//
//  DDErk23.h
//  ddetest
//
//  Created by Ashley on 25/03/2007.
//  Copyright 2007 __MyCompanyName__. All rights reserved.
//

#import <Foundation/Foundation.h>
#import "rhs_protocol.h"

@interface DDErk23 : NSObject {
	id _rhs;
	double *_k2;
	double *_k3;
	double *_k4;
}

- (id) initWithRhs:(id <rhs_protocol, NSObject>)rhs;
- (void) step:(double *)state newState:(double *)newState gradients:(double *)gradients newGradients:(double *)newGradients
			  error:(double *)error time:(double)t timeStep:(double)dt;
- (id <rhs_protocol, NSObject>) rhs;

@end