home *** CD-ROM | disk | FTP | other *** search
-
- (*
- * Copyright 1987, 1989 Samuel H. Smith; All rights reserved
- *
- * This is a component of the ProDoor System.
- * Do not distribute modified versions without my permission.
- * Do not remove or alter this notice or any other copyright notice.
- * If you use this in your own program you must distribute source code.
- * Do not use any of this in a commercial product.
- *
- *)
-
- (*
- * byteflag.inc - Library to manipulate flag bits in a byte
- *
- *)
-
- (* --------------------------------------------------------- *)
- function getbbit(bits: byte; bitval: byte): boolean;
- {return true/false for specified is set}
- begin
- getbbit := (bits and bitval) <> 0;
- end;
-
- (* --------------------------------------------------------- *)
- procedure setbbit(var bits: byte; bitval: byte; value: boolean);
- {set the specified bit in a bitmap}
- begin
- if value then
- bits := bits or bitval
- else
- bits := bits and (255 - bitval);
- end;
-
-
-