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`towctrans'--extensible wide-character case mapping
wint_t towctrans(wint_t C, wctrans_t W);
`towctrans' is a function which converts wide-characters based on a
specified translation type W. If the translation type is invalid or
cannot be applied to the current character, no change to the character
`towctrans' returns the translated equivalent of C when it is a valid
for the given translation, otherwise, it returns the input character.
When the translation type is invalid, `errno' is set `EINVAL'.
`towctrans' is C99.
No supporting OS subroutines are required.
Created Mon Nov 8 17:42:53 2004 on tillpc with info_to_html version 0.9.6.