Originální popis anglicky:
wctrans - define character mapping
Návod, kniha: POSIX Programmer's Manual
#include <wctype.h>
wctrans_t wctrans(const char *
charclass);
The
wctrans() function is defined for valid character mapping names
identified in the current locale. The
charclass is a string identifying
a generic character mapping name for which codeset-specific information is
required. The following character mapping names are defined in all locales:
tolower and
toupper.
The function shall return a value of type
wctrans_t, which can be used as
the second argument to subsequent calls of
towctrans(). The
wctrans() function shall determine values of
wctrans_t according
to the rules of the coded character set defined by character mapping
information in the program's locale (category
LC_CTYPE ). The values
returned by
wctrans() shall be valid until a call to
setlocale()
that modifies the category
LC_CTYPE .
The
wctrans() function shall return 0 and may set
errno to
indicate the error if the given character mapping name is not valid
for the current locale (category
LC_CTYPE ); otherwise, it shall return
a non-zero object of type
wctrans_t that can be used in calls to
towctrans().
The
wctrans() function may fail if:
- EINVAL
- The character mapping name pointed to by charclass
is not valid in the current locale.
The following sections are informative.
None.
None.
None.
None.
towctrans() , 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
.
