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btowc (3)

btowc (3) ( Solaris man: Библиотечные вызовы )

btowc (3) ( FreeBSD man: Библиотечные вызовы )

btowc (3) ( Русские man: Библиотечные вызовы )

btowc (3) ( Linux man: Библиотечные вызовы )

>> btowc (3) ( POSIX man: Библиотечные вызовы )

NAME

btowc - single byte to wide character conversion

SYNOPSIS

#include <stdio.h>
#include <wchar.h>

wint_t btowc(int 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 IEEE Std 1003.1-2001 defers to the ISO C standard.

The btowc() function shall determine whether c constitutes a valid (one-byte) character 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 btowc() function shall return WEOF if c has the value EOF or if (unsigned char) c does not constitute a valid (one-byte) character in the initial shift state. Otherwise, it shall return the wide-character representation of that character.

ERRORS

No errors are defined.

The following sections are informative.

EXAMPLES

None.

APPLICATION USAGE

None.

RATIONALE

None.

FUTURE DIRECTIONS

None.

COPYRIGHT

Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. 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 Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .