1 '\" te
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  10 .TH GETWC 3C "Jul 24, 2002"
  11 .SH NAME
  12 getwc, getwc_l \- get wide character from a stream
  13 .SH SYNOPSIS
  14 .LP
  15 .nf
  16 #include <stdio.h>
  17 #include <wchar.h>
  18 
  19 \fBwint_t\fR \fBgetwc\fR(\fBFILE\fR \fI*stream\fR);
  20 \fBwint_t\fR \fBgetwc_l\fR(\fBFILE\fR \fI*stream\fR, \fBlocale_t\fR \fIloc\fR);
  21 .fi
  22 
  23 .SH DESCRIPTION
  24 .sp
  25 .LP
  26 The \fBgetwc()\fR function is equivalent to \fBfgetwc\fR(3C), except that if it
  27 is implemented as a macro it may evaluate \fIstream\fR more than once, so the
  28 argument should never be an expression with side effects. The
  29 \fBgetwc_l\fR function is similar to \fBfgetwc\fR, except instead of
  30 acting on the current locale as specified by \fBsetlocale\fR(3C) and
  31 \fBuselocale\fR(3C), it uses the locale specified by \fIloc\fR.
  32 .SH RETURN VALUES
  33 .sp
  34 .LP
  35 Refer to \fBfgetwc\fR(3C).
  36 .SH ERRORS
  37 .sp
  38 .LP
  39 Refer to \fBfgetwc\fR(3C).
  40 .SH USAGE
  41 .sp
  42 .LP
  43 This interface is provided to align with some current implementations and with
  44 possible future \fBISO\fR standards.
  45 .sp
  46 .LP
  47 Because it may be implemented as a macro, \fBgetwc()\fR may treat incorrectly a
  48 \fIstream\fR argument with side effects.  In particular,
  49 \fBgetwc\fR(*\fIf\fR\|++) may not work as expected.  Therefore, use of this
  50 function is not recommended; \fBfgetwc\fR(3C) should be used instead.
  51 .SH ATTRIBUTES
  52 .sp
  53 .LP
  54 See \fBattributes\fR(5) for descriptions of the following attributes:
  55 .sp
  56 
  57 .sp
  58 .TS
  59 box;
  60 c | c
  61 l | l .
  62 ATTRIBUTE TYPE  ATTRIBUTE VALUE
  63 _
  64 Interface Stability     Standard
  65 _
  66 MT-Level        MT-Safe
  67 .TE
  68 
  69 .SH SEE ALSO
  70 .sp
  71 .LP
  72 \fBfgetwc\fR(3C), \fBsetlocale\fR(3C), \fBuselocale\fR(3C), \fBattributes\fR(5), \fBstandards\fR(5)