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Standard C Library Functionswctrans(3C)


NAME

 wctrans - define character mapping

SYNOPSIS

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

DESCRIPTION

 

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 returns a value of type wctrans_t, which can be used as the second argument to subsequent calls of towctrans(3C). The wctrans() function determines 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() are valid until a call to setlocale(3C) that modifies the category LC_CTYPE.

RETURN VALUES

 

The wctrans() function returns 0 if the given character mapping name is not valid for the current locale (category LC_CTYPE), otherwise it returns a non-zero object of type wctrans_t that can be used in calls to towctrans(3C).

ERRORS

 

The wctrans() function may fail if:

EINVAL
The character mapping name pointed to by charclass is not valid in the current locale.

ATTRIBUTES

 

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE
MT-LevelMT-Safe with exceptions
CSIEnabled

SEE ALSO

 

setlocale(3C), towctrans(3C), attributes(5)


SunOS 5.9Go To TopLast Changed 20 Dec 1996

 
      
      
Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.