65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
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/*
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* This file is part of libfftpack.
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*
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* libfftpack 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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* libfftpack 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 libfftpack; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* libfftpack is being developed at the Max-Planck-Institut fuer Astrophysik
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* and financially supported by the Deutsches Zentrum fuer Luft- und Raumfahrt
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* (DLR).
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*/
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/*
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fftpack.h : function declarations for fftpack.c
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Algorithmically based on Fortran-77 FFTPACK by Paul N. Swarztrauber
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(Version 4, 1985).
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Pekka Janhunen 23.2.1995
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(reformatted by joerg arndt)
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reformatted and slightly enhanced by Martin Reinecke (2004)
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*/
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#ifndef PLANCK_FFTPACK_H
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#define PLANCK_FFTPACK_H
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#include "c_utils.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*! forward complex transform */
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void cfftf(size_t N, double complex_data[], double wrk[]);
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/*! backward complex transform */
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void cfftb(size_t N, double complex_data[], double wrk[]);
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/*! initializer for complex transforms */
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void cffti(size_t N, double wrk[]);
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/*! forward real transform */
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void rfftf(size_t N, double data[], double wrk[]);
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/*! backward real transform */
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void rfftb(size_t N, double data[], double wrk[]);
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/*! initializer for real transforms */
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void rffti(size_t N, double wrk[]);
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#ifdef __cplusplus
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}
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#endif
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#endif
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