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