NAME    [Toc]    [Back]

     tolower, _tolower - upper case to lower case letter  conversion

SYNOPSIS    [Toc]    [Back]

     #include <ctype.h>

     int
     tolower(int c);

     int
     _tolower(int c);

DESCRIPTION    [Toc]    [Back]

     The  tolower() function converts an upper-case letter to the
corresponding
     lower-case letter.  The _tolower() function is identical  to
tolower() except
 that c must be an upper-case letter.

RETURN VALUES    [Toc]    [Back]

     If  the  argument to the tolower() function is an upper-case
letter, the
     corresponding lower-case letter is returned if there is one;
otherwise
     the  argument is returned unchanged.  If the argument to the
_tolower()
     function is an upper-case letter, the  corresponding  lowercase letter is
     returned; otherwise the output is undefined.

SEE ALSO    [Toc]    [Back]

     isalnum(3),  isalpha(3), isascii(3), isblank(3), iscntrl(3),
isdigit(3),
     isgraph(3), islower(3), isprint(3), ispunct(3),  isspace(3),
isupper(3),
     isxdigit(3), stdio(3), toascii(3), toupper(3), ascii(7)

STANDARDS    [Toc]    [Back]

     The  tolower()  and  _tolower()  functions  conform  to ANSI
X3.159-1989
     (``ANSI C'').

OpenBSD     3.6                         August      15,      1997