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Man Pages


Manual Reference Pages  -  WCTRANS (3)

NAME

towctrans, wctrans - wide character mapping functions

CONTENTS

Library
Synopsis
Description
Return Values
Examples
Errors
See Also
Standards
History

LIBRARY


.Lb libc

SYNOPSIS


.In wctype.h wint_t towctrans wint_t wc wctrans_t desc wctrans_t wctrans const char *charclass

DESCRIPTION

The wctrans function returns a value of type
.Vt wctrans_t which represents the requested wide character mapping operation and may be used as the second argument for calls to towctrans.

The following character mapping names are recognised:
tolower        toupper

The towctrans function transliterates the wide character wc according to the mapping described by desc.

RETURN VALUES

The towctrans function returns the transliterated character if successful, otherwise it returns the character unchanged and sets errno.

The wctrans function returns non-zero if successful, otherwise it returns zero and sets errno.

EXAMPLES

Reimplement towupper in terms of towctrans and wctrans:
wint_t
mytowupper(wint_t wc)
{
        return (towctrans(wc, wctrans("toupper")));
}

ERRORS

The towctrans function will fail if:
[EINVAL]
  The supplied desc argument is invalid.

The wctrans function will fail if:
[EINVAL]
  The requested mapping name is invalid.

SEE ALSO

tolower(3), toupper(3), wctype(3)

STANDARDS

The towctrans and wctrans functions conform to -p1003.1-2001.

HISTORY

The towctrans and wctrans functions first appeared in
.Fx 5.0 .
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