man3/wcscspn.3

   1 .\" Copyright (c) Bruno Haible <haible@clisp.cons.org>
   2 .\"
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   8 .\" References consulted:
   9 .\"   GNU glibc-2 source code and manual
  10 .\"   Dinkumware C library reference http://www.dinkumware.com/
  11 .\"   OpenGroup's Single Unix specification http://www.UNIX-systems.org/online.html
  12 .\"   ISO/IEC 9899:1999
  13 .\"
  14 .TH WCSCSPN 3  1999-07-25 "GNU" "Linux Programmer's Manual"
  15 .SH NAME
  16 wcscspn \- search a wide-character string for any of a set of wide characters
  17 .SH SYNOPSIS
  18 .nf
  19 .B #include <wchar.h>
  20 .sp
  21 .BI "size_t wcscspn(const wchar_t *" wcs ", const wchar_t *" reject );
  22 .fi
  23 .SH DESCRIPTION
  24 The \fBwcscspn\fP() function is the wide-character equivalent
  25 of the \fBstrcspn\fP(3) function.
  26 It determines the length of the longest initial segment of \fIwcs\fP
  27 which consists entirely of wide-characters not listed in \fIreject\fP.
  28 In
  29 other words, it searches for the first occurrence in the wide-character
  30 string \fIwcs\fP of any of the characters in the wide-character string
  31 \fIreject\fP.
  32 .SH "RETURN VALUE"
  33 The \fBwcscspn\fP() function returns the number of
  34 wide characters in the longest
  35 initial segment of \fIwcs\fP which consists entirely of wide-characters not
  36 listed in \fIreject\fP.
  37 In other words, it returns the position of the first
  38 occurrence in the wide-character string \fIwcs\fP
  39 of any of the characters in
  40 the wide-character string \fIreject\fP,
  41 or \fIwcslen(wcs)\fP if there is none.
  42 .SH "CONFORMING TO"
  43 C99.
  44 .SH "SEE ALSO"
  45 .BR strcspn (3),
  46 .BR wcspbrk (3),
  47 .BR wcsspn (3)