'\" te
.\"  Copyright (c) 1996, Sun Microsystems, Inc.  All Rights Reserved
.TH wstring 3C "29 Dec 1996" "SunOS 5.11" "Standard C Library Functions"
.SH NAME
wstring, wscasecmp, wsncasecmp, wsdup, wscol \- Process Code string operations
.SH SYNOPSIS
.LP
.nf
#include <widec.h> 

\fBint\fR \fBwscasecmp\fR(\fBconst wchar_t *\fR\fIs1\fR, \fBconst wchar_t *\fR\fIs2\fR);
.fi

.LP
.nf
\fBint\fR \fBwsncasecmp\fR(\fBconst wchar_t *\fR\fIs1\fR, \fBconst wchar_t *\fR\fIs2\fR, \fBint\fR \fIn\fR);
.fi

.LP
.nf
\fBwchar_t *\fR\fBwsdup\fR(\fBconst wchar_t *\fR\fIs\fR);
.fi

.LP
.nf
\fBint\fR \fBwscol\fR(\fBconst wchar_t *\fR\fIs\fR);
.fi

.SH DESCRIPTION
.sp
.LP
These functions operate on Process Code strings terminated by \fBwchar_t\fR null characters.  During appending or copying, these routines do not check for an overflow condition of the receiving string. In the following, \fIs\fR, \fIs1\fR, and \fIs2\fR point to Process Code strings terminated by a \fBwchar_t\fR null.
.SS "wscasecmp(\|), wsncasecmp(\|)"
.sp
.LP
The \fBwscasecmp()\fR function compares its arguments, ignoring case, and returns an integer greater than, equal to, or less than 0, depending upon whether \fIs1\fR is lexicographically greater than, equal to, or less than \fIs2\fR. It makes the same comparison but compares at most \fIn\fR Process Code characters. The four Extended Unix Code (EUC) codesets are ordered from lowest to highest as 0, 2, 3, 1 when characters from different codesets are compared.
.SS "wsdup(\|)"
.sp
.LP
The \fBwsdup()\fR function returns a pointer to a new Process Code string, which is a duplicate of the string pointed to by \fIs\fR. The space for the new string is obtained using \fBmalloc\fR(3C). If the new string cannot be created, a null pointer is returned.
.SS "wscol(\|)"
.sp
.LP
The \fBwscol()\fR function returns the screen display width (in columns) of the Process Code string \fIs\fR.
.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
tab() box;
lw(2.75i) lw(2.75i) 
lw(2.75i) lw(2.75i) 
.
\fBATTRIBUTE TYPE\fR\fBATTRIBUTE VALUE\fR
MT-LevelMT-Safe
.TE

.SH SEE ALSO
.sp
.LP
\fBmalloc\fR(3C), \fBstring\fR(3C), \fBwcstring\fR(3C), \fBattributes\fR(5)