wconv(3S)

NAME
     wconv: towupper, towlower  - translate characters

SYNOPSIS
     #include <ctype.h>
     #include <widec.h>
     #include <wctype.h>
     win_t towupper(win_t c);
     win_t towlower(win_t c);

DESCRIPTION
     If the argument to towupper represents a lowercase letter of the ASCII or
     supplementary code sets, the result is the corresponding uppercase
     letter.  If the argument to towlower represents an uppercase letter of
     the ASCII or supplementary code sets, the result is the corresponding
     lowercase letter.

     In the case of all other arguments, the return value is unchanged.  The
     table used for translation is generated by wchrtbl(1M).

SEE ALSO
     wchrtbl(1M), conv(3C), wctype(3S).