70 lines
2.5 KiB
C
70 lines
2.5 KiB
C
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/* $NetBSD: clock.h,v 1.1 1996/07/20 17:35:42 ragge Exp $ */
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/*
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* Copyright (c) 1996 Ludd, University of Lule}, Sweden.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed at Ludd, University of
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* Lule}, Sweden and its contributors.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Conversion structure.
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*/
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struct chiptime {
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long sec;
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long min;
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long hour;
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long day;
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long mon;
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long year;
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};
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/*
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* Time constants. These are unlikely to change.
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*/
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#define IS_LEAPYEAR(y) (((y % 4) == 0) && (y % 100))
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#define SEC_PER_MIN (60)
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#define SEC_PER_HOUR (SEC_PER_MIN * 60)
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#define SEC_PER_DAY (SEC_PER_HOUR * 24)
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#define DAYSPERYEAR(y) (IS_LEAPYEAR(y) ? 366 : 365)
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#define SECPERYEAR(y) (DAYSPERYEAR(y) * SEC_PER_DAY)
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#define CLKREAD_OK 0
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#define CLKREAD_BAD -1
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#define CLKREAD_WARN -2
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#define TODRBASE (1 << 28) /* Rumours says it comes from VMS */
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/* Prototypes */
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long chiptotime __P((struct chiptime *));
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void timetochip __P((struct chiptime *));
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void generic_clock __P((void));
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void no_nicr_clock __P((void));
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int generic_clkread __P((time_t));
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void generic_clkwrite __P((void));
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