/* * Copyright (c) 2003, 2006 Matteo Frigo * Copyright (c) 2003, 2006 Massachusetts Institute of Technology * * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ /* common routines for Cooley-Tukey algorithms */ #include "ifftw.h" #define POW2P(n) (((n) > 0) && (((n) & ((n) - 1)) == 0)) /* TRUE if radix-r is ugly for size n */ int X(ct_uglyp)(INT min_n, INT n, INT r) { return (n <= min_n) || (POW2P(n) && (n / r) <= 4); }

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