mirror of
https://github.com/Valeh2012/PersonalVotingMachine
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83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
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/*
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datecalc.c
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Written 1996/96 by Oliver Kraus
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Published by Heinz Heise Verlag 1997 (c't 15/97)
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Completly rewritten and put under GPL 2011 by Oliver Kraus
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(c) 2011 by Oliver Kraus (olikraus@gmail.com)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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Development goals:
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- English version
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- Optimized for 8 bit microcontroller
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Definitions:
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Short Name: y
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Long Name: year
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Range: 2000...
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Short Name: ydn
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Long Name: year day number
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Range: 1..366
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Short Name: cdn
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Long Name: century day number
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Range: 1...65535
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Short Name: ymd
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Long Name: Year, Month, Day
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Range: 2000...65535, 1..12, 1..31
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Conversions
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ymd --> y, ydn
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get_year_day_number()
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y, ydn --> ymd
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get_month_by_year_day_number()
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get_day_by_year_day_number()
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y, ydn --> cdn
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to_century_day_number();
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cdn --> y, ydn
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from_century_day_number();
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*/
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#ifndef _DATECALC_H
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#define _DATECALC_H
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#include <stdint.h>
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uint16_t get_year_day_number(uint16_t y, uint8_t m, uint8_t d);
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uint8_t get_month_by_year_day_number(uint16_t y, uint16_t ydn);
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uint8_t get_day_by_year_day_number(uint16_t y, uint16_t ydn);
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uint8_t get_weekday_by_year_day_number(uint16_t y, uint16_t ydn);
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uint16_t to_century_day_number(uint16_t y, uint16_t ydn);
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void from_century_day_number(uint16_t cdn, uint16_t *year, uint16_t *ydn);
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uint32_t to_time(uint16_t cdn, uint8_t h, uint8_t m, uint8_t s);
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void from_time(uint32_t t, uint16_t *cdn, uint8_t *h, uint8_t *m, uint8_t *s);
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uint32_t to_sec_since_2000(uint16_t y, uint8_t mo, uint8_t d, uint8_t h, uint8_t mi, uint8_t s);
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uint32_t to_minutes(uint16_t cdn, uint8_t h, uint8_t m);
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void from_minutes(uint32_t t, uint16_t *cdn, uint8_t *h, uint8_t *m);
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uint32_t to_minutes_since_2000(uint16_t y, uint8_t mo, uint8_t d, uint8_t h, uint8_t mi);
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#endif
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