TOLOWER(3) BSD Library Functions Manual TOLOWER(3)

NAME
     ttoolloowweerr, ttoolloowweerrll - upper case to lower case letter conversion

LLIIBBRRAARRYY
     Standard C Library (libc, -lc)

SYNOPSIS
     ##iinncclluuddee <>

     int
     ttoolloowweerr(int c);

     ##iinncclluuddee <>

     int
     ttoolloowweerrll(int c, localet loc);

DESCRIPTION
     The ttoolloowweerr() function converts an upper-case letter to the corresponding
     lower-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 ttoolloowweerr() function uses the current locale, the ttoolloowweerrll()
     function may be passed a locale directly. See xlocale(3) for more infor-
     mation.

RETURN VALUES
     If the argument is an upper-case letter, the ttoolloowweerr() function returns
     the corresponding lower-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 ttoowwlloowweerr()
     function should be used instead.

SEE ALSO
     ctype(3), islower(3), multibyte(3), towlower(3), xlocale(3)

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

BSD                             August 21, 2004                            BSD