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3.29 towlower—translate wide characters to lowercase

Synopsis

#include <wctype.h>
wint_t towlower(wint_t c);

Description
towlower is a function which converts uppercase wide characters to lowercase, leaving all other characters unchanged.


Returns
towlower returns the lowercase equivalent of c when it is a uppercase wide character; otherwise, it returns the input character.


Portability
towlower is C99.

No supporting OS subroutines are required.