2000-04-17 09:48:36 +04:00
|
|
|
/* $NetBSD: gpstolfp.c,v 1.2 2000/04/17 05:48:36 simonb Exp $ */
|
2000-03-29 16:38:44 +04:00
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* /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"
|
|
|
|
|
|
2000-04-17 09:48:36 +04:00
|
|
|
#define GPSORIGIN (unsigned long)(2524953600UL) /* NTP origin - GPS origin in seconds */
|
2000-03-29 16:38:44 +04:00
|
|
|
#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
|
|
|
|
|
*/
|
