RELEASE/1.2debug-cidebug-ci-sanitisersfaster-cavernloglog-selectstereowalls-datawalls-data-hanging-as-warning
Last change
on this file since a49bcbff was
85696c3,
checked in by Olly Betts <olly@…>, 9 years ago
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src/datain.c,src/date.c,src/date.h: Calculate the Julian date to use
for the declination properly.
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-
Property mode set to
100644
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File size:
1.1 KB
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Rev | Line | |
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[f351ea24] | 1 | /* date.h |
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| 2 | * Routines for date handling |
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[85696c3] | 3 | * Copyright (C) 2010,2015 Olly Betts |
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[f351ea24] | 4 | * |
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| 5 | * This program is free software; you can redistribute it and/or modify |
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| 6 | * it under the terms of the GNU General Public License as published by |
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| 7 | * the Free Software Foundation; either version 2 of the License, or |
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| 8 | * (at your option) any later version. |
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| 9 | * |
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| 10 | * This program is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | * GNU General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU General Public License |
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| 16 | * along with this program; if not, write to the Free Software |
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| 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 18 | */ |
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| 19 | |
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| 20 | #ifdef __cplusplus |
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| 21 | extern "C" { |
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| 22 | #endif |
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| 23 | |
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| 24 | extern int is_leap_year(int year); |
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| 25 | |
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| 26 | /* Return last day for given month of given year. */ |
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| 27 | int last_day(int year, int month); |
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| 28 | |
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| 29 | int days_since_1900(int y, int m, int d); |
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| 30 | |
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| 31 | void ymd_from_days_since_1900(int days, int * py, int * pm, int * pd); |
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| 32 | |
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[85696c3] | 33 | double julian_date_from_days_since_1900(int days); |
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| 34 | |
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[f351ea24] | 35 | #ifdef __cplusplus |
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| 36 | } |
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| 37 | #endif |
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