bluestein.h

/*
Copyright (c) 2005-2011, Max-Planck-Society
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of the Max-Planck-Society nor the
      names of its contributors may be used to endorse or promote products
      derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE MAX-PLANCK-SOCIETY BE LIABLE FOR ANY
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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*/

/*
 *  libfftpack is being developed at the Max-Planck-Institut fuer Astrophysik
 *  and financially supported by the Deutsches Zentrum fuer Luft- und Raumfahrt
 *  (DLR).
 */

/*
 *  \author Martin Reinecke
 */

#ifndef PLANCK_BLUESTEIN_H
#define PLANCK_BLUESTEIN_H

#include "c_utils.h"

#ifdef __cplusplus
extern "C" {
#endif

size_t prime_factor_sum (size_t n);

void bluestein_i (size_t n, double **tstorage, size_t *worksize);
void bluestein (size_t n, double *data, double *tstorage, int isign);

#ifdef __cplusplus
}
#endif

#endif