MirOS Manual: islower(3)

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

NAME

     islower - lower-case character test

SYNOPSIS

     #include <ctype.h>

     int
     islower(int c);

DESCRIPTION

     The islower() function tests for any lower-case letter for which none of
     iscntrl(3), isdigit(3), ispunct(3), or isspace(3) is true. In the C lo-
     cale, islower() returns true only for the characters defined as lower-
     case letters.

RETURN VALUES

     The islower() macro returns zero if the character tests false or non-zero
     if the character tests true.

SEE ALSO

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

STANDARDS

     The islower() function conforms to ANSI X3.159-1989 ("ANSI C").

CAVEATS

     The argument to islower() must be EOF or representable as an unsigned
     char; otherwise, the result is undefined.

MirOS BSD #10-current           June 29, 1991                                1

Generated on 2014-04-02 20:57:59 by $MirOS: src/scripts/roff2htm,v 1.79 2014/02/10 00:36:11 tg Exp $

These manual pages and other documentation are copyrighted by their respective writers; their source is available at our CVSweb, AnonCVS, and other mirrors. The rest is Copyright © 2002‒2014 The MirOS Project, Germany.
This product includes material provided by Thorsten Glaser.

This manual page’s HTML representation is supposed to be valid XHTML/1.1; if not, please send a bug report – diffs preferred.