ascend/integrator/aww.c

/*  ASCEND modelling environment
    Copyright (C) 2006 Carnegie Mellon University

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2, or (at your option)
    any later version.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.
*//** @file
    C-code implementation of Art Westerberg's DAE integrator
*//*
    by John Pye, Dec 2006.
*/

#include <ascend/utilities/config.h>
#include <ascend/utilities/ascConfig.h>
#include <ascend/utilities/ascPanic.h>
#include "aww.h"

const IntegratorInternals integrator_aww_internals = {
    integrator_aww_create
    ,integrator_aww_params_default
    ,integrator_aww_analyse
    ,integrator_aww_solve
    ,NULL /* writematrixfn */
    ,NULL /* debugfn */
    ,integrator_aww_free
    ,INTEG_AWW
    ,"AWW"
};

typedef struct{
    unsigned nothing;
}  IntegratorAWWData;

/*-------------------------------------------------------------
  PARAMETERS FOR AWW INTEGRATOR
*/

enum aww_parameters{
    AWW_PARAM_METHOD
    ,AWW_PARAM_RTOL
    ,AWW_PARAMS_SIZE
};

enum aww_methods{
    AWW_BDF
    ,AWW_AM
};
    
/**
    Here the full set of parameters is defined, along with upper/lower bounds,
    etc. The values are stuck into the blsys->params structure.

    @return 0 on success
*/
int integrator_aww_params_default(IntegratorSystem *blsys){
    asc_assert(blsys!=NULL);
    asc_assert(blsys->engine==INTEG_AWW);
    slv_parameters_t *p;
    p = &(blsys->params);

    slv_destroy_parms(p);

    if(p->parms==NULL){
        CONSOLE_DEBUG("params NULL");
        p->parms = ASC_NEW_ARRAY(struct slv_parameter, AWW_PARAMS_SIZE);
        if(p->parms==NULL)return -1;
        p->dynamic_parms = 1;
    }else{
        CONSOLE_DEBUG("params not NULL");
    }

    /* reset the number of parameters to zero so that we can check it at the end */
    p->num_parms = 0;

    slv_param_char(p,AWW_PARAM_METHOD
            ,(SlvParameterInitChar){{"method"
            ,"Stepping method",1
            ,"See Art's notes, sec. 15.2"
        }, "BDF"}, (char *[]){"BDF","AM",NULL}
    );

    slv_param_real(p,AWW_PARAM_RTOL
            ,(SlvParameterInitReal){{"rtol"
            ,"Scalar relative error tolerance",1
            ,"Value of the scalar relative error tolerance."
        }, 1e-4, 0, DBL_MAX }
    );

    asc_assert(p->num_parms == AWW_PARAMS_SIZE);

    CONSOLE_DEBUG("Created %d params", p->num_parms);

    return 0;
}

void integrator_aww_create(IntegratorSystem *blsys){
    CONSOLE_DEBUG("ALLOCATING AWW ENGINE DATA");
    IntegratorAWWData *enginedata;
    enginedata = ASC_NEW(IntegratorAWWData);
    enginedata->nothing = 0;
    blsys->enginedata = (void *)enginedata;
    integrator_aww_params_default(blsys);
}

void integrator_aww_free(void *enginedata){
    CONSOLE_DEBUG("DELETING AWW ENGINE DATA");
    IntegratorAWWData *d = (IntegratorAWWData *)enginedata;
    ASC_FREE(d);
}

/** return 1 on success */
int integrator_aww_analyse(IntegratorSystem *blsys){
    return 0;
}

/** return 0 on success */
int integrator_aww_solve(IntegratorSystem *blsys
        , unsigned long start_index, unsigned long finish_index
){
    double initstep, maxstep, rtol;
    unsigned maxsubsteps;
    const char *methodname;

    // solve initial point

    // run valuesForInit
    // run specifyForInit
    // solve with QRSlv
    // if not converged throw error

    // 'DELETE SYSTEM'
    // run valuesForStep
    // run specifyForStep
    
    initstep = integrator_get_stepzero(blsys);
    maxstep = integrator_get_maxstep(blsys);
    maxsubsteps = integrator_get_maxsubsteps(blsys);
    rtol = SLV_PARAM_REAL(&(blsys->params),AWW_PARAM_RTOL);

    methodname = SLV_PARAM_CHAR(&(blsys->params),AWW_PARAM_METHOD);
    CONSOLE_DEBUG("ASSIGNING STEPPING METHOD '%s'",methodname);
    
    enum aww_methods method;
    if(strcmp(methodname,"BDF")==0)method = AWW_BDF;
    else if(strcmp(methodname,"AM")==0)method = AWW_AM;
    else{
        ERROR_REPORTER_HERE(ASC_USER_ERROR,"Invalid method name '%s'",methodname);
    }

    /* initialise the integrator reporter */
    integrator_output_init(blsys);

    // while not too many solver calls {
    //    capture plotting points
    //    do something with polynomials
    //    for(i=0; i<= poly_oder; ++i){
    //      if(!in the final step){
    //          if(!have hit stopping configtion) UN 'stepX'
    //          SOLVE with QRSlv
    //          if(!converged)abort 'failed to convert
    //      }
    //      if(in the final step)abort 'STOP reached'
    //      RUN setStopConditions
    //      retrieve status of stop confitions
    //      retureve status of 'last step'
    //    }
    //    compute maximum steps for each variable
    // }

    ERROR_REPORTER_HERE(ASC_PROG_ERR,"Not implemented");
    return 1;
}

1	/* ASCEND modelling environment
2	Copyright (C) 2006 Carnegie Mellon University
3
4	This program is free software; you can redistribute it and/or modify
5	it under the terms of the GNU General Public License as published by
6	the Free Software Foundation; either version 2, or (at your option)
7	any later version.
8
9	This program is distributed in the hope that it will be useful,
10	but WITHOUT ANY WARRANTY; without even the implied warranty of
11	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12	GNU General Public License for more details.
13
14	You should have received a copy of the GNU General Public License
15	along with this program; if not, write to the Free Software
16	Foundation, Inc., 59 Temple Place - Suite 330,
17	Boston, MA 02111-1307, USA.
18	//* @file
19	C-code implementation of Art Westerberg's DAE integrator
20	//
21	by John Pye, Dec 2006.
22	*/
23
24	#include <ascend/utilities/config.h>
25	#include <ascend/utilities/ascConfig.h>
26	#include <ascend/utilities/ascPanic.h>
27	#include "aww.h"
28
29	const IntegratorInternals integrator_aww_internals = {
30	integrator_aww_create
31	,integrator_aww_params_default
32	,integrator_aww_analyse
33	,integrator_aww_solve
34	,NULL /* writematrixfn */
35	,NULL /* debugfn */
36	,integrator_aww_free
37	,INTEG_AWW
38	,"AWW"
39	};
40
41	typedef struct{
42	unsigned nothing;
43	} IntegratorAWWData;
44
45	/*-------------------------------------------------------------
46	PARAMETERS FOR AWW INTEGRATOR
47	*/
48
49	enum aww_parameters{
50	AWW_PARAM_METHOD
51	,AWW_PARAM_RTOL
52	,AWW_PARAMS_SIZE
53	};
54
55	enum aww_methods{
56	AWW_BDF
57	,AWW_AM
58	};
59
60	/**
61	Here the full set of parameters is defined, along with upper/lower bounds,
62	etc. The values are stuck into the blsys->params structure.
63
64	@return 0 on success
65	*/
66	int integrator_aww_params_default(IntegratorSystem *blsys){
67	asc_assert(blsys!=NULL);
68	asc_assert(blsys->engine==INTEG_AWW);
69	slv_parameters_t *p;
70	p = &(blsys->params);
71
72	slv_destroy_parms(p);
73
74	if(p->parms==NULL){
75	CONSOLE_DEBUG("params NULL");
76	p->parms = ASC_NEW_ARRAY(struct slv_parameter, AWW_PARAMS_SIZE);
77	if(p->parms==NULL)return -1;
78	p->dynamic_parms = 1;
79	}else{
80	CONSOLE_DEBUG("params not NULL");
81	}
82
83	/* reset the number of parameters to zero so that we can check it at the end */
84	p->num_parms = 0;
85
86	slv_param_char(p,AWW_PARAM_METHOD
87	,(SlvParameterInitChar){{"method"
88	,"Stepping method",1
89	,"See Art's notes, sec. 15.2"
90	}, "BDF"}, (char *[]){"BDF","AM",NULL}
91	);
92
93	slv_param_real(p,AWW_PARAM_RTOL
94	,(SlvParameterInitReal){{"rtol"
95	,"Scalar relative error tolerance",1
96	,"Value of the scalar relative error tolerance."
97	}, 1e-4, 0, DBL_MAX }
98	);
99
100	asc_assert(p->num_parms == AWW_PARAMS_SIZE);
101
102	CONSOLE_DEBUG("Created %d params", p->num_parms);
103
104	return 0;
105	}
106
107	void integrator_aww_create(IntegratorSystem *blsys){
108	CONSOLE_DEBUG("ALLOCATING AWW ENGINE DATA");
109	IntegratorAWWData *enginedata;
110	enginedata = ASC_NEW(IntegratorAWWData);
111	enginedata->nothing = 0;
112	blsys->enginedata = (void *)enginedata;
113	integrator_aww_params_default(blsys);
114	}
115
116	void integrator_aww_free(void *enginedata){
117	CONSOLE_DEBUG("DELETING AWW ENGINE DATA");
118	IntegratorAWWData d = (IntegratorAWWData )enginedata;
119	ASC_FREE(d);
120	}
121
122	/** return 1 on success */
123	int integrator_aww_analyse(IntegratorSystem *blsys){
124	return 0;
125	}
126
127	/** return 0 on success */
128	int integrator_aww_solve(IntegratorSystem *blsys
129	, unsigned long start_index, unsigned long finish_index
130	){
131	double initstep, maxstep, rtol;
132	unsigned maxsubsteps;
133	const char *methodname;
134
135	// solve initial point
136
137	// run valuesForInit
138	// run specifyForInit
139	// solve with QRSlv
140	// if not converged throw error
141
142	// 'DELETE SYSTEM'
143	// run valuesForStep
144	// run specifyForStep
145
146	initstep = integrator_get_stepzero(blsys);
147	maxstep = integrator_get_maxstep(blsys);
148	maxsubsteps = integrator_get_maxsubsteps(blsys);
149	rtol = SLV_PARAM_REAL(&(blsys->params),AWW_PARAM_RTOL);
150
151	methodname = SLV_PARAM_CHAR(&(blsys->params),AWW_PARAM_METHOD);
152	CONSOLE_DEBUG("ASSIGNING STEPPING METHOD '%s'",methodname);
153
154	enum aww_methods method;
155	if(strcmp(methodname,"BDF")==0)method = AWW_BDF;
156	else if(strcmp(methodname,"AM")==0)method = AWW_AM;
157	else{
158	ERROR_REPORTER_HERE(ASC_USER_ERROR,"Invalid method name '%s'",methodname);
159	}
160
161	/* initialise the integrator reporter */
162	integrator_output_init(blsys);
163
164	// while not too many solver calls {
165	// capture plotting points
166	// do something with polynomials
167	// for(i=0; i<= poly_oder; ++i){
168	// if(!in the final step){
169	// if(!have hit stopping configtion) UN 'stepX'
170	// SOLVE with QRSlv
171	// if(!converged)abort 'failed to convert
172	// }
173	// if(in the final step)abort 'STOP reached'
174	// RUN setStopConditions
175	// retrieve status of stop confitions
176	// retureve status of 'last step'
177	// }
178	// compute maximum steps for each variable
179	// }
180
181	ERROR_REPORTER_HERE(ASC_PROG_ERR,"Not implemented");
182	return 1;
183	}
184