wctob(3) [xfree86 man page]
WCTOB(3) Linux Programmer's Manual WCTOB(3) NAME
wctob - try to represent a wide character as a single byte SYNOPSIS
#include <wchar.h> int wctob(wint_t c); DESCRIPTION
The wctob() function tests whether the multibyte representation of the wide character c, starting in the initial state, consists of a sin- gle byte. If so, it is returned as an unsigned char. Never use this function. It cannot help you in writing internationalized programs. Internationalized programs must never distinguish sin- gle-byte and multibyte characters. RETURN VALUE
The wctob() function returns the single-byte representation of c, if it exists, of EOF otherwise. ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7). +----------+---------------+---------+ |Interface | Attribute | Value | +----------+---------------+---------+ |wctob() | Thread safety | MT-Safe | +----------+---------------+---------+ CONFORMING TO
POSIX.1-2001, POSIX.1-2008, C99. NOTES
The behavior of wctob() depends on the LC_CTYPE category of the current locale. This function should never be used. Internationalized programs must never distinguish single-byte and multibyte characters. Use either wctomb(3) or the thread-safe wcrtomb(3) instead. SEE ALSO
btowc(3), wcrtomb(3), wctomb(3) COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/. GNU
2017-09-15 WCTOB(3)
Check Out this Related Man Page
WCTOB(3P) POSIX Programmer's Manual WCTOB(3P) PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the correspond- ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux. NAME
wctob -- wide-character to single-byte conversion SYNOPSIS
#include <stdio.h> #include <wchar.h> int wctob(wint_t c); DESCRIPTION
The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of POSIX.1-2008 defers to the ISO C standard. The wctob() function shall determine whether c corresponds to a member of the extended character set whose character representation is a single byte when in the initial shift state. The behavior of this function shall be affected by the LC_CTYPE category of the current locale. RETURN VALUE
The wctob() function shall return EOF if c does not correspond to a character with length one in the initial shift state. Otherwise, it shall return the single-byte representation of that character as an unsigned char converted to int. ERRORS
No errors are defined. The following sections are informative. EXAMPLES
None. APPLICATION USAGE
None. RATIONALE
None. FUTURE DIRECTIONS
None. SEE ALSO
btowc() The Base Definitions volume of POSIX.1-2008, <stdio.h>, <wchar.h> COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technol- ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Stan- dard is the referee document. The original Standard can be obtained online at http://www.unix.org/online.html . Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html . IEEE
/The Open Group 2013 WCTOB(3P)