MirBSD manpage: tolower(3), _tolower(3)

TOLOWER(3)                 BSD Programmer's Manual                  TOLOWER(3)

NAME

     tolower, _tolower - upper case to lower case letter conversion

SYNOPSIS

     #include <ctype.h>

     int
     tolower(int c);

     int
     _tolower(int c);

DESCRIPTION

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

RETURN VALUES

     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 lower-case letter is
     returned; otherwise the output is undefined.

SEE ALSO

     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

     The tolower() and _tolower() functions conform to ANSI X3.159-1989 ("ANSI
     C89").

MirBSD #10-current             August 15, 1997                               1