1WCTOB(3P)                  POSIX Programmer's Manual                 WCTOB(3P)
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PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
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NAME

13       wctob — wide-character to single-byte conversion
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SYNOPSIS

16       #include <stdio.h>
17       #include <wchar.h>
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19       int wctob(wint_t c);
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DESCRIPTION

22       The functionality described on this reference page is aligned with  the
23       ISO C  standard.  Any  conflict between the requirements described here
24       and the ISO C standard is unintentional. This  volume  of  POSIX.1‐2008
25       defers to the ISO C standard.
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27       The  wctob() function shall determine whether c corresponds to a member
28       of the extended character set whose character representation is a  sin‐
29       gle byte when in the initial shift state.
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31       The  behavior  of this function shall be affected by the LC_CTYPE cate‐
32       gory of the current locale.
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RETURN VALUE

35       The wctob() function shall return EOF if c does  not  correspond  to  a
36       character  with  length  one  in the initial shift state. Otherwise, it
37       shall return the single-byte representation of  that  character  as  an
38       unsigned char converted to int.
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ERRORS

41       No errors are defined.
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43       The following sections are informative.
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EXAMPLES

46       None.
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APPLICATION USAGE

49       None.
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RATIONALE

52       None.
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FUTURE DIRECTIONS

55       None.
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SEE ALSO

58       btowc()
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60       The Base Definitions volume of POSIX.1‐2008, <stdio.h>, <wchar.h>
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63       Portions  of  this text are reprinted and reproduced in electronic form
64       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
65       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
66       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
67       cal  and  Electronics  Engineers,  Inc  and  The  Open Group.  (This is
68       POSIX.1-2008 with the 2013 Technical Corrigendum  1  applied.)  In  the
69       event of any discrepancy between this version and the original IEEE and
70       The Open Group Standard, the original IEEE and The Open Group  Standard
71       is  the  referee document. The original Standard can be obtained online
72       at http://www.unix.org/online.html .
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74       Any typographical or formatting errors that appear  in  this  page  are
75       most likely to have been introduced during the conversion of the source
76       files to man page format. To report such errors,  see  https://www.ker‐
77       nel.org/doc/man-pages/reporting_bugs.html .
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81IEEE/The Open Group                  2013                            WCTOB(3P)
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