Mercurial > octave
view liboctave/numeric/Quad.cc @ 27919:1891570abac8
update Octave Project Developers copyright for the new year
In files that have the "Octave Project Developers" copyright notice,
update for 2020.
author | John W. Eaton <jwe@octave.org> |
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date | Mon, 06 Jan 2020 22:29:51 -0500 |
parents | b442ec6dda5c |
children | bd51beb6205e |
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/* Copyright (C) 1993-2020 The Octave Project Developers See the file COPYRIGHT.md in the top-level directory of this distribution or <https://octave.org/COPYRIGHT.html/>. 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 <cassert> #include "Array.h" #include "Quad.h" #include "f77-fcn.h" #include "lo-error.h" #include "quit.h" static integrand_fcn user_fcn; static float_integrand_fcn float_user_fcn; typedef F77_INT (*quad_fcn_ptr) (const double&, int&, double&); typedef F77_INT (*quad_float_fcn_ptr) (const float&, int&, float&); extern "C" { F77_RET_T F77_FUNC (dqagp, DQAGP) (quad_fcn_ptr, const F77_DBLE&, const F77_DBLE&, const F77_INT&, const F77_DBLE*, const F77_DBLE&, const F77_DBLE&, F77_DBLE&, F77_DBLE&, F77_INT&, F77_INT&, const F77_INT&, const F77_INT&, F77_INT&, F77_INT*, F77_DBLE*); F77_RET_T F77_FUNC (dqagi, DQAGI) (quad_fcn_ptr, const F77_DBLE&, const F77_INT&, const F77_DBLE&, const F77_DBLE&, F77_DBLE&, F77_DBLE&, F77_INT&, F77_INT&, const F77_INT&, const F77_INT&, F77_INT&, F77_INT*, F77_DBLE*); F77_RET_T F77_FUNC (qagp, QAGP) (quad_float_fcn_ptr, const F77_REAL&, const F77_REAL&, const F77_INT&, const F77_REAL*, const F77_REAL&, const F77_REAL&, F77_REAL&, F77_REAL&, F77_INT&, F77_INT&, const F77_INT&, const F77_INT&, F77_INT&, F77_INT*, F77_REAL*); F77_RET_T F77_FUNC (qagi, QAGI) (quad_float_fcn_ptr, const F77_REAL&, const F77_INT&, const F77_REAL&, const F77_REAL&, F77_REAL&, F77_REAL&, F77_INT&, F77_INT&, const F77_INT&, const F77_INT&, F77_INT&, F77_INT*, F77_REAL*); } static F77_INT user_function (const double& x, int&, double& result) { result = (*user_fcn) (x); return 0; } static F77_INT float_user_function (const float& x, int&, float& result) { result = (*float_user_fcn) (x); return 0; } double DefQuad::do_integrate (octave_idx_type& ier, octave_idx_type& neval, double& abserr) { F77_INT npts = octave::to_f77_int (singularities.numel () + 2); double *points = singularities.fortran_vec (); double result = 0.0; F77_INT leniw = 183*npts - 122; Array<F77_INT> iwork (dim_vector (leniw, 1)); F77_INT *piwork = iwork.fortran_vec (); F77_INT lenw = 2*leniw - npts; Array<double> work (dim_vector (lenw, 1)); double *pwork = work.fortran_vec (); user_fcn = f; F77_INT last; double abs_tol = absolute_tolerance (); double rel_tol = relative_tolerance (); // NEVAL and IER are output only parameters and F77_INT can not be a // wider type than octave_idx_type so we can create local variables // here that are the correct type for the Fortran subroutine and then // copy them to the function parameters without needing to preserve // and pass the values to the Fortran subroutine. F77_INT xneval, xier; F77_XFCN (dqagp, DQAGP, (user_function, lower_limit, upper_limit, npts, points, abs_tol, rel_tol, result, abserr, xneval, xier, leniw, lenw, last, piwork, pwork)); neval = xneval; ier = xier; return result; } float DefQuad::do_integrate (octave_idx_type&, octave_idx_type&, float&) { (*current_liboctave_error_handler) ("incorrect integration function called"); } double IndefQuad::do_integrate (octave_idx_type& ier, octave_idx_type& neval, double& abserr) { double result = 0.0; F77_INT leniw = 128; Array<F77_INT> iwork (dim_vector (leniw, 1)); F77_INT *piwork = iwork.fortran_vec (); F77_INT lenw = 8*leniw; Array<double> work (dim_vector (lenw, 1)); double *pwork = work.fortran_vec (); user_fcn = f; F77_INT last; F77_INT inf; switch (type) { case bound_to_inf: inf = 1; break; case neg_inf_to_bound: inf = -1; break; case doubly_infinite: inf = 2; break; default: assert (0); break; } double abs_tol = absolute_tolerance (); double rel_tol = relative_tolerance (); // NEVAL and IER are output only parameters and F77_INT can not be a // wider type than octave_idx_type so we can create local variables // here that are the correct type for the Fortran subroutine and then // copy them to the function parameters without needing to preserve // and pass the values to the Fortran subroutine. F77_INT xneval, xier; F77_XFCN (dqagi, DQAGI, (user_function, bound, inf, abs_tol, rel_tol, result, abserr, xneval, xier, leniw, lenw, last, piwork, pwork)); neval = xneval; ier = xier; return result; } float IndefQuad::do_integrate (octave_idx_type&, octave_idx_type&, float&) { (*current_liboctave_error_handler) ("incorrect integration function called"); } double FloatDefQuad::do_integrate (octave_idx_type&, octave_idx_type&, double&) { (*current_liboctave_error_handler) ("incorrect integration function called"); } float FloatDefQuad::do_integrate (octave_idx_type& ier, octave_idx_type& neval, float& abserr) { F77_INT npts = octave::to_f77_int (singularities.numel () + 2); float *points = singularities.fortran_vec (); float result = 0.0; F77_INT leniw = 183*npts - 122; Array<F77_INT> iwork (dim_vector (leniw, 1)); F77_INT *piwork = iwork.fortran_vec (); F77_INT lenw = 2*leniw - npts; Array<float> work (dim_vector (lenw, 1)); float *pwork = work.fortran_vec (); float_user_fcn = ff; F77_INT last; float abs_tol = single_precision_absolute_tolerance (); float rel_tol = single_precision_relative_tolerance (); // NEVAL and IER are output only parameters and F77_INT can not be a // wider type than octave_idx_type so we can create local variables // here that are the correct type for the Fortran subroutine and then // copy them to the function parameters without needing to preserve // and pass the values to the Fortran subroutine. F77_INT xneval, xier; F77_XFCN (qagp, QAGP, (float_user_function, lower_limit, upper_limit, npts, points, abs_tol, rel_tol, result, abserr, xneval, xier, leniw, lenw, last, piwork, pwork)); neval = xneval; ier = xier; return result; } double FloatIndefQuad::do_integrate (octave_idx_type&, octave_idx_type&, double&) { (*current_liboctave_error_handler) ("incorrect integration function called"); } float FloatIndefQuad::do_integrate (octave_idx_type& ier, octave_idx_type& neval, float& abserr) { float result = 0.0; F77_INT leniw = 128; Array<F77_INT> iwork (dim_vector (leniw, 1)); F77_INT *piwork = iwork.fortran_vec (); F77_INT lenw = 8*leniw; Array<float> work (dim_vector (lenw, 1)); float *pwork = work.fortran_vec (); float_user_fcn = ff; F77_INT last; F77_INT inf; switch (type) { case bound_to_inf: inf = 1; break; case neg_inf_to_bound: inf = -1; break; case doubly_infinite: inf = 2; break; default: assert (0); break; } float abs_tol = single_precision_absolute_tolerance (); float rel_tol = single_precision_relative_tolerance (); // NEVAL and IER are output only parameters and F77_INT can not be a // wider type than octave_idx_type so we can create local variables // here that are the correct type for the Fortran subroutine and then // copy them to the function parameters without needing to preserve // and pass the values to the Fortran subroutine. F77_INT xneval, xier; F77_XFCN (qagi, QAGI, (float_user_function, bound, inf, abs_tol, rel_tol, result, abserr, xneval, xier, leniw, lenw, last, piwork, pwork)); neval = xneval; ier = xier; return result; }