1<html lang="en"> 2<head> 3<title>wcsnlen - Untitled</title> 4<meta http-equiv="Content-Type" content="text/html"> 5<meta name="description" content="Untitled"> 6<meta name="generator" content="makeinfo 4.13"> 7<link title="Top" rel="start" href="index.html#Top"> 8<link rel="up" href="Wchar-strings.html#Wchar-strings" title="Wchar strings"> 9<link rel="prev" href="wcpncpy.html#wcpncpy" title="wcpncpy"> 10<link rel="next" href="wcspbrk.html#wcspbrk" title="wcspbrk"> 11<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> 12<meta http-equiv="Content-Style-Type" content="text/css"> 13<style type="text/css"><!-- 14 pre.display { font-family:inherit } 15 pre.format { font-family:inherit } 16 pre.smalldisplay { font-family:inherit; font-size:smaller } 17 pre.smallformat { font-family:inherit; font-size:smaller } 18 pre.smallexample { font-size:smaller } 19 pre.smalllisp { font-size:smaller } 20 span.sc { font-variant:small-caps } 21 span.roman { font-family:serif; font-weight:normal; } 22 span.sansserif { font-family:sans-serif; font-weight:normal; } 23--></style> 24<link rel="stylesheet" type="text/css" href="../cs.css"> 25</head> 26<body> 27<div class="node"> 28<a name="wcsnlen"></a> 29<p> 30Next: <a rel="next" accesskey="n" href="wcspbrk.html#wcspbrk">wcspbrk</a>, 31Previous: <a rel="previous" accesskey="p" href="wcpncpy.html#wcpncpy">wcpncpy</a>, 32Up: <a rel="up" accesskey="u" href="Wchar-strings.html#Wchar-strings">Wchar strings</a> 33<hr> 34</div> 35 36<h3 class="section">6.21 <code>wcsnlen</code>—get fixed-size wide-character string length</h3> 37 38<p><a name="index-wcsnlen-418"></a><strong>Synopsis</strong> 39<pre class="example"> #include <wchar.h> 40 size_t wcsnlen(const wchar_t *<var>s</var>, size_t <var>maxlen</var>); 41 42</pre> 43 <p><strong>Description</strong><br> 44The <code>wcsnlen</code> function computes the number of wide-character codes 45in the wide-character string pointed to by <var>s</var> not including the 46terminating L'\0' wide character but at most <var>maxlen</var> wide 47characters. 48 49 <p><br> 50<strong>Returns</strong><br> 51<code>wcsnlen</code> returns the length of <var>s</var> if it is less then <var>maxlen</var>, 52or <var>maxlen</var> if there is no L'\0' wide character in first <var>maxlen</var> 53characters. 54 55 <p><br> 56<strong>Portability</strong><br> 57<code>wcsnlen</code> is a GNU extension. 58 59 <p><code>wcsnlen</code> requires no supporting OS subroutines. 60 61 <p><br> 62 63 </body></html> 64 65