Mercurial > octave
annotate libinterp/corefcn/dasrt.cc @ 20940:48b2ad5ee801
maint: Rename oct-obj.[cc|h] to ovl.[cc|h] for clarity.
* libinterp/corefcn/oct-obj.h: Replaced. Contains a #warning issued if used in
compilation and includes "ovl.h" instead. Original file renamed to
libinterp/octave-value/ovl.h
* libinterp/corefcn/oct-obj.cc: Renamed to libinterp/octave-value/ovl.cc.
* oct-obj.cc (ovl ()): Added new function to return empty octave_value_list.
* libinterp/corefcn/module.mk: Remove oct-obj.cc from build system.
* libinterp/octave-value/module.mk: Add ovl.h and ovl.cc to build system.
* mk-opts.pl, annotation-dialog.h, Cell.cc, __contourc__.cc, __dsearchn__.cc,
__lin_interpn__.cc, __pchip_deriv__.cc, __qp__.cc, balance.cc, besselj.cc,
betainc.cc, colloc.cc, conv2.cc, daspk.cc, dasrt.cc, dassl.cc, data.cc,
debug.cc, defaults.cc, defun.cc, det.cc, dirfns.cc, dlmread.cc, eig.cc,
error.cc, fft.cc, fft2.cc, fftn.cc, file-io.cc, filter.cc, find.cc,
gammainc.cc, gcd.cc, getgrent.cc, getpwent.cc, getrusage.cc, givens.cc,
graphics.cc, gripes.cc, help.cc, hess.cc, hex2num.cc, hook-fcn.h, input.cc,
input.h, inv.cc, kron.cc, load-save.cc, lookup.cc, ls-hdf5.cc, ls-mat-ascii.cc,
ls-mat4.cc, ls-mat5.cc, ls-oct-binary.cc, ls-oct-text.cc, lsode.cc, lu.cc,
luinc.cc, max.cc, mex.cc, oct-hist.cc, oct-lvalue.cc, oct-lvalue.h, oct-map.h,
oct-stream.cc, oct.h, ordschur.cc, pager.cc, pinv.cc, pr-output.cc, quad.cc,
quadcc.cc, qz.cc, rand.cc, rcond.cc, regexp.cc, schur.cc, sparse-xpow.cc,
strfns.cc, sub2ind.cc, svd.cc, sylvester.cc, symtab.h, syscalls.cc, sysdep.cc,
time.cc, toplev.cc, tril.cc, tsearch.cc, typecast.cc, urlwrite.cc, utils.cc,
variables.cc, xpow.cc, __delaunayn__.cc, __glpk__.cc, __voronoi__.cc,
audiodevinfo.cc, audioread.cc, chol.cc, convhulln.cc, dmperm.cc, qr.cc,
symbfact.cc, mkbuiltins, ov-base-diag.h, ov-base-int.cc, ov-base-mat.cc,
ov-base-mat.h, ov-base-scalar.cc, ov-base-sparse.cc, ov-base-sparse.h,
ov-base.cc, ov-bool-mat.cc, ov-bool.cc, ov-builtin.cc, ov-cell.cc, ov-colon.cc,
ov-complex.cc, ov-cs-list.h, ov-cx-mat.cc, ov-dld-fcn.cc, ov-fcn.cc, ov-fcn.h,
ov-float.cc, ov-flt-complex.cc, ov-flt-cx-mat.cc, ov-flt-re-mat.cc,
ov-int16.cc, ov-int32.cc, ov-int64.cc, ov-int8.cc, ov-java.h, ov-mex-fcn.cc,
ov-perm.h, ov-range.cc, ov-re-mat.cc, ov-scalar.cc, ov-str-mat.cc,
ov-uint16.cc, ov-uint32.cc, ov-uint64.cc, ov-uint8.cc, ov-usr-fcn.cc,
ov-usr-fcn.h, ov.cc, octave.cc, op-b-b.cc, op-b-bm.cc, op-b-sbm.cc, op-bm-b.cc,
op-bm-bm.cc, op-bm-sbm.cc, op-cdm-cdm.cc, op-cell.cc, op-chm.cc, op-class.cc,
op-cm-cm.cc, op-cm-cs.cc, op-cm-m.cc, op-cm-s.cc, op-cm-scm.cc, op-cm-sm.cc,
op-cs-cm.cc, op-cs-cs.cc, op-cs-m.cc, op-cs-s.cc, op-cs-scm.cc, op-cs-sm.cc,
op-dm-dm.cc, op-dm-scm.cc, op-dm-sm.cc, op-double-conv.cc, op-fcdm-fcdm.cc,
op-fcdm-fdm.cc, op-fcm-fcm.cc, op-fcm-fcs.cc, op-fcm-fm.cc, op-fcm-fs.cc,
op-fcn.cc, op-fcs-fcm.cc, op-fcs-fcs.cc, op-fcs-fm.cc, op-fcs-fs.cc,
op-fdm-fdm.cc, op-float-conv.cc, op-fm-fcm.cc, op-fm-fcs.cc, op-fm-fm.cc,
op-fm-fs.cc, op-fs-fcm.cc, op-fs-fcs.cc, op-fs-fm.cc, op-fs-fs.cc,
op-i16-i16.cc, op-i32-i32.cc, op-i64-i64.cc, op-i8-i8.cc, op-int-concat.cc,
op-int-conv.cc, op-m-cm.cc, op-m-cs.cc, op-m-m.cc, op-m-s.cc, op-m-scm.cc,
op-m-sm.cc, op-pm-pm.cc, op-pm-scm.cc, op-pm-sm.cc, op-range.cc, op-s-cm.cc,
op-s-cs.cc, op-s-m.cc, op-s-s.cc, op-s-scm.cc, op-s-sm.cc, op-sbm-b.cc,
op-sbm-bm.cc, op-sbm-sbm.cc, op-scm-cm.cc, op-scm-cs.cc, op-scm-m.cc,
op-scm-s.cc, op-scm-scm.cc, op-scm-sm.cc, op-sm-cm.cc, op-sm-cs.cc, op-sm-m.cc,
op-sm-s.cc, op-sm-scm.cc, op-sm-sm.cc, op-str-m.cc, op-str-s.cc, op-str-str.cc,
op-struct.cc, op-ui16-ui16.cc, op-ui32-ui32.cc, op-ui64-ui64.cc, op-ui8-ui8.cc,
parse.h, pt-arg-list.cc, pt-assign.cc, pt-binop.cc, pt-cbinop.cc, pt-cell.cc,
pt-colon.cc, pt-const.cc, pt-eval.h, pt-fcn-handle.cc, pt-funcall.h, pt-id.cc,
pt-idx.cc, pt-jump.cc, pt-mat.cc, pt-select.cc, pt-unop.cc, token.cc,
Array-sym.cc: replace '#include "oct-obj.h"' with '#include "ovl.h"'.
author | Rik <rik@octave.org> |
---|---|
date | Fri, 18 Dec 2015 16:04:56 -0800 |
parents | 6f0bd96f93c0 |
children | 9db35d2042be |
rev | line source |
---|---|
3990 | 1 /* |
2 | |
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3 Copyright (C) 2002-2015 John W. Eaton |
3990 | 4 |
5 This file is part of Octave. | |
6 | |
7 Octave is free software; you can redistribute it and/or modify it | |
8 under the terms of the GNU General Public License as published by the | |
7016 | 9 Free Software Foundation; either version 3 of the License, or (at your |
10 option) any later version. | |
3990 | 11 |
12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 for more details. | |
16 | |
17 You should have received a copy of the GNU General Public License | |
7016 | 18 along with Octave; see the file COPYING. If not, see |
19 <http://www.gnu.org/licenses/>. | |
3990 | 20 |
21 */ | |
22 | |
23 #ifdef HAVE_CONFIG_H | |
24 #include <config.h> | |
25 #endif | |
26 | |
4052 | 27 #include <iostream> |
3990 | 28 #include <string> |
29 | |
30 #include "DASRT.h" | |
31 #include "lo-mappers.h" | |
32 | |
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33 #include "defun.h" |
3990 | 34 #include "error.h" |
35 #include "gripes.h" | |
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36 #include "ovl.h" |
3990 | 37 #include "ov-fcn.h" |
5729 | 38 #include "ov-cell.h" |
3990 | 39 #include "pager.h" |
40 #include "parse.h" | |
41 #include "unwind-prot.h" | |
42 #include "utils.h" | |
43 #include "variables.h" | |
44 | |
3998 | 45 #include "DASRT-opts.cc" |
46 | |
4115 | 47 // Global pointers for user defined function required by dasrt. |
3990 | 48 static octave_function *dasrt_f; |
49 static octave_function *dasrt_j; | |
50 static octave_function *dasrt_cf; | |
51 | |
4140 | 52 // Have we warned about imaginary values returned from user function? |
53 static bool warned_fcn_imaginary = false; | |
54 static bool warned_jac_imaginary = false; | |
55 static bool warned_cf_imaginary = false; | |
56 | |
3990 | 57 // Is this a recursive call? |
58 static int call_depth = 0; | |
59 | |
60 static ColumnVector | |
4628 | 61 dasrt_user_f (const ColumnVector& x, const ColumnVector& xdot, |
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62 double t, octave_idx_type&) |
3990 | 63 { |
64 ColumnVector retval; | |
65 | |
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66 assert (x.numel () == xdot.numel ()); |
3990 | 67 |
4628 | 68 octave_value_list args; |
3990 | 69 |
3993 | 70 args(2) = t; |
4628 | 71 args(1) = xdot; |
72 args(0) = x; | |
3990 | 73 |
74 if (dasrt_f) | |
75 { | |
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76 octave_value_list tmp; |
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77 |
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78 try |
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79 { |
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80 tmp = dasrt_f->do_multi_index_op (1, args); |
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81 } |
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82 catch (octave_execution_exception& e) |
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83 { |
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84 gripe_user_supplied_eval (e, "dasrt"); |
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85 } |
3990 | 86 |
87 if (tmp.length () > 0 && tmp(0).is_defined ()) | |
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88 { |
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89 if (! warned_fcn_imaginary && tmp(0).is_complex_type ()) |
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90 { |
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91 warning ("dasrt: ignoring imaginary part returned from user-supplied function"); |
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92 warned_fcn_imaginary = true; |
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93 } |
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95 retval = tmp(0).vector_value (); |
3990 | 96 |
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97 if (retval.numel () == 0) |
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98 gripe_user_supplied_eval ("dasrt"); |
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99 } |
3990 | 100 else |
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101 gripe_user_supplied_eval ("dasrt"); |
3990 | 102 } |
103 | |
104 return retval; | |
105 } | |
106 | |
107 static ColumnVector | |
108 dasrt_user_cf (const ColumnVector& x, double t) | |
109 { | |
110 ColumnVector retval; | |
111 | |
112 octave_value_list args; | |
113 | |
114 args(1) = t; | |
4628 | 115 args(0) = x; |
3990 | 116 |
117 if (dasrt_cf) | |
118 { | |
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119 octave_value_list tmp; |
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120 |
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121 try |
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122 { |
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123 tmp = dasrt_cf->do_multi_index_op (1, args); |
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124 } |
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125 catch (octave_execution_exception& e) |
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126 { |
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127 gripe_user_supplied_eval (e, "dasrt"); |
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128 } |
3990 | 129 |
130 if (tmp.length () > 0 && tmp(0).is_defined ()) | |
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131 { |
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132 if (! warned_cf_imaginary && tmp(0).is_complex_type ()) |
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133 { |
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134 warning ("dasrt: ignoring imaginary part returned from user-supplied constraint function"); |
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135 warned_cf_imaginary = true; |
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136 } |
4140 | 137 |
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138 retval = tmp(0).vector_value (); |
3990 | 139 |
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140 if (retval.numel () == 0) |
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141 gripe_user_supplied_eval ("dasrt"); |
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142 } |
3990 | 143 else |
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144 gripe_user_supplied_eval ("dasrt"); |
3990 | 145 } |
146 | |
147 return retval; | |
148 } | |
149 | |
150 static Matrix | |
3993 | 151 dasrt_user_j (const ColumnVector& x, const ColumnVector& xdot, |
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152 double t, double cj) |
3990 | 153 { |
154 Matrix retval; | |
155 | |
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156 assert (x.numel () == xdot.numel ()); |
3990 | 157 |
3993 | 158 octave_value_list args; |
159 | |
160 args(3) = cj; | |
161 args(2) = t; | |
4628 | 162 args(1) = xdot; |
163 args(0) = x; | |
3990 | 164 |
3993 | 165 if (dasrt_j) |
166 { | |
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167 octave_value_list tmp; |
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168 |
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169 try |
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170 { |
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171 tmp = dasrt_j->do_multi_index_op (1, args); |
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172 } |
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173 catch (octave_execution_exception& e) |
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174 { |
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175 gripe_user_supplied_eval (e, "dasrt"); |
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176 } |
3990 | 177 |
3993 | 178 int tlen = tmp.length (); |
179 if (tlen > 0 && tmp(0).is_defined ()) | |
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180 { |
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181 if (! warned_jac_imaginary && tmp(0).is_complex_type ()) |
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182 { |
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183 warning ("dasrt: ignoring imaginary part returned from user-supplied jacobian function"); |
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184 warned_jac_imaginary = true; |
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185 } |
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187 retval = tmp(0).matrix_value (); |
3990 | 188 |
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189 if (retval.numel () == 0) |
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190 gripe_user_supplied_eval ("dasrt"); |
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191 } |
3990 | 192 else |
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193 gripe_user_supplied_eval ("dasrt"); |
3990 | 194 } |
195 | |
196 return retval; | |
197 } | |
198 | |
199 #define DASRT_ABORT \ | |
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200 return retval |
3990 | 201 |
202 #define DASRT_ABORT1(msg) \ | |
203 do \ | |
204 { \ | |
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205 error ("dasrt: " msg); \ |
3990 | 206 DASRT_ABORT; \ |
207 } \ | |
208 while (0) | |
209 | |
210 #define DASRT_ABORT2(fmt, arg) \ | |
211 do \ | |
212 { \ | |
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213 error ("dasrt: " fmt, arg); \ |
3990 | 214 DASRT_ABORT; \ |
215 } \ | |
216 while (0) | |
217 | |
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218 DEFUN (dasrt, args, nargout, |
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219 "-*- texinfo -*-\n\ |
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220 @deftypefn {} {[@var{x}, @var{xdot}, @var{t_out}, @var{istat}, @var{msg}] =} dasrt (@var{fcn}, [], @var{x_0}, @var{xdot_0}, @var{t})\n\ |
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221 @deftypefnx {} {@dots{} =} dasrt (@var{fcn}, @var{g}, @var{x_0}, @var{xdot_0}, @var{t})\n\ |
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222 @deftypefnx {} {@dots{} =} dasrt (@var{fcn}, [], @var{x_0}, @var{xdot_0}, @var{t}, @var{t_crit})\n\ |
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223 @deftypefnx {} {@dots{} =} dasrt (@var{fcn}, @var{g}, @var{x_0}, @var{xdot_0}, @var{t}, @var{t_crit})\n\ |
4115 | 224 Solve the set of differential-algebraic equations\n\ |
225 @tex\n\ | |
4852 | 226 $$ 0 = f (x, \\dot{x}, t) $$\n\ |
4115 | 227 with\n\ |
228 $$ x(t_0) = x_0, \\dot{x}(t_0) = \\dot{x}_0 $$\n\ | |
229 @end tex\n\ | |
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230 @ifnottex\n\ |
3990 | 231 \n\ |
232 @example\n\ | |
4852 | 233 0 = f (x, xdot, t)\n\ |
4115 | 234 @end example\n\ |
235 \n\ | |
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236 @noindent\n\ |
4115 | 237 with\n\ |
238 \n\ | |
239 @example\n\ | |
240 x(t_0) = x_0, xdot(t_0) = xdot_0\n\ | |
3990 | 241 @end example\n\ |
242 \n\ | |
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243 @end ifnottex\n\ |
4115 | 244 with functional stopping criteria (root solving).\n\ |
245 \n\ | |
246 The solution is returned in the matrices @var{x} and @var{xdot},\n\ | |
247 with each row in the result matrices corresponding to one of the\n\ | |
248 elements in the vector @var{t_out}. The first element of @var{t}\n\ | |
249 should be @math{t_0} and correspond to the initial state of the\n\ | |
250 system @var{x_0} and its derivative @var{xdot_0}, so that the first\n\ | |
251 row of the output @var{x} is @var{x_0} and the first row\n\ | |
252 of the output @var{xdot} is @var{xdot_0}.\n\ | |
253 \n\ | |
254 The vector @var{t} provides an upper limit on the length of the\n\ | |
255 integration. If the stopping condition is met, the vector\n\ | |
256 @var{t_out} will be shorter than @var{t}, and the final element of\n\ | |
257 @var{t_out} will be the point at which the stopping condition was met,\n\ | |
258 and may not correspond to any element of the vector @var{t}.\n\ | |
259 \n\ | |
8787 | 260 The first argument, @var{fcn}, is a string, inline, or function handle\n\ |
261 that names the function @math{f} to call to compute the vector of\n\ | |
262 residuals for the set of equations. It must have the form\n\ | |
3990 | 263 \n\ |
264 @example\n\ | |
4115 | 265 @var{res} = f (@var{x}, @var{xdot}, @var{t})\n\ |
3990 | 266 @end example\n\ |
267 \n\ | |
268 @noindent\n\ | |
4115 | 269 in which @var{x}, @var{xdot}, and @var{res} are vectors, and @var{t} is a\n\ |
270 scalar.\n\ | |
271 \n\ | |
8787 | 272 If @var{fcn} is a two-element string array or a two-element cell array\n\ |
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273 of strings, inline functions, or function handles, the first element names\n\ |
8787 | 274 the function @math{f} described above, and the second element names a\n\ |
275 function to compute the modified Jacobian\n\ | |
3990 | 276 \n\ |
4115 | 277 @tex\n\ |
278 $$\n\ | |
279 J = {\\partial f \\over \\partial x}\n\ | |
280 + c {\\partial f \\over \\partial \\dot{x}}\n\ | |
281 $$\n\ | |
282 @end tex\n\ | |
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283 @ifnottex\n\ |
3990 | 284 \n\ |
4115 | 285 @example\n\ |
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286 @group\n\ |
4115 | 287 df df\n\ |
288 jac = -- + c ------\n\ | |
289 dx d xdot\n\ | |
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290 @end group\n\ |
4115 | 291 @end example\n\ |
292 \n\ | |
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293 @end ifnottex\n\ |
4115 | 294 \n\ |
295 The modified Jacobian function must have the form\n\ | |
296 \n\ | |
297 @example\n\ | |
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298 @group\n\ |
3990 | 299 \n\ |
4115 | 300 @var{jac} = j (@var{x}, @var{xdot}, @var{t}, @var{c})\n\ |
301 \n\ | |
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302 @end group\n\ |
4115 | 303 @end example\n\ |
3990 | 304 \n\ |
4115 | 305 The optional second argument names a function that defines the\n\ |
306 constraint functions whose roots are desired during the integration.\n\ | |
307 This function must have the form\n\ | |
3990 | 308 \n\ |
4115 | 309 @example\n\ |
310 @var{g_out} = g (@var{x}, @var{t})\n\ | |
311 @end example\n\ | |
3990 | 312 \n\ |
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313 @noindent\n\ |
4115 | 314 and return a vector of the constraint function values.\n\ |
10840 | 315 If the value of any of the constraint functions changes sign, @sc{dasrt}\n\ |
4115 | 316 will attempt to stop the integration at the point of the sign change.\n\ |
317 \n\ | |
318 If the name of the constraint function is omitted, @code{dasrt} solves\n\ | |
4852 | 319 the same problem as @code{daspk} or @code{dassl}.\n\ |
3990 | 320 \n\ |
4115 | 321 Note that because of numerical errors in the constraint functions\n\ |
10840 | 322 due to round-off and integration error, @sc{dasrt} may return false\n\ |
4115 | 323 roots, or return the same root at two or more nearly equal values of\n\ |
324 @var{T}. If such false roots are suspected, the user should consider\n\ | |
325 smaller error tolerances or higher precision in the evaluation of the\n\ | |
326 constraint functions.\n\ | |
3990 | 327 \n\ |
4115 | 328 If a root of some constraint function defines the end of the problem,\n\ |
10840 | 329 the input to @sc{dasrt} should nevertheless allow integration to a\n\ |
330 point slightly past that root, so that @sc{dasrt} can locate the root\n\ | |
4115 | 331 by interpolation.\n\ |
3990 | 332 \n\ |
4115 | 333 The third and fourth arguments to @code{dasrt} specify the initial\n\ |
334 condition of the states and their derivatives, and the fourth argument\n\ | |
335 specifies a vector of output times at which the solution is desired,\n\ | |
336 including the time corresponding to the initial condition.\n\ | |
337 \n\ | |
338 The set of initial states and derivatives are not strictly required to\n\ | |
10840 | 339 be consistent. In practice, however, @sc{dassl} is not very good at\n\ |
4115 | 340 determining a consistent set for you, so it is best if you ensure that\n\ |
341 the initial values result in the function evaluating to zero.\n\ | |
3990 | 342 \n\ |
4115 | 343 The sixth argument is optional, and may be used to specify a set of\n\ |
344 times that the DAE solver should not integrate past. It is useful for\n\ | |
345 avoiding difficulties with singularities and points where there is a\n\ | |
346 discontinuity in the derivative.\n\ | |
3990 | 347 \n\ |
4115 | 348 After a successful computation, the value of @var{istate} will be\n\ |
10840 | 349 greater than zero (consistent with the Fortran version of @sc{dassl}).\n\ |
4115 | 350 \n\ |
351 If the computation is not successful, the value of @var{istate} will be\n\ | |
352 less than zero and @var{msg} will contain additional information.\n\ | |
3990 | 353 \n\ |
354 You can use the function @code{dasrt_options} to set optional\n\ | |
355 parameters for @code{dasrt}.\n\ | |
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356 @seealso{dasrt_options, daspk, dasrt, lsode}\n\ |
5642 | 357 @end deftypefn") |
3990 | 358 { |
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359 int nargin = args.length (); |
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360 |
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361 if (nargin < 4 || nargin > 6) |
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362 print_usage (); |
3990 | 363 |
4140 | 364 warned_fcn_imaginary = false; |
365 warned_jac_imaginary = false; | |
366 warned_cf_imaginary = false; | |
367 | |
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368 octave_value_list retval (5); |
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369 |
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370 unwind_protect frame; |
3990 | 371 |
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372 frame.protect_var (call_depth); |
3990 | 373 call_depth++; |
374 | |
375 if (call_depth > 1) | |
376 DASRT_ABORT1 ("invalid recursive call"); | |
377 | |
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378 int argp = 0; |
5729 | 379 std::string fcn_name, fname, jac_name, jname; |
3990 | 380 dasrt_f = 0; |
381 dasrt_j = 0; | |
382 dasrt_cf = 0; | |
383 | |
384 // Check all the arguments. Are they the right animals? | |
385 | |
386 // Here's where I take care of f and j in one shot: | |
387 | |
388 octave_value f_arg = args(0); | |
389 | |
5729 | 390 if (f_arg.is_cell ()) |
3990 | 391 { |
5729 | 392 Cell c = f_arg.cell_value (); |
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393 if (c.numel () == 1) |
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394 f_arg = c(0); |
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395 else if (c.numel () == 2) |
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396 { |
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397 if (c(0).is_function_handle () || c(0).is_inline_function ()) |
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398 dasrt_f = c(0).function_value (); |
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399 else |
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400 { |
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401 fcn_name = unique_symbol_name ("__dasrt_fcn__"); |
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402 fname = "function y = "; |
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403 fname.append (fcn_name); |
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404 fname.append (" (x, xdot, t) y = "); |
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405 dasrt_f = extract_function (c(0), "dasrt", fcn_name, fname, |
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406 "; endfunction"); |
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407 } |
5729 | 408 |
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409 if (dasrt_f) |
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410 { |
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411 if (c(1).is_function_handle () || c(1).is_inline_function ()) |
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412 dasrt_j = c(1).function_value (); |
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413 else |
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414 { |
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415 jac_name = unique_symbol_name ("__dasrt_jac__"); |
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416 jname = "function jac = "; |
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417 jname.append (jac_name); |
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418 jname.append (" (x, xdot, t, cj) jac = "); |
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419 dasrt_j = extract_function (c(1), "dasrt", jac_name, jname, |
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420 "; endfunction"); |
5729 | 421 |
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422 if (! dasrt_j) |
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423 { |
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424 if (fcn_name.length ()) |
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425 clear_function (fcn_name); |
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426 dasrt_f = 0; |
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427 } |
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428 } |
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429 } |
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430 } |
5729 | 431 else |
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432 DASRT_ABORT1 ("incorrect number of elements in cell array"); |
5729 | 433 } |
434 | |
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435 if (! dasrt_f && ! f_arg.is_cell ()) |
5729 | 436 { |
437 if (f_arg.is_function_handle () || f_arg.is_inline_function ()) | |
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438 dasrt_f = f_arg.function_value (); |
5729 | 439 else |
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440 { |
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441 switch (f_arg.rows ()) |
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442 { |
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443 case 1: |
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444 fcn_name = unique_symbol_name ("__dasrt_fcn__"); |
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445 fname = "function y = "; |
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446 fname.append (fcn_name); |
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447 fname.append (" (x, xdot, t) y = "); |
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448 dasrt_f = extract_function (f_arg, "dasrt", fcn_name, fname, |
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449 "; endfunction"); |
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450 break; |
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451 |
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452 case 2: |
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453 { |
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454 string_vector tmp = args(0).all_strings (); |
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455 |
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456 fcn_name = unique_symbol_name ("__dasrt_fcn__"); |
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457 fname = "function y = "; |
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458 fname.append (fcn_name); |
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459 fname.append (" (x, xdot, t) y = "); |
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460 dasrt_f = extract_function (tmp(0), "dasrt", fcn_name, |
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461 fname, "; endfunction"); |
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462 |
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463 if (dasrt_f) |
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464 { |
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465 jac_name = unique_symbol_name ("__dasrt_jac__"); |
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466 jname = "function jac = "; |
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467 jname.append (jac_name); |
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468 jname.append (" (x, xdot, t, cj) jac = "); |
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469 dasrt_j = extract_function (tmp(1), "dasrt", jac_name, |
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470 jname, "; endfunction"); |
5729 | 471 |
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472 if (! dasrt_j) |
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473 dasrt_f = 0; |
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474 } |
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475 } |
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476 break; |
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477 |
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478 default: |
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479 DASRT_ABORT1 |
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480 ("first arg should be a string or 2-element string array"); |
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481 } |
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482 } |
3990 | 483 } |
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484 |
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485 if (! dasrt_f) |
3990 | 486 DASRT_ABORT; |
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487 |
3990 | 488 DAERTFunc func (dasrt_user_f); |
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489 |
3990 | 490 argp++; |
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491 |
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492 if (args(1).is_function_handle () || args(1).is_inline_function ()) |
5729 | 493 { |
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494 dasrt_cf = args(1).function_value (); |
5729 | 495 |
496 if (! dasrt_cf) | |
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497 DASRT_ABORT1 ("invalid constraint function G"); |
5729 | 498 |
499 argp++; | |
500 | |
501 func.set_constraint_function (dasrt_user_cf); | |
502 } | |
503 else if (args(1).is_string ()) | |
3990 | 504 { |
505 dasrt_cf = is_valid_function (args(1), "dasrt", true); | |
506 if (! dasrt_cf) | |
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507 DASRT_ABORT1 ("invalid constraint function G"); |
3990 | 508 |
509 argp++; | |
510 | |
511 func.set_constraint_function (dasrt_user_cf); | |
512 } | |
513 | |
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514 ColumnVector state = args(argp).xvector_value ("dasrt: initial state X_0 must be a vector"); |
3990 | 515 |
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516 ColumnVector stateprime = args(argp).xvector_value ("dasrt: initial derivatives XDOT_0 must be a vector"); |
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517 argp++; |
3990 | 518 |
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519 ColumnVector out_times = args(argp).xvector_value ("dasrt: output time variable T must be a vector"); |
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520 argp++; |
3990 | 521 |
3994 | 522 double tzero = out_times (0); |
3990 | 523 |
524 ColumnVector crit_times; | |
525 | |
526 bool crit_times_set = false; | |
527 | |
528 if (argp < nargin) | |
529 { | |
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530 crit_times = args(argp).xvector_value ("dasrt: list of critical times T_CRIT must be a vector"); |
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531 argp++; |
3990 | 532 |
533 crit_times_set = true; | |
534 } | |
535 | |
536 if (dasrt_j) | |
537 func.set_jacobian_function (dasrt_user_j); | |
538 | |
539 DASRT_result output; | |
540 | |
3992 | 541 DASRT dae = DASRT (state, stateprime, tzero, func); |
3990 | 542 |
4122 | 543 dae.set_options (dasrt_opts); |
3990 | 544 |
545 if (crit_times_set) | |
546 output = dae.integrate (out_times, crit_times); | |
547 else | |
548 output = dae.integrate (out_times); | |
549 | |
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550 if (fcn_name.length ()) |
5729 | 551 clear_function (fcn_name); |
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552 if (jac_name.length ()) |
5729 | 553 clear_function (jac_name); |
554 | |
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555 std::string msg = dae.error_message (); |
3997 | 556 |
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557 if (dae.integration_ok ()) |
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558 { |
20892 | 559 retval(0) = output.state (); |
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560 retval(1) = output.deriv (); |
20892 | 561 retval(2) = output.times (); |
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562 } |
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563 else |
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564 { |
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565 if (nargout < 4) |
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566 error ("dasrt: %s", msg.c_str ()); |
20892 | 567 |
568 retval(0) = Matrix (); | |
569 retval(1) = Matrix (); | |
570 retval(2) = Matrix (); | |
3990 | 571 } |
572 | |
20892 | 573 retval(3) = static_cast<double> (dae.integration_state ()); |
574 retval(4) = msg; | |
575 | |
3990 | 576 return retval; |
577 } |