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92 lines
No EOL
2.5 KiB
Objective-C
92 lines
No EOL
2.5 KiB
Objective-C
/* Copyright (C) 2023 Free Software Foundation, Inc.
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By: Benjamin Johnson
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Date: 19-3-2023
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This file is part of the GNUstep 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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110 USA.
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*/
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#import "GSCSVariable.h"
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#import <Foundation/Foundation.h>
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#ifndef _GS_CS_LINEAR_EXPRESSION_H
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#define _GS_CS_LINEAR_EXPRESSION_H
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@interface GSCSLinearExpression : NSObject <NSCopying>
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{
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NSMapTable *_terms;
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CGFloat _constant;
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NSMutableArray *_termVariables;
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}
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- (instancetype) initWithConstant: (CGFloat)constant;
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- (instancetype) initWithVariable: (GSCSVariable *)variable;
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- (instancetype) initWithVariable: (GSCSVariable *)variable
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coefficient: (CGFloat)value
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constant: (CGFloat)constant;
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- (instancetype) initWithVariables: (NSArray *)variables;
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- (CGFloat) constant;
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- (void) setConstant: (CGFloat)constant;
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- (NSMapTable *) terms;
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- (NSArray *) termVariables;
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- (NSNumber *) multiplierForTerm: (GSCSVariable *)variable;
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- (void) removeVariable: (GSCSVariable *)variable;
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- (void) multiplyConstantAndTermsBy: (CGFloat)value;
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- (void) divideConstantAndTermsBy: (CGFloat)value;
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- (CGFloat) coefficientForTerm: (GSCSVariable *)variable;
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- (CGFloat) newSubject: (GSCSVariable *)subject;
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- (void) addVariable: (GSCSVariable *)variable;
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- (void) addVariable: (GSCSVariable *)variable
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coefficient: (CGFloat)coefficient;
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- (void) addExpression: (GSCSLinearExpression *)expression;
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- (void) addExpression: (GSCSLinearExpression *)expression
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multiplier: (CGFloat)multiplier;
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- (NSArray *) findPivotableVariablesWithMostNegativeCoefficient;
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- (void) normalize;
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- (BOOL) isConstant;
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- (BOOL) isTermForVariable: (GSCSVariable *)variable;
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- (GSCSVariable *) anyPivotableVariable;
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- (NSArray *) externalVariables;
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- (BOOL) containsOnlyDummyVariables;
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@end
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#endif //_GS_CS_LINEAR_EXPRESSION_H |