#include "asn1_locl.h"

RCSID("$Id$");

#ifndef HAVE_TIMEGM

static int
is_leap(unsigned y)
{
  return (y % 4) == 0 && ((y % 100) != 0 || (y % 400) == 0);
}

time_t
timegm (struct tm *tm)
{
  static const int ndays[2][12] ={
    {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31},
    {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}};
  time_t res = 0;
  int i;

  for (i = 70; i < tm->tm_year; ++i)
    res += is_leap(i) ? 366 : 365;

  for (i = 0; i < tm->tm_mon; ++i)
    res += ndays[is_leap(tm->tm_year)][i];
  res += tm->tm_mday - 1;
  res *= 24;
  res += tm->tm_hour;
  res *= 60;
  res += tm->tm_min;
  res *= 60;
  res += tm->tm_sec;
  return res;
}

#endif