| ostern.c (200627) | ostern.c (205821) |
|---|---|
| 1/* | 1/*- |
| 2 * Copyright (c) 1996 Wolfram Schneider <wosch@FreeBSD.org>. Berlin. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. --- 10 unchanged lines hidden (view full) --- 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> | 2 * Copyright (c) 1996 Wolfram Schneider <wosch@FreeBSD.org>. Berlin. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. --- 10 unchanged lines hidden (view full) --- 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> |
| 28__FBSDID("$FreeBSD: head/usr.bin/calendar/ostern.c 200627 2009-12-17 08:41:06Z rse $"); | 28__FBSDID("$FreeBSD: head/usr.bin/calendar/ostern.c 205821 2010-03-29 06:49:20Z edwin $"); |
| 29 30#include <stdio.h> 31#include <stdlib.h> 32#include <string.h> 33 34#include "calendar.h" 35 36/* return year day for Easter */ --- 18 unchanged lines hidden (view full) --- 55 G = year % 19; 56 C = year / 100; 57 H = (C - C / 4 - (8 * C + 13) / 25 + 19 * G + 15) % 30; 58 I = H - (H / 28) * (1 - (H / 28) * (29 / (H + 1)) * ((21 - G) / 11)); 59 J = (year + year / 4 + I + 2 - C + C / 4) % 7; 60 61 L = I - J; 62 | 29 30#include <stdio.h> 31#include <stdlib.h> 32#include <string.h> 33 34#include "calendar.h" 35 36/* return year day for Easter */ --- 18 unchanged lines hidden (view full) --- 55 G = year % 19; 56 C = year / 100; 57 H = (C - C / 4 - (8 * C + 13) / 25 + 19 * G + 15) % 30; 58 I = H - (H / 28) * (1 - (H / 28) * (29 / (H + 1)) * ((21 - G) / 11)); 59 J = (year + year / 4 + I + 2 - C + C / 4) % 7; 60 61 L = I - J; 62 |
| 63 if (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0)) | 63 if (isleap(year)) |
| 64 return 31 + 29 + 21 + L + 7; 65 else 66 return 31 + 28 + 21 + L + 7; 67} | 64 return 31 + 29 + 21 + L + 7; 65 else 66 return 31 + 28 + 21 + L + 7; 67} |
| 68 69/* return year day for Easter or easter depending days 70 * Match: Easter([+-][0-9]+)? 71 * e.g: Easter-2 is Good Friday (2 days before Easter) 72 */ 73 74int 75geteaster(char *s, int year) 76{ 77 int offset = 0; 78 79#define EASTER "easter" 80#define EASTERNAMELEN (sizeof(EASTER) - 1) 81 82 if (strncasecmp(s, EASTER, EASTERNAMELEN) == 0) 83 s += EASTERNAMELEN; 84 else if (neaster.name != NULL 85 && strncasecmp(s, neaster.name, neaster.len) == 0) 86 s += neaster.len; 87 else 88 return (0); 89 90#ifdef DEBUG 91 printf("%s %d %d\n", s, year, EASTERNAMELEN); 92#endif 93 94 /* Easter+1 or Easter-2 95 * ^ ^ */ 96 97 switch (*s) { 98 99 case '-': 100 case '+': 101 offset = atoi(s); 102 break; 103 104 default: 105 offset = 0; 106 } 107 108 return (easter(year) + offset); 109} | |