File: | mi/midash.c |
Location: | line 78, column 21 |
Description: | Division by zero |
1 | /*********************************************************** | |||
2 | ||||
3 | Copyright 1987, 1998 The Open Group | |||
4 | ||||
5 | Permission to use, copy, modify, distribute, and sell this software and its | |||
6 | documentation for any purpose is hereby granted without fee, provided that | |||
7 | the above copyright notice appear in all copies and that both that | |||
8 | copyright notice and this permission notice appear in supporting | |||
9 | documentation. | |||
10 | ||||
11 | The above copyright notice and this permission notice shall be included in | |||
12 | all copies or substantial portions of the Software. | |||
13 | ||||
14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |||
15 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |||
16 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |||
17 | OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN | |||
18 | AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |||
19 | CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |||
20 | ||||
21 | Except as contained in this notice, the name of The Open Group shall not be | |||
22 | used in advertising or otherwise to promote the sale, use or other dealings | |||
23 | in this Software without prior written authorization from The Open Group. | |||
24 | ||||
25 | Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts. | |||
26 | ||||
27 | All Rights Reserved | |||
28 | ||||
29 | Permission to use, copy, modify, and distribute this software and its | |||
30 | documentation for any purpose and without fee is hereby granted, | |||
31 | provided that the above copyright notice appear in all copies and that | |||
32 | both that copyright notice and this permission notice appear in | |||
33 | supporting documentation, and that the name of Digital not be | |||
34 | used in advertising or publicity pertaining to distribution of the | |||
35 | software without specific, written prior permission. | |||
36 | ||||
37 | DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING | |||
38 | ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL | |||
39 | DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR | |||
40 | ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |||
41 | WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, | |||
42 | ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | |||
43 | SOFTWARE. | |||
44 | ||||
45 | ******************************************************************/ | |||
46 | #ifdef HAVE_DIX_CONFIG_H1 | |||
47 | #include <dix-config.h> | |||
48 | #endif | |||
49 | ||||
50 | #include "regionstr.h" | |||
51 | #include "mistruct.h" | |||
52 | ||||
53 | void | |||
54 | miStepDash(int dist, /* distance to step */ | |||
55 | int *pDashIndex, /* current dash */ | |||
56 | unsigned char *pDash, /* dash list */ | |||
57 | int numInDashList, /* total length of dash list */ | |||
58 | int *pDashOffset /* offset into current dash */ | |||
59 | ) | |||
60 | { | |||
61 | int dashIndex, dashOffset; | |||
62 | int totallen; | |||
63 | int i; | |||
64 | ||||
65 | dashIndex = *pDashIndex; | |||
66 | dashOffset = *pDashOffset; | |||
67 | if (dist < pDash[dashIndex] - dashOffset) { | |||
| ||||
68 | *pDashOffset = dashOffset + dist; | |||
69 | return; | |||
70 | } | |||
71 | dist -= pDash[dashIndex] - dashOffset; | |||
72 | if (++dashIndex == numInDashList) | |||
73 | dashIndex = 0; | |||
74 | totallen = 0; | |||
75 | for (i = 0; i < numInDashList; i++) | |||
76 | totallen += pDash[i]; | |||
77 | if (totallen <= dist) | |||
78 | dist = dist % totallen; | |||
| ||||
79 | while (dist >= pDash[dashIndex]) { | |||
80 | dist -= pDash[dashIndex]; | |||
81 | if (++dashIndex == numInDashList) | |||
82 | dashIndex = 0; | |||
83 | } | |||
84 | *pDashIndex = dashIndex; | |||
85 | *pDashOffset = dist; | |||
86 | } |