1STRSPN(3P)                 POSIX Programmer's Manual                STRSPN(3P)
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PROLOG

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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NAME

12       strspn - get length of a substring
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SYNOPSIS

15       #include <string.h>
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17       size_t strspn(const char *s1, const char *s2);
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DESCRIPTION

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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RETURN VALUE

26       The strspn() function shall return the length of s1; no return value is
27       reserved to indicate an error.
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ERRORS

30       No errors are defined.
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32       The following sections are informative.
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EXAMPLES

35       None.
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APPLICATION USAGE

38       None.
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RATIONALE

41       None.
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FUTURE DIRECTIONS

44       None.
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SEE ALSO

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)
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