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File: [local] / src / usr.bin / calendar / paskha.c (download)
Revision 1.7, Sun Mar 15 00:41:28 2015 UTC (9 years, 3 months ago) by millert
tzfile.h is an internal header that should never have been installed. What's worse, the tzfile.h that gets installed is over 20 years old and doesn't match the real tzfile.h in libc/time. This makes the tree safe for /usr/include/tzfile.h removal. The TM_YEAR_BASE define has been moved to time.h temporarily until its usage is replaced by 1900 in the tree. Actual removal of tzfile.h is pending a ports build. Based on a diff from deraadt@ |
/* $OpenBSD: paskha.c,v 1.7 2015/03/15 00:41:28 millert Exp $ */ /* * Copyright (C) 1993-1996 by Andrey A. Chernov, Moscow, Russia. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <stdio.h> #include "calendar.h" /* return year day for Orthodox Easter using Gauss formula */ /* (new style result); subtract 13 for old style */ int paskha(int R) /*year*/ { int a, b, c, d, e; static int x = 15; static int y = 6; int cumdays; a = R % 19; b = R % 4; c = R % 7; d = (19*a + x) % 30; e = (2*b + 4*c + 6*d + y) % 7; cumdays = 31 + 28; if (isleap(R)) cumdays++; return ((cumdays + 22) + (d + e) + 13); }