Deleted Added
sdiff udiff text old ( 200470 ) new ( 205821 )
full compact
paskha.c (200470) paskha.c (205821)
1/*
1/*-
2 * Copyright (C) 1993-1996 by Andrey A. Chernov, Moscow, Russia.
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) 1993-1996 by Andrey A. Chernov, Moscow, Russia.
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/paskha.c 200470 2009-12-13 04:50:11Z delphij $");
28__FBSDID("$FreeBSD: head/usr.bin/calendar/paskha.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#define PASKHA "paskha"
37#define PASKHALEN (sizeof(PASKHA) - 1)
38
29
30#include <stdio.h>
31#include <stdlib.h>
32#include <string.h>
33
34#include "calendar.h"
35
36#define PASKHA "paskha"
37#define PASKHALEN (sizeof(PASKHA) - 1)
38
39static int paskha(int);
40
41/* return year day for Orthodox Easter using Gauss formula */
42/* (old style result) */
43
39/* return year day for Orthodox Easter using Gauss formula */
40/* (old style result) */
41
44static int
42int
45paskha(int R) /*year*/
46{
47 int a, b, c, d, e;
48 static int x = 15;
49 static int y = 6;
43paskha(int R) /*year*/
44{
45 int a, b, c, d, e;
46 static int x = 15;
47 static int y = 6;
48 int *cumday;
50
51 a = R % 19;
52 b = R % 4;
53 c = R % 7;
54 d = (19 * a + x) % 30;
55 e = (2 * b + 4 * c + 6 * d + y) % 7;
49
50 a = R % 19;
51 b = R % 4;
52 c = R % 7;
53 d = (19 * a + x) % 30;
54 e = (2 * b + 4 * c + 6 * d + y) % 7;
56 return (((cumdays[3] + 1) + 22) + (d + e));
55 cumday = cumdaytab[isleap(R)];
56 return (((cumday[3] + 1) + 22) + (d + e));
57}
57}
58
59/* return year day for Orthodox Easter depending days */
60
61int
62getpaskha(char *s, int year)
63{
64 int offset;
65
66 if (strncasecmp(s, PASKHA, PASKHALEN) == 0)
67 s += PASKHALEN;
68 else if (npaskha.name != NULL
69 && strncasecmp(s, npaskha.name, npaskha.len) == 0)
70 s += npaskha.len;
71 else
72 return 0;
73
74 /* Paskha+1 or Paskha-2
75 * ^ ^ */
76
77 switch (*s) {
78
79 case '-':
80 case '+':
81 offset = atoi(s);
82 break;
83
84 default:
85 offset = 0;
86 break;
87 }
88
89 return (paskha(year) + offset + 13 /* new style */);
90}