/* integration/qpsrt2.c * * Copyright (C) 1996, 1997, 1998, 1999, 2000 Brian Gough * * 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 of the License, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ /* The smallest interval has the largest error. Before bisecting decrease the sum of the errors over the larger intervals (error_over_large_intervals) and perform extrapolation. */ static int increase_nrmax (gsl_integration_workspace * workspace); static int increase_nrmax (gsl_integration_workspace * workspace) { int k; int id = workspace->nrmax; int jupbnd; const size_t * level = workspace->level; const size_t * order = workspace->order; size_t limit = workspace->limit ; size_t last = workspace->size - 1 ; if (last > (1 + limit / 2)) { jupbnd = limit + 1 - last; } else { jupbnd = last; } for (k = id; k <= jupbnd; k++) { size_t i_max = order[workspace->nrmax]; workspace->i = i_max ; if (level[i_max] < workspace->maximum_level) { return 1; } workspace->nrmax++; } return 0; } static int large_interval (gsl_integration_workspace * workspace) { size_t i = workspace->i ; const size_t * level = workspace->level; if (level[i] < workspace->maximum_level) { return 1 ; } else { return 0 ; } }

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