man3/wcslen.3

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  10 .\" References consulted:
  11 .\"   GNU glibc-2 source code and manual
  12 .\"   Dinkumware C library reference http://www.dinkumware.com/
  13 .\"   OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html
  14 .\"   ISO/IEC 9899:1999
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  16 .TH WCSLEN 3  2019-03-06 "GNU" "Linux Programmer's Manual"
  17 .SH NAME
  18 wcslen \- determine the length of a wide-character string
  19 .SH SYNOPSIS
  20 .nf
  21 .B #include <wchar.h>
  22 .PP
  23 .BI "size_t wcslen(const wchar_t *" s );
  24 .fi
  25 .SH DESCRIPTION
  26 The
  27 .BR wcslen ()
  28 function is the wide-character equivalent
  29 of the
  30 .BR strlen (3)
  31 function.
  32 It determines the length of the wide-character string pointed to
  33 by
  34 .IR s ,
  35 excluding the terminating null wide character (L\(aq\e0\(aq).
  36 .SH RETURN VALUE
  37 The
  38 .BR wcslen ()
  39 function returns the
  40 number of wide characters in
  41 .IR s .
  42 .SH ATTRIBUTES
  43 For an explanation of the terms used in this section, see
  44 .BR attributes (7).
  45 .TS
  46 allbox;
  47 lb lb lb
  48 l l l.
  49 Interface       Attribute       Value
  50 T{
  51 .BR wcslen ()
  52 T}      Thread safety   MT-Safe
  53 .TE
  54 .SH CONFORMING TO
  55 POSIX.1-2001, POSIX.1-2008, C99.
  56 .SH SEE ALSO
  57 .BR strlen (3)