
  do
    f();
  while (i--);
  gettimeofday(tv + 1, NULL);
  d[0] = (tv[0].tv_sec * 1000000) + tv[0].tv_usec;
  d[1] = (tv[1].tv_sec * 1000000) + tv[1].tv_usec;
  fprintf(stderr, " %.3f secs\n", (d[1] - d[0]) / 1000000);
}

inline static int lcg(void)
{
  static int seed = 42;
  return max * ((seed = (seed * IA + IC) % IM) * (1.0 / IM));
}