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/* Copyright (C) 2017 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
*/
#ifndef HARMINV_INT_H
#define HARMINV_INT_H 1
#include "config.h"
#ifndef __cplusplus
/* Require C99 complex number support; this is just too painful
without it. Alternatively, use the complex<double> STL class in
C++. */
# include <complex.h>
#endif
#include "harminv.h"
typedef harminv_complex cmplx; /* shortcut */
/* define extended precision (long double) cmplxl type */
#if defined(HAVE_LONG_DOUBLE) && !defined(__cplusplus)
# if defined(__cplusplus)
# include <complex>
typedef std::complex<long double> cmplxl; /* problematic w/some C++ comp's */
# elif defined(_Complex_I) && defined(complex) && defined(I)
/* C99 <complex.h> header was included before harminv.h */
typedef long double _Complex cmplxl;
# endif
#else
typedef cmplx cmplxl;
#endif
#ifdef __cplusplus
# define I cmplx(0,1)
# define creal(c) real(c)
# define cimag(c) imag(c)
# define cabs(c) abs(c)
# define carg(c) arg(c)
# define cexp(c) exp(c)
# define csqrt(c) sqrt(c)
# define clog(c) log(c)
#else
# ifndef HAVE_CARG /* Cray doesn't have this for some reason */
# define carg(c) atan2(cimag(c), creal(c))
# endif
#endif
struct harminv_data_struct {
const cmplx *c;
int n, K, J, nfreqs;
double fmin, fmax;
cmplx *z;
cmplx *U0, *U1;
cmplxl *G0, *G0_M, *D0; /* cached G, G_M, and D arrays for U0 */
cmplx *B, *u; /* eigen-solutions of U1*B = u*U0*B */
cmplx *amps; /* mode amplitudes */
double *errs; /* relative "error" estimates */
};
#endif /* HARMINV_INT_H */