/* * 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 * */ #include "api.h" /* decompose complex pointer into real and imaginary parts. Flip real and imaginary if there the sign does not match FFTW's idea of what the sign should be */ void X(extract_reim)(int sign, C *c, R **r, R **i) { if (sign == FFT_SIGN) { *r = c[0] + 0; *i = c[0] + 1; } else { *r = c[0] + 1; *i = c[0] + 0; } }

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