1STRSPN(3P) POSIX Programmer's Manual STRSPN(3P)
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6 This manual page is part of the POSIX Programmer's Manual. The Linux
7 implementation of this interface may differ (consult the corresponding
8 Linux manual page for details of Linux behavior), or the interface may
9 not be implemented on Linux.
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12 strspn - get length of a substring
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15 #include <string.h>
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17 size_t strspn(const char *s1, const char *s2);
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21 The strspn() function shall compute the length (in bytes) of the maxi‐
22 mum initial segment of the string pointed to by s1 which consists
23 entirely of bytes from the string pointed to by s2.
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26 The strspn() function shall return the length of s1; no return value is
27 reserved to indicate an error.
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30 No errors are defined.
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32 The following sections are informative.
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35 None.
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38 None.
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41 None.
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47 strcspn(), the Base Definitions volume of IEEE Std 1003.1-2001,
48 <string.h>
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51 Portions of this text are reprinted and reproduced in electronic form
52 from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
53 -- Portable Operating System Interface (POSIX), The Open Group Base
54 Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
55 Electrical and Electronics Engineers, Inc and The Open Group. In the
56 event of any discrepancy between this version and the original IEEE and
57 The Open Group Standard, the original IEEE and The Open Group Standard
58 is the referee document. The original Standard can be obtained online
59 at http://www.opengroup.org/unix/online.html .
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63IEEE/The Open Group 2003 STRSPN(3P)