towlower - wide character case letter conversion utilities
Standard C Library (libc, -lc)
#include <wctype.h>
wint_t
towlower(wint_t wc);
wint_t
towupper(wint_t wc);
The towlower() function converts an upper-case wide character to the corresponding
lower-case letter. The towupper() function converts an lowercase
wide character to the corresponding upper-case letter.
If the argument is an upper/lower-case letter, the tolower() function
returns the corresponding counterpart if there is one; otherwise the
argument is returned unchanged.
tolower(3), toupper(3)
The functions conform to .
BSD December 22, 2000 BSD
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