freebsd-dev/contrib/ntp/libntp/gpstolfp.c
2001-08-29 14:35:15 +00:00

42 lines
988 B
C

/*
* /src/NTP/ntp-4/libntp/gpstolfp.c,v 4.3 1999/02/28 11:42:44 kardel RELEASE_19990228_A
*
* $Created: Sun Jun 28 16:30:38 1998 $
*
* Copyright (C) 1998 by Frank Kardel
*/
#include "ntp_fp.h"
#define GPSORIGIN ULONG_CONST(2524953600) /* NTP origin - GPS origin in seconds */
#define SECSPERWEEK (unsigned)(604800) /* seconds per week - GPS tells us about weeks */
#define GPSWRAP 990 /* assume week count less than this in the previous epoch */
void
gpstolfp(
int weeks,
int days,
unsigned long seconds,
l_fp * lfp
)
{
if (weeks < GPSWRAP)
{
weeks += 1024;
}
lfp->l_ui = weeks * SECSPERWEEK + days * 86400 + seconds + GPSORIGIN; /* convert to NTP time */
lfp->l_uf = 0;
}
/*
* gpstolfp.c,v
* Revision 4.3 1999/02/28 11:42:44 kardel
* (GPSWRAP): update GPS rollover to 990 weeks
*
* Revision 4.2 1998/07/11 10:05:25 kardel
* Release 4.0.73d reconcilation
*
* Revision 4.1 1998/06/28 16:47:15 kardel
* added gpstolfp() function
*/