25 lines
507 B
C
25 lines
507 B
C
/* $NetBSD: calyearstart.c,v 1.1.1.1 2000/03/29 12:38:49 simonb Exp $ */
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/*
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* calyearstart - determine the NTP time at midnight of January 1 in
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* the year of the given date.
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*/
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#include <sys/types.h>
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#include "ntp_types.h"
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#include "ntp_calendar.h"
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#include "ntp_stdlib.h"
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u_long
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calyearstart(u_long ntp_time)
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{
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struct calendar jt;
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caljulian(ntp_time,&jt);
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jt.yearday = 1;
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jt.monthday = 1;
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jt.month = 1;
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jt.hour = jt.minute = jt.second = 0;
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return caltontp(&jt);
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}
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