Name

wctrans — wide-character translation mapping

Synopsis

        #include <wctype.h>
wctrans_t wctrans( const char *name);
 

DESCRIPTION

The wctrans_t type represents a mapping which can map a wide character to another wide character. Its nature is implementation-dependent, but the special value (wctrans_t) 0 denotes an invalid mapping. Nonzero wctrans_t values can be passed to the towctrans(3) function to actually perform the wide-character mapping.

The wctrans() function returns a mapping, given by its name. The set of valid names depends on the LC_CTYPE category of the current locale, but the following names are valid in all locales.

    "tolower" − realizes the 
tolower(3)
mapping
    "toupper" − realizes the 
toupper(3)
mapping

RETURN VALUE

The wctrans() function returns a mapping descriptor if the name is valid. Otherwise, it returns (wctrans_t) 0.

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).

Interface Attribute Value
wctrans() Thread safety MT-Safe locale

CONFORMING TO

POSIX.1-2001, POSIX.1-2008, C99.

NOTES

The behavior of wctrans() depends on the LC_CTYPE category of the current locale.

SEE ALSO

towctrans(3)

COLOPHON

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  Copyright (c) Bruno Haible <haibleclisp.cons.org>

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References consulted:
  GNU glibc-2 source code and manual
  Dinkumware C library reference http://www.dinkumware.com/
  OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html
  ISO/IEC 9899:1999