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/freebsd-src/contrib/ntp/libntp/
H A Dclocktime.c2 * clocktime - compute the NTP date from a day of year, hour, minute
21 * change when we are already less than a half year from the receive
22 * time stamp. Since the length of a year is variable we use a
35 * Take a time spec given as day-of-year, hour, minute and second as
37 * '*ts_ui'. The value will be in the range (rec_ui-0.5yrs) to
38 * (rec_ui+0.5yrs). A hint for the current start-of-year will be
42 * '*yearstart' will receive the associated start-of-year.
45 * (+/-4hrs) around the receive time by returning a non-zero value.
49 * 32-bit arithmetic.
53 int yday , /* day-of-year */ in clocktime()
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H A Dntp_calendar.c2 * ntp_calendar.c - calendar and helper functions
7 * --------------------------------------------------------------------
17 * constant-divider case.
61 * macros are not defined, check a few well-known compiler/architecture
63 * integers is unknown and shift-arithmetic-right is not available.
92 *---------------------------------------------------------------------
94 *---------------------------------------------------------------------
124 *---------------------------------------------------------------------
126 *---------------------------------------------------------------------
137 * true, though -- On 8bit CPUs or machines without barrel in int32_sflag()
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H A Dymd2yd.c2 * ymd2yd - compute the date in the year from y/m/d
19 * elapsed days since the start of the given year and convert in ymd2yd()
20 * back to unity-based day in year. in ymd2yd()
25 return ntpcal_edate_to_yeardays(y-1, m-1, d-1) + 1; in ymd2yd()
H A Dntp_calgps.c2 * ntp_calgps.c - calendar for GPS/GNSS based clocks
7 * --------------------------------------------------------------------
26 * misc. helpers -- might go elsewhere sometime?
37 /* calculate 'lfp - ofs' as '(l_fp)(-ofs) + lfp': negating a in ntpfp_with_fudge()
40 ofs = -ofs; in ntpfp_with_fudge()
52 /* --------------------------------------------------------------------
55 * alike) it does not really pay off to do a floor-corrected division
57 * --------------------------------------------------------------------
66 if (datum->secs >= limit) { in _norm_ntp_datum()
68 ++datum->days; in _norm_ntp_datum()
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/freebsd-src/contrib/ntp/include/
H A Dntp_calendar.h2 * ntp_calendar.h - definitions for the calendar time-of-day routine
13 uint16_t year; /* year (A.D.) */ member
14 uint16_t yearday; /* day of year, 1 = January 1 */
27 uint16_t year; /* year (A.D.) */ member
28 uint8_t week; /* 1..53, week in year */
54 * days-of-week
83 * We deal in a 4 year cycle starting at March 1, 1900. We assume
91 #define DAYSPERYEAR (365) /* days per year */
96 #define SECSPERYEAR (365 * SECSPERDAY) /* regular year */
97 #define SECSPERLEAPYEAR (366 * SECSPERDAY) /* leap year */
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/freebsd-src/contrib/tzdata/
H A Dleapseconds.awk1 # Generate zic format 'leapseconds' from NIST/IERS format 'leap-seconds.list'.
7 # timestamps this program works only to the year 2216, which is the
8 # year 1900 plus 10**10 seconds. However, in practice
9 # POSIX-conforming awk implementations invariably use IEEE-754 double
10 # and so support exact integers through 2**53. By the year 2216,
12 # timestamps this program should be good until the year 285,428,681
13 # (the year 1900 plus 2**53 seconds). By then leap seconds will be
23 print "# This file is generated automatically from the data in the public-domain"
24 print "# NIST/IERS format leap-seconds.list file, which can be copied from"
25 print "# <https://hpiers.obspm.fr/iers/bul/bulc/ntp/leap-seconds.list>"
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/freebsd-src/usr.sbin/fifolog/lib/
H A Dgetdate.y13 ** Poul-Henning Kamp <phk@FreeBSD.org>
50 ** Daylight-savings mode: on, off, or not yet known.
57 ** Meridian: am, pm, or 24-hour style.
163 yyTimezone = - ($4 % 100 + ($4 / 100) * 60);
177 yyTimezone = - ($6 % 100 + ($6 / 100) * 60);
226 /* ISO 8601 format. yyyy-mm-dd. */
228 yyMonth = -$2;
229 yyDay = -$3;
232 /* e.g. 17-JUN-1992. */
235 yyYear = -$3;
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/freebsd-src/contrib/libarchive/libarchive/
H A Darchive_getdate.c4 * This is a plain C recursive-descent translation of an old
5 * public-domain YACC grammar that has been used for parsing dates in
6 * very many open-source projects.
47 /* Daylight-savings mode: on, off, or not yet known. */
78 time_t Year; member
85 * seconds, month/year are counted in months. */
103 if (gds->tokenp[0].token == tUNUMBER in timephrase()
104 && gds->tokenp[1].token == ':' in timephrase()
105 && gds->tokenp[2].token == tUNUMBER in timephrase()
106 && gds->tokenp[3].token == ':' in timephrase()
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/freebsd-src/usr.bin/find/
H A Dgetdate.y74 ** Daylight-savings mode: on, off, or not yet known.
81 ** Meridian: am, pm, or 24-hour style.
169 yyTimezone = - ($4 % 100 + ($4 / 100) * 60);
183 yyTimezone = - ($6 % 100 + ($6 / 100) * 60);
232 /* ISO 8601 format. yyyy-mm-dd. */
234 yyMonth = -$2;
235 yyDay = -$3;
238 /* e.g. 17-JUN-1992. */
241 yyYear = -$3;
264 yyRelSeconds = -yyRelSeconds;
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/freebsd-src/contrib/ntp/scripts/monitoring/
H A Dtimelocal.pl4 ;# $time = timelocal($sec,$min,$hours,$mday,$mon,$year,$junk,$junk,$isdst);
5 ;# $time = timegm($sec,$min,$hours,$mday,$mon,$year);
8 ;# with localtime() and gmtime(). We manage this by caching the start times
9 ;# of any months we've seen before. If we know the start time of the month,
10 ;# we can always calculate any time within the month. The start times
30 $tzmin = 24 * 60 - $tzmin; # minutes west of GMT
31 $tzmin -= 24 * 60 if $epoch[5] == 70; # account for the date line
46 $cheat + $_[0] * $SEC + $_[1] * $MIN + $_[2] * $HR + ($_[3]-1) * $DAYS;
54 $cheat + $_[0] * $SEC + $_[1] * $MIN + $_[2] * $HR + ($_[3]-1) * $DAYS
55 + $tzmin * $MIN - 60 * 60 * ($_[8] != 0);
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/freebsd-src/lib/libcalendar/
H A Dcalendar.c1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
37 * For each month tabulate the number of days elapsed in a year before the
38 * month. This assumes the internal date representation, where a year
40 * But we do need a special table for the year 1582, since 10 days are
60 static int firstweek(int year);
64 * March 1st of year zero.
73 * Compute the year by starting with an approximation not smaller in jdate()
75 * year which does not begin after ndays. in jdate()
81 idt.y--; in jdate()
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H A Dcalendar.344 .Fn easterg "int year" "struct date *dt"
46 .Fn easterog "int year" "struct date *dt"
48 .Fn easteroj "int year" "struct date *dt"
58 .Fn week "int nd" "int *year"
63 starting at March 1st, year zero (i.e., 1 B.C.) and ending way beyond
64 year 100000.
99 provide conversions between the common "year, month, day" notation
102 The days are numbered from March 1st year 1 B.C., starting
104 year 1 B.C.
138 The two calendars differ by the definition of the leap year.
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/freebsd-src/sys/kern/
H A Dsubr_clock.c1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
60 error = sysctl_handle_int(oidp, oidp->oid_arg1, oidp->oid_arg2, req); in sysctl_machdep_adjkerntz()
61 if (!error && req->newptr) in sysctl_machdep_adjkerntz()
77 /*--------------------------------------------------------------------*
86 (month_days[(m) - 1] + (m == FEBRUARY ? leapyear(y) : 0))
96 * some recent year avoids lots of unnecessary loop iterations in conversion.
97 * recent_base_days is the number of days before the start of recent_base_year.
103 * Table to 'calculate' pow(10, 9 - nsdigits) via lookup of nsdigits.
113 * ( ((year % 4) == 0 &&
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H A Dsubr_fattime.c1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
4 * Copyright (c) 2006 Poul-Henning Kamp
28 * Convert MS-DOS FAT format timestamps to and from unix timespecs
33 * yyyyyyymmmmddddd (year - 1980, month, day)
54 * The conversion functions below cut time into four-year leap-year
63 * FAT timestamps have 7 bits for the year and starts at 1980, so
64 * they can represent up to 2107 which means that the non-leap-year
79 #define YEAR 365 /* Length of normal year */ macro
80 #define LYC (4 * YEAR + 1) /* Length of 4 year leap-year cycle */
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/freebsd-src/usr.bin/calendar/
H A Dcalendar.145 .Bk -words
48 .Op . Ar mm Op . Ar year
52 .Op Fl U Ar UTC-offset
64 .Bl -tag -width Ds
87 This option requires super-user privileges.
112 .Op . Ar mm Op . Ar year
116 .It Fl U Ar UTC-offset
137 .Bl -tag -width 123456789012345 -compact
155 The first day of the Chinese year.
178 .Dq Paskha-4 .
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/freebsd-src/usr.bin/last/
H A Dlast.136 .Op Fl -libxo
64 hostname, the start and stop times for the session, and the duration
72 .Bl -tag -width indent-two
73 .It Fl -libxo
103 .Bl -tag -width Ds -compact -offset indent
105 The first two digits of the year (the century).
107 The second two digits of the year.
121 Month of the year, from 1 to 12.
137 year.
160 .Dq Li "last -t 03"
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/freebsd-src/contrib/tzcode/
H A Dzic.82 .\" 2009-05-17 by Arthur David Olson.
11 .Op Fl -help
12 .Op Fl -version
27 .Op Fl t Ar localtime-link
39 .Dq "-" ,
43 .Bl -tag -width indent
44 .It Fl -version
46 .It Fl -hel
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/freebsd-src/contrib/ntp/clockstuff/
H A Dchutest.c2 * chutest - test the CHU clock
84 * main - parse arguments and handle options
133 (void) fprintf(stderr, "usage: %s [-dft] tty_device\n", in main()
137 (void) fprintf(stderr, "usage: %s [-dft] tty_device\n", in main()
142 (void) fprintf(stderr, "usage: %s [-cdft] tty_device\n", in main()
168 * openterm - open a port to the CHU clock
236 * process_raw - process characters in raw mode
253 difftv.tv_sec = tv.tv_sec - lasttv.tv_sec; in process_raw()
254 difftv.tv_usec = tv.tv_usec - lasttv.tv_usec; in process_raw()
256 difftv.tv_sec--; in process_raw()
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/freebsd-src/contrib/ntp/ntpd/
H A Drefclock_hopfser.c4 * - clock driver for hopf serial boards (GPS or DCF77)
53 #define PRECISION (-10) /* precision assumed (about 1 ms) */
101 hopfserial_start, /* start up driver */
111 * hopfserial_start - open the devices and initialize data for processing
129 fd = refclock_open(&peer->srcadr, gpsdev, SPEED232, LDISC_CLK); in hopfserial_start()
132 printf("hopfSerialClock(%d) start: open %s failed\n", unit, gpsdev); in hopfserial_start()
144 pp = peer->procptr; in hopfserial_start()
145 pp->unitptr = up; in hopfserial_start()
146 pp->io.clock_recv = hopfserial_receive; in hopfserial_start()
147 pp->io.srcclock = peer; in hopfserial_start()
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H A Drefclock_tsyncpci.c65 #define PRECISION (-20) /* precision assumed (1 us) */
66 #define DESCRIPTION "Spectracom TSYNC-PCI" /* WRU */
104 #define TSYNC_TIME_BASE_YEAR (1970) // earliest acceptable year
142 unsigned char syncOption; /* -M option */
148 unsigned short year; member
188 unsigned int year; member
271 tsync_start, /* start up driver */
313 * IN: unit - not used.
314 * *peer - pointer to this reference clock's peer structure
315 * Returns: 0 - unsuccessful
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H A Drefclock_chronolog.c2 * refclock_chronolog - clock driver for Chronolog K-series WWVB receiver.
26 * This driver supports the Chronolog K-series WWVB receiver.
33 * YY/MM/DD -- what you'd expect. This arrives a few seconds before the
35 * hh:mm:ss -- what you'd expect. We take time on the <cr>.
49 #define PRECISION (-13) /* precision assumed (about 100 us) */
51 #define DESCRIPTION "Chrono-log K" /* WRU */
56 * Chrono-log unit control structure
62 int year; /* Y2K-adjusted year */ member
63 int day; /* day-of-month */
64 int month; /* month-of-year */
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/freebsd-src/contrib/ntp/parseutil/
H A Ddcfd.c2 …* /src/NTP/REPOSITORY/ntp4-dev/parseutil/dcfd.c,v 4.18 2005/10/07 22:08:18 kardel RELEASE_20051008…
14 * Leap second handling (at that level you should switch to NTP Version 4 - really!)
16 * Copyright (c) 1995-2015 by Frank Kardel <kardel <AT> ntp.org>
17 …* Copyright (c) 1989-1994 by Frank Kardel, Friedrich-Alexander Universitaet Erlangen-Nuernberg, Ge…
90 if ((_a_)->tv_usec >= 1000000) \
92 (_a_)->tv_sec += (_a_)->tv_usec / 1000000; \
93 (_a_)->tv_usec = (_a_)->tv_usec % 1000000; \
95 if ((_a_)->tv_usec < 0) \
97 (_a_)->tv_sec -= 1 + (-(_a_)->tv_usec / 1000000); \
98 (_a_)->tv_usec = 999999 - (-(_a_)->tv_usec - 1); \
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/freebsd-src/contrib/ntp/libparse/
H A Dclk_rcc8000.c2 * /src/NTP/ntp4-dev/libparse/clk_rcc8000.c,v 4.9 2004/11/14 15:29:41 kardel RELEASE_20050508_A
6 * Radiocode Clocks Ltd RCC 8000 Intelligent Off-Air Master Clock support
45 * DDD - Day of year number
46 * W - Day of week number (Sunday is 0)
52 { { { 13, 2 }, {16, 2}, { 19, 2}, /* Day, Month, Year */
84 if (!Strok(buffer, format->fixed_string)) return CVT_NONE; in cvt_rcc8000()
85 #define OFFS(x) format->field_offsets[(x)].offset in cvt_rcc8000()
86 #define STOI(x, y) Stoi(&buffer[OFFS(x)], y, format->field_offsets[(x)].length) in cvt_rcc8000()
87 if ( STOI(O_DAY, &clock_time->day) || in cvt_rcc8000()
88 STOI(O_MONTH, &clock_time->month) || in cvt_rcc8000()
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H A Dclk_rawdcf.c2 …* /src/NTP/REPOSITORY/ntp4-dev/libparse/clk_rawdcf.c,v 4.18 2006/06/22 18:40:01 kardel RELEASE_200…
8 * Copyright (c) 1995-2015 by Frank Kardel <kardel <AT> ntp.org>
9 …* Copyright (c) 1989-1994 by Frank Kardel, Friedrich-Alexander Universitaet Erlangen-Nuernberg, Ge…
60 * From "Zur Zeit", Physikalisch-Technische Bundesanstalt (PTB), Braunschweig
73 * see the spec. (basically a (non-)inverted psuedo random phase shift)
77 * 0 - 10 AM: free, FM: 0
78 * 11 - 14 free
79 * 15 R - "call bit" used to signalize irregularities in the control facilities
81 * 16 A1 - expect zone change (1 hour before)
82 * 17 - 18 Z1,Z2 - time zone
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/freebsd-src/contrib/ntp/scripts/stats/
H A DREADME.timecodes11 C on-time character (start bit)
12 Y year of century
14 D day of year or month/day
40 ddd = day of year
60 yy = year (as broadcast)
61 ddd = day of year
63 l = leap-second warning (L indicates leap at end of month)
75 TrueTime 468-DC Satellite Synchronized Clock (and other TrueTime
93 Heath GC-1000 Most Accurate Clock (WWV/H)
102 yy = year of century (from DIPswitches)
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