1 '\" te
   2 .\" Copyright 2014 Garrett D'Amore <garrett@damore.org>
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  11 .TH GETWC 3C "Jul 11, 2014"
  12 .SH NAME
  13 getwc, getwc_l \- get wide character from a stream
  14 .SH SYNOPSIS
  15 .LP
  16 .nf
  17 #include <stdio.h>
  18 #include <wchar.h>
  19 
  20 \fBwint_t\fR \fBgetwc\fR(\fBFILE\fR \fI*stream\fR);
  21 .fi
  22 .LP
  23 .nf
  24 #include <stdio.h>
  25 #include <wchar.h>
  26 #include <xlocale.h>
  27 
  28 \fBwint_t\fR \fBgetwc_l\fR(\fBFILE\fR \fI*stream\fR, \fBlocale_t\fR \fIloc\fR);
  29 .fi
  30 
  31 .SH DESCRIPTION
  32 .sp
  33 .LP
  34 The \fBgetwc()\fR function is equivalent to \fBfgetwc\fR(3C), except that if it
  35 is implemented as a macro it may evaluate \fIstream\fR more than once, so the
  36 argument should never be an expression with side effects.
  37 .LP
  38 The \fBgetwc_l()\fR function is similar to \fBgetwc()\fR, except instead of
  39 acting on the current locale, it uses the locale specified by \fIloc\fR.
  40 .SH RETURN VALUES
  41 .LP
  42 Refer to \fBfgetwc\fR(3C).
  43 .SH ERRORS
  44 .LP
  45 Refer to \fBfgetwc\fR(3C).
  46 .SH USAGE
  47 .LP
  48 This interface is provided to align with some current implementations and with
  49 possible future \fBISO\fR standards.
  50 .LP
  51 Because they may be implemented as macros, these functions may treat incorrectly
  52 a \fIstream\fR argument with side effects.  In particular,
  53 \fBgetwc\fR(*\fIf\fR\|++) may not work as expected.  Therefore, use of these
  54 functions is not recommended; \fBfgetwc\fR(3C) and \fBfgetwc_l\fR(3C)
  55 should be used instead.
  56 .SH ATTRIBUTES
  57 .LP
  58 See \fBattributes\fR(5) for descriptions of the following attributes:
  59 .TS
  60 box;
  61 c | c
  62 l | l .
  63 ATTRIBUTE TYPE  ATTRIBUTE VALUE
  64 _
  65 Interface Stability     See below.
  66 _
  67 MT-Level        MT-Safe
  68 .TE
  69 
  70 .LP
  71 The
  72 .B getwc()
  73 function is Standard.  The
  74 .B getwc_l()
  75 function is Uncommitted.
  76 .SH SEE ALSO
  77 .LP
  78 \fBfgetwc\fR(3C), \fBnewlocale\fR(3C), \fBsetlocale\fR(3C), \fBuselocale\fR(3C),
  79 \fBattributes\fR(5), \fBstandards\fR(5)