TOUPPER(3) BSD Library Functions Manual TOUPPER(3)

NAME
     ttoouuppppeerr, ttoouuppppeerrll - lower case to upper case letter conversion

LLIIBBRRAARRYY
     Standard C Library (libc, -lc)

SYNOPSIS
     ##iinncclluuddee <>

     int
     ttoouuppppeerr(int c);

     ##iinncclluuddee <>

     int
     ttoouuppppeerrll(int c, localet loc);

DESCRIPTION
     The ttoouuppppeerr() function converts a lower-case letter to the corresponding
     upper-case letter.  For single C chars locales (see multibyte(3)) the
     value of the argument is representable as an unsigned char or the value
     of EOF.

     While the ttoouuppppeerr() function uses the current locale, the ttoouuppppeerrll()
     function may be passed a locale directly. See xlocale(3) for more infor-
     mation.

RETURN VALUES
     If the argument is a lower-case letter, the ttoouuppppeerr() function returns
     the corresponding upper-case letter if there is one; otherwise the argu-
     ment is returned unchanged.

CCOOMMPPAATTIIBBIILLIITTYY
     The 4.4BSD extension of accepting arguments outside of the range of the
     unsigned char type in locales with large character sets is considered
     obsolete and may not be supported in future releases.  The ttoowwuuppppeerr()
     function should be used instead.

SEE ALSO
     ctype(3), isupper(3), multibyte(3), towupper(3), xlocale(3)

STANDARDS     The ttoouuppppeerr() function conforms to ISO/IEC 9899:1990 (``ISO C90'').

BSD                             August 21, 2004                            BSD