Originální popis anglicky:
towlower - transliterate uppercase wide-character code to lowercase
Návod, kniha: POSIX Programmer's Manual
#include <wctype.h>
wint_t towlower(wint_t
wc);
The
towlower() function has as a domain a type
wint_t, the value
of which the application shall ensure is a character representable as a
wchar_t, and a wide-character code corresponding to a valid character
in the current locale or the value of WEOF. If the argument has any other
value, the behavior is undefined. If the argument of
towlower()
represents an uppercase wide-character code, and there exists a corresponding
lowercase wide-character code (as defined by character type information in the
program locale category
LC_CTYPE ), the result shall be the
corresponding lowercase wide-character code. All other arguments in the domain
are returned unchanged.
Upon successful completion,
towlower() shall return the lowercase letter
corresponding to the argument passed; otherwise, it shall return the argument
unchanged.
No errors are defined.
The following sections are informative.
None.
None.
None.
None.
setlocale() , the Base Definitions volume of
IEEE Std 1003.1-2001, Chapter 7, Locale,
<wctype.h>,
<wchar.h>
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
.
