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34 .\" @(#)tolower.3 5.2 (Berkeley) 6/29/91
41 .Nd wide character case letter conversion utilities
47 .Fn towlower "wint_t wc"
49 .Fn towupper "wint_t wc"
53 function converts an upper-case wide character to the corresponding lower-case
57 function converts an lower-case wide character to the corresponding upper-case
60 If the argument is an upper/lower-case letter, the
62 function returns the corresponding counterpart if there is
63 one; otherwise the argument is returned unchanged.
68 The functions conform to