37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
/*
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* Copyright (c) 2003, 2007-14 Matteo Frigo
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* Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include "kernel/ifftw.h"
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/* decompose complex pointer into real and imaginary parts.
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Flip real and imaginary if there the sign does not match
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FFTW's idea of what the sign should be */
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void X(extract_reim)(int sign, R *c, R **r, R **i)
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{
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if (sign == FFT_SIGN) {
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*r = c + 0;
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*i = c + 1;
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} else {
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*r = c + 1;
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*i = c + 0;
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}
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}
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