Originální popis anglicky:
towctrans - wide-character transliteration
Návod, kniha: POSIX Programmer's Manual
#include <wctype.h>
wint_t towctrans(wint_t
wc, wctrans_t
desc );
The
towctrans() function shall transliterate the wide-character code
wc using the mapping described by
desc. The current setting of
the
LC_CTYPE category should be the same as during the call to
wctrans() that returned the value
desc. If the value of
desc is invalid (that is, not obtained by a call to
wctrans() or
desc is invalidated by a subsequent call to
setlocale() that has
affected category
LC_CTYPE ), the result is unspecified.
An application wishing to check for error situations should set
errno to
0 before calling
towctrans(). If
errno is non-zero on return, an
error has occurred.
If successful, the
towctrans() function shall return the mapped value of
wc using the mapping described by
desc. Otherwise, it shall
return
wc unchanged.
The
towctrans() function may fail if:
- EINVAL
- desc contains an invalid transliteration descriptor.
The following sections are informative.
None.
The strings
"tolower" and
"toupper" are
reserved for the standard mapping names. In the table below, the functions in
the left column are equivalent to the functions in the right column.
towlower(wc) towctrans(wc, wctrans("tolower"))
towupper(wc) towctrans(wc, wctrans("toupper"))
None.
None.
towlower() ,
towupper() ,
wctrans() , the Base Definitions
volume of IEEE Std 1003.1-2001,
<wctype.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
.
