Initial revision

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@1 72102866-910b-0410-8b05-ffd578937521

Source/Magnitude.m

@@ -0,0 +1,95 @@
+/* Implementation for Objective-C Magnitude object
+   Copyright (C) 1993,1994 Free Software Foundation, Inc.
+
+   Written by:  R. Andrew McCallum <mccallum@gnu.ai.mit.edu>
+   Date: May 1993
+
+   This file is part of the GNU Objective C Class Library.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+   
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not, write to the Free
+   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/ 
+
+#include <objects/stdobjects.h>
+#include <objects/Magnitude.h>
+
+/* These methods accesses no instance variables.  It is exactly the kind
+   of thing that should be a "behavior" associated with a protocol.
+   i.e. #3 on Steve Naroff's wish list. */
+
+@implementation Magnitude
+
+/* - (int) compare: anObject; is inherited from Object */
+
+- (BOOL) greaterThan: anObject
+{
+  if ([self compare:anObject] > 0)
+    return YES;
+  else
+    return NO;
+}
+
+- (BOOL) greaterThanOrEqual: anObject
+{
+  if ([self compare:anObject] >= 0)
+    return YES;
+  else
+    return NO;
+}
+
+
+- (BOOL) lessThan: anObject
+{
+  if ([self compare:anObject] < 0)
+    return YES;
+  else
+    return NO;
+}
+
+- (BOOL) lessThanOrEqual: anObject
+{
+  if ([self compare:anObject] <= 0)
+    return YES;
+  else
+    return NO;
+}
+
+
+- (BOOL) between: firstObject and: secondObject
+{
+  if ([self compare:firstObject] >= 0
+      && [self compare:secondObject] <= 0)
+    return YES;
+  else
+    return NO;
+}
+
+
+- maximum: anObject
+{
+  if ([self compare:anObject] >= 0)
+    return self;
+  else
+    return anObject;
+}
+
+- minimum: anObject
+{
+  if ([self compare:anObject] <= 0)
+    return self;
+  else
+    return anObject;
+}
+
+@end