3 * Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 3 of the License, or (at
8 * your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
21 const BASE roe = (fabs(*a) > fabs(*b) ? *a : *b);
22 const BASE scale = fabs(*a) + fabs(*b);
26 const BASE aos = *a / scale;
27 const BASE bos = *b / scale;
28 r = scale * sqrt(aos * aos + bos * bos);
29 r = GSL_SIGN(roe) * r;
33 if (fabs(*a) > fabs(*b))
35 if (fabs(*b) >= fabs(*a) && *c != 0.0)