Mercurial > octave
view liboctave/numeric/DASRT.cc @ 31241:5ea5fe592a9a
Don't delete labels when reordering of axes children (bug #63117)
* graphics.in.h (children_property::do_set): Avoid using a temporary variable
for new children list. Rephrase error message to be more accurate.
Always return true for clarity.
author | Pantxo Diribarne <pantxo.diribarne@gmail.com> |
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date | Tue, 27 Sep 2022 23:30:54 +0200 |
parents | 796f54d4ddbf |
children | 597f3ee61a48 |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 2002-2022 The Octave Project Developers // // See the file COPYRIGHT.md in the top-level directory of this // distribution or <https://octave.org/copyright/>. // // This file is part of Octave. // // Octave 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 3 of the License, or // (at your option) any later version. // // Octave 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 Octave; see the file COPYING. If not, see // <https://www.gnu.org/licenses/>. // //////////////////////////////////////////////////////////////////////// #if defined (HAVE_CONFIG_H) # include "config.h" #endif #include <cinttypes> #include <sstream> #include "DASRT.h" #include "f77-fcn.h" #include "lo-error.h" #include "quit.h" typedef F77_INT (*dasrt_fcn_ptr) (const double&, const double *, const double *, double *, F77_INT&, double *, F77_INT *); typedef F77_INT (*dasrt_jac_ptr) (const double&, const double *, const double *, double *, const double&, double *, F77_INT *); typedef F77_INT (*dasrt_constr_ptr) (const F77_INT&, const double&, const double *, const F77_INT&, double *, double *, F77_INT *); extern "C" { F77_RET_T F77_FUNC (ddasrt, DDASRT) (dasrt_fcn_ptr, const F77_INT&, F77_DBLE&, F77_DBLE *, F77_DBLE *, const F77_DBLE&, F77_INT *, const F77_DBLE *, const F77_DBLE *, F77_INT&, F77_DBLE *, const F77_INT&, F77_INT *, const F77_INT&, F77_DBLE *, F77_INT *, dasrt_jac_ptr, dasrt_constr_ptr, const F77_INT&, F77_INT *); } static DAEFunc::DAERHSFunc user_fsub; static DAEFunc::DAEJacFunc user_jsub; static DAERTFunc::DAERTConstrFunc user_csub; static F77_INT nn; static F77_INT ddasrt_f (const double& t, const double *state, const double *deriv, double *delta, F77_INT& ires, double *, F77_INT *) { ColumnVector tmp_state (nn); ColumnVector tmp_deriv (nn); for (F77_INT i = 0; i < nn; i++) { tmp_state(i) = state[i]; tmp_deriv(i) = deriv[i]; } octave_idx_type tmp_ires = ires; ColumnVector tmp_fval = (*user_fsub) (tmp_state, tmp_deriv, t, tmp_ires); ires = octave::to_f77_int (tmp_ires); if (tmp_fval.isempty ()) ires = -2; else { for (F77_INT i = 0; i < nn; i++) delta[i] = tmp_fval(i); } return 0; } F77_INT ddasrt_j (const double& time, const double *state, const double *deriv, double *pd, const double& cj, double *, F77_INT *) { // FIXME: would be nice to avoid copying the data. ColumnVector tmp_state (nn); ColumnVector tmp_deriv (nn); for (F77_INT i = 0; i < nn; i++) { tmp_deriv.elem (i) = deriv[i]; tmp_state.elem (i) = state[i]; } Matrix tmp_pd = (*user_jsub) (tmp_state, tmp_deriv, time, cj); for (F77_INT j = 0; j < nn; j++) for (F77_INT i = 0; i < nn; i++) pd[nn * j + i] = tmp_pd.elem (i, j); return 0; } static F77_INT ddasrt_g (const F77_INT& neq, const double& t, const double *state, const F77_INT& m_ng, double *gout, double *, F77_INT *) { F77_INT n = neq; ColumnVector tmp_state (n); for (F77_INT i = 0; i < n; i++) tmp_state(i) = state[i]; ColumnVector tmp_fval = (*user_csub) (tmp_state, t); for (F77_INT i = 0; i < m_ng; i++) gout[i] = tmp_fval(i); return 0; } void DASRT::integrate (double tout) { // I suppose this is the safe thing to do. If this is the first // call, or if anything about the problem has changed, we should // start completely fresh. if (! m_initialized || m_restart || DAEFunc::m_reset || DAERTFunc::m_reset || DASRT_options::m_reset) { m_integration_error = false; m_initialized = true; m_info.resize (dim_vector (15, 1)); for (F77_INT i = 0; i < 15; i++) m_info(i) = 0; F77_INT n = octave::to_f77_int (size ()); nn = n; // DAERTFunc user_csub = DAERTFunc::constraint_function (); if (user_csub) { ColumnVector tmp = (*user_csub) (m_x, m_t); m_ng = octave::to_f77_int (tmp.numel ()); } else m_ng = 0; F77_INT maxord = octave::to_f77_int (maximum_order ()); if (maxord >= 0) { if (maxord > 0 && maxord < 6) { m_info(8) = 1; m_iwork(2) = maxord; } else { (*current_liboctave_error_handler) ("dassl: invalid value for maximum order"); m_integration_error = true; return; } } m_liw = 21 + n; m_lrw = 50 + 9*n + n*n + 3*m_ng; m_iwork.resize (dim_vector (m_liw, 1)); m_rwork.resize (dim_vector (m_lrw, 1)); m_info(0) = 0; if (m_stop_time_set) { m_info(3) = 1; m_rwork(0) = m_stop_time; } else m_info(3) = 0; m_restart = false; // DAEFunc user_fsub = DAEFunc::function (); user_jsub = DAEFunc::jacobian_function (); if (user_fsub) { octave_idx_type ires = 0; ColumnVector fval = (*user_fsub) (m_x, m_xdot, m_t, ires); if (fval.numel () != m_x.numel ()) { (*current_liboctave_error_handler) ("dasrt: inconsistent sizes for state and residual vectors"); m_integration_error = true; return; } } else { (*current_liboctave_error_handler) ("dasrt: no user supplied RHS subroutine!"); m_integration_error = true; return; } m_info(4) = (user_jsub ? 1 : 0); DAEFunc::m_reset = false; m_jroot.resize (dim_vector (m_ng, 1), 1); DAERTFunc::m_reset = false; // DASRT_options double mss = maximum_step_size (); if (mss >= 0.0) { m_rwork(1) = mss; m_info(6) = 1; } else m_info(6) = 0; double iss = initial_step_size (); if (iss >= 0.0) { m_rwork(2) = iss; m_info(7) = 1; } else m_info(7) = 0; F77_INT sl = octave::to_f77_int (step_limit ()); if (sl >= 0) { m_info(11) = 1; m_iwork(20) = sl; } else m_info(11) = 0; m_abs_tol = absolute_tolerance (); m_rel_tol = relative_tolerance (); F77_INT abs_tol_len = octave::to_f77_int (m_abs_tol.numel ()); F77_INT rel_tol_len = octave::to_f77_int (m_rel_tol.numel ()); if (abs_tol_len == 1 && rel_tol_len == 1) { m_info.elem (1) = 0; } else if (abs_tol_len == n && rel_tol_len == n) { m_info.elem (1) = 1; } else { (*current_liboctave_error_handler) ("dasrt: inconsistent sizes for tolerance arrays"); m_integration_error = true; return; } DASRT_options::m_reset = false; } double *px = m_x.fortran_vec (); double *pxdot = m_xdot.fortran_vec (); F77_INT *pinfo = m_info.fortran_vec (); double *prel_tol = m_rel_tol.fortran_vec (); double *pabs_tol = m_abs_tol.fortran_vec (); double *prwork = m_rwork.fortran_vec (); F77_INT *piwork = m_iwork.fortran_vec (); F77_INT *pjroot = m_jroot.fortran_vec (); double *dummy = nullptr; F77_INT *idummy = nullptr; F77_INT tmp_istate = octave::to_f77_int (m_istate); F77_XFCN (ddasrt, DDASRT, (ddasrt_f, nn, m_t, px, pxdot, tout, pinfo, prel_tol, pabs_tol, tmp_istate, prwork, m_lrw, piwork, m_liw, dummy, idummy, ddasrt_j, ddasrt_g, m_ng, pjroot)); m_istate = tmp_istate; switch (m_istate) { case 1: // A step was successfully taken in intermediate-output // mode. The code has not yet reached TOUT. case 2: // The integration to TOUT was successfully completed // (T=TOUT) by stepping exactly to TOUT. case 3: // The integration to TOUT was successfully completed // (T=TOUT) by stepping past TOUT. Y(*) is obtained by // interpolation. YPRIME(*) is obtained by interpolation. m_t = tout; break; case 4: // The integration was successfully completed // by finding one or more roots of G at T. break; case -1: // A large amount of work has been expended. case -2: // The error tolerances are too stringent. case -3: // The local error test cannot be satisfied because you // specified a zero component in ATOL and the // corresponding computed solution component is zero. // Thus, a pure relative error test is impossible for // this component. case -6: // DDASRT had repeated error test failures on the last // attempted step. case -7: // The corrector could not converge. case -8: // The matrix of partial derivatives is singular. case -9: // The corrector could not converge. There were repeated // error test failures in this step. case -10: // The corrector could not converge because IRES was // equal to minus one. case -11: // IRES equal to -2 was encountered and control is being // returned to the calling program. case -12: // DASSL failed to compute the initial YPRIME. case -33: // The code has encountered trouble from which it cannot // recover. A message is printed explaining the trouble // and control is returned to the calling program. For // example, this occurs when invalid input is detected. m_integration_error = true; break; default: m_integration_error = true; (*current_liboctave_error_handler) ("unrecognized value of istate (= %" OCTAVE_IDX_TYPE_FORMAT ") " "returned from ddasrt", m_istate); break; } } DASRT_result DASRT::integrate (const ColumnVector& tout) { DASRT_result retval; Matrix x_out; Matrix xdot_out; ColumnVector t_out = tout; octave_idx_type n_out = tout.numel (); F77_INT n = octave::to_f77_int (size ()); if (n_out > 0 && n > 0) { x_out.resize (n_out, n); xdot_out.resize (n_out, n); for (F77_INT i = 0; i < n; i++) { x_out(0, i) = m_x(i); xdot_out(0, i) = m_xdot(i); } for (octave_idx_type j = 1; j < n_out; j++) { integrate (tout(j)); if (m_integration_error) { retval = DASRT_result (x_out, xdot_out, t_out); return retval; } if (m_istate == 4) t_out(j) = m_t; else t_out(j) = tout(j); for (F77_INT i = 0; i < n; i++) { x_out(j, i) = m_x(i); xdot_out(j, i) = m_xdot(i); } if (m_istate == 4) { x_out.resize (j+1, n); xdot_out.resize (j+1, n); t_out.resize (j+1); break; } } } retval = DASRT_result (x_out, xdot_out, t_out); return retval; } DASRT_result DASRT::integrate (const ColumnVector& tout, const ColumnVector& tcrit) { DASRT_result retval; Matrix x_out; Matrix xdot_out; ColumnVector t_outs = tout; octave_idx_type n_out = tout.numel (); F77_INT n = octave::to_f77_int (size ()); if (n_out > 0 && n > 0) { x_out.resize (n_out, n); xdot_out.resize (n_out, n); octave_idx_type n_crit = tcrit.numel (); if (n_crit > 0) { octave_idx_type i_crit = 0; octave_idx_type i_out = 1; double next_crit = tcrit(0); double next_out; while (i_out < n_out) { bool do_restart = false; next_out = tout(i_out); if (i_crit < n_crit) next_crit = tcrit(i_crit); bool save_output = false; double t_out; if (next_crit == next_out) { set_stop_time (next_crit); t_out = next_out; save_output = true; i_out++; i_crit++; do_restart = true; } else if (next_crit < next_out) { if (i_crit < n_crit) { set_stop_time (next_crit); t_out = next_crit; save_output = false; i_crit++; do_restart = true; } else { clear_stop_time (); t_out = next_out; save_output = true; i_out++; } } else { set_stop_time (next_crit); t_out = next_out; save_output = true; i_out++; } integrate (t_out); if (m_integration_error) { retval = DASRT_result (x_out, xdot_out, t_outs); return retval; } if (m_istate == 4) t_out = m_t; if (save_output) { for (F77_INT i = 0; i < n; i++) { x_out(i_out-1, i) = m_x(i); xdot_out(i_out-1, i) = m_xdot(i); } t_outs(i_out-1) = t_out; if (m_istate == 4) { x_out.resize (i_out, n); xdot_out.resize (i_out, n); t_outs.resize (i_out); i_out = n_out; } } if (do_restart) force_restart (); } retval = DASRT_result (x_out, xdot_out, t_outs); } else { retval = integrate (tout); if (m_integration_error) return retval; } } return retval; } std::string DASRT::error_message (void) const { std::string retval; std::ostringstream buf; buf << m_t; std::string t_curr = buf.str (); switch (m_istate) { case 1: retval = "a step was successfully taken in intermediate-output mode."; break; case 2: retval = "integration completed by stepping exactly to TOUT"; break; case 3: retval = "integration to tout completed by stepping past TOUT"; break; case 4: retval = "integration completed by finding one or more roots of G at T"; break; case -1: retval = "a large amount of work has been expended (t =" + t_curr + ')'; break; case -2: retval = "the error tolerances are too stringent"; break; case -3: retval = "error weight became zero during problem. (t = " + t_curr + "; solution component i vanished, and atol or atol(i) == 0)"; break; case -6: retval = "repeated error test failures on the last attempted step (t = " + t_curr + ')'; break; case -7: retval = "the corrector could not converge (t = " + t_curr + ')'; break; case -8: retval = "the matrix of partial derivatives is singular (t = " + t_curr + ')'; break; case -9: retval = "the corrector could not converge (t = " + t_curr + "; repeated test failures)"; break; case -10: retval = "corrector could not converge because IRES was -1 (t = " + t_curr + ')'; break; case -11: retval = "return requested in user-supplied function (t = " + t_curr + ')'; break; case -12: retval = "failed to compute consistent initial conditions"; break; case -33: retval = "unrecoverable error (see printed message)"; break; default: retval = "unknown error state"; break; } return retval; }