tolower man page on 4.4BSD

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

NAME
     tolower — upper case to lower case letter conversion

SYNOPSIS
     #include <ctype.h>

     int
     tolower(int c);

DESCRIPTION
     The tolower() function converts an upper-case letter to the corresponding
     lower-case letter.

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

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

STANDARDS
     The tolower() function conforms to ANSI X3.159-1989 (“ANSI C89”).

BSD				 June 4, 1993				   BSD
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