1 '\" te
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  10 .TH WCTOMB 3C "Aug 14, 2002"
  11 .SH NAME
  12 wctomb \- convert a wide-character code to a character
  13 .SH SYNOPSIS
  14 .LP
  15 .nf
  16 #include <stdlib.h>
  17 
  18 \fBint\fR \fBwctomb\fR(\fBchar *\fR\fIs\fR, \fBwchar_t\fR \fIwchar\fR);
  19 .fi
  20 
  21 .SH DESCRIPTION
  22 .sp
  23 .LP
  24 The \fBwctomb()\fR function determines the number of bytes needed to represent
  25 the character corresponding to the wide-character code whose value is
  26 \fIwchar\fR. It stores the character representation (possibly multiple bytes)
  27 in the array object pointed to by \fIs\fR (if \fIs\fR is not a null pointer).
  28 At most \fBMB_CUR_MAX\fR bytes are stored.
  29 .sp
  30 .LP
  31 A call with \fIs\fR as a null pointer causes this function to return \fB0\fR.
  32 The behavior of this function is affected by the \fBLC_CTYPE\fR category of the
  33 current locale.
  34 .SH RETURN VALUES
  35 .sp
  36 .LP
  37 If \fIs\fR is a null pointer, \fBwctomb()\fR returns \fB0\fR value. If \fIs\fR
  38 is not a null pointer, \fBwctomb()\fR returns \fB\(mi1\fR if the value of
  39 \fIwchar\fR does not correspond to a valid character, or returns the number of
  40 bytes that constitute the character corresponding to the value of \fIwchar\fR.
  41 .sp
  42 .LP
  43 In no case will the value returned be greater than the value of the
  44 \fBMB_CUR_MAX\fR macro.
  45 .SH ERRORS
  46 .sp
  47 .LP
  48 No errors are defined.
  49 .SH USAGE
  50 .sp
  51 .LP
  52 The \fBwctomb()\fR function can be used safely in a multithreaded application,
  53 as long as \fBsetlocale\fR(3C) is not being called to change the locale.
  54 .SH ATTRIBUTES
  55 .sp
  56 .LP
  57 See \fBattributes\fR(5) for descriptions of the following attributes:
  58 .sp
  59 
  60 .sp
  61 .TS
  62 box;
  63 c | c
  64 l | l .
  65 ATTRIBUTE TYPE  ATTRIBUTE VALUE
  66 _
  67 CSI     Enabled
  68 _
  69 Interface Stability     Standard
  70 _
  71 MT-Level        MT-Safe with exceptions
  72 .TE
  73 
  74 .SH SEE ALSO
  75 .sp
  76 .LP
  77 \fBmblen\fR(3C), \fBmbstowcs\fR(3C), \fBmbtowc\fR(3C), \fBsetlocale\fR(3C),
  78 \fBwcstombs\fR(3C), \fBattributes\fR(5), \fBstandards\fR(5)