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1 | .\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) |
2 | .\" | |
93015253 | 3 | .\" %%%LICENSE_START(VERBATIM) |
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4 | .\" Permission is granted to make and distribute verbatim copies of this |
5 | .\" manual provided the copyright notice and this permission notice are | |
6 | .\" preserved on all copies. | |
7 | .\" | |
8 | .\" Permission is granted to copy and distribute modified versions of this | |
9 | .\" manual under the conditions for verbatim copying, provided that the | |
10 | .\" entire resulting derived work is distributed under the terms of a | |
11 | .\" permission notice identical to this one. | |
c13182ef | 12 | .\" |
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13 | .\" Since the Linux kernel and libraries are constantly changing, this |
14 | .\" manual page may be incorrect or out-of-date. The author(s) assume no | |
15 | .\" responsibility for errors or omissions, or for damages resulting from | |
16 | .\" the use of the information contained herein. The author(s) may not | |
17 | .\" have taken the same level of care in the production of this manual, | |
18 | .\" which is licensed free of charge, as they might when working | |
19 | .\" professionally. | |
c13182ef | 20 | .\" |
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21 | .\" Formatted or processed versions of this manual, if unaccompanied by |
22 | .\" the source, must acknowledge the copyright and authors of this work. | |
4b72fb64 | 23 | .\" %%%LICENSE_END |
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24 | .\" |
25 | .\" References consulted: | |
26 | .\" Linux libc source code | |
27 | .\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) | |
28 | .\" 386BSD man pages | |
29 | .\" Modified Sat Jul 24 17:57:50 1993 by Rik Faith (faith@cs.unc.edu) | |
460495ca | 30 | .TH STRSPN 3 2015-08-08 "" "Linux Programmer's Manual" |
fea681da | 31 | .SH NAME |
8a7ac774 | 32 | strspn, strcspn \- get length of a prefix substring |
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33 | .SH SYNOPSIS |
34 | .nf | |
35 | .B #include <string.h> | |
68e4db0a | 36 | .PP |
fea681da | 37 | .BI "size_t strspn(const char *" s ", const char *" accept ); |
68e4db0a | 38 | .PP |
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39 | .BI "size_t strcspn(const char *" s ", const char *" reject ); |
40 | .fi | |
41 | .SH DESCRIPTION | |
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42 | The |
43 | .BR strspn () | |
a00b7454 | 44 | function calculates the length (in bytes) of the initial |
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45 | segment of |
46 | .I s | |
47 | which consists entirely of bytes in | |
48 | .IR accept . | |
fea681da | 49 | .PP |
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50 | The |
51 | .BR strcspn () | |
52 | function calculates the length of the initial | |
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53 | segment of |
54 | .I s | |
55 | which consists entirely of bytes not in | |
56 | .IR reject . | |
47297adb | 57 | .SH RETURN VALUE |
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58 | The |
59 | .BR strspn () | |
a00b7454 | 60 | function returns the number of bytes in |
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61 | the initial segment of |
62 | .I s | |
63 | which consist only of bytes | |
64 | from | |
65 | .IR accept . | |
fea681da | 66 | .PP |
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67 | The |
68 | .BR strcspn () | |
a00b7454 | 69 | function returns the number of bytes in |
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70 | the initial segment of |
71 | .I s | |
72 | which are not in the string | |
73 | .IR reject . | |
6e16c203 | 74 | .SH ATTRIBUTES |
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75 | For an explanation of the terms used in this section, see |
76 | .BR attributes (7). | |
77 | .TS | |
78 | allbox; | |
79 | lbw19 lb lb | |
80 | l l l. | |
81 | Interface Attribute Value | |
82 | T{ | |
83 | .BR strspn (), | |
6e16c203 | 84 | .BR strcspn () |
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85 | T} Thread safety MT-Safe |
86 | .TE | |
47297adb | 87 | .SH CONFORMING TO |
856d2bd1 | 88 | POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD. |
47297adb | 89 | .SH SEE ALSO |
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90 | .BR index (3), |
91 | .BR memchr (3), | |
92 | .BR rindex (3), | |
93 | .BR strchr (3), | |
d095200e | 94 | .BR string (3), |
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95 | .BR strpbrk (3), |
96 | .BR strsep (3), | |
97 | .BR strstr (3), | |
1709027c | 98 | .BR strtok (3), |
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99 | .BR wcscspn (3), |
100 | .BR wcsspn (3) |