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/* complex/gsl_complex.h
*
* Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman, Brian Gough
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __GSL_COMPLEX_H__
#define __GSL_COMPLEX_H__
#undef __BEGIN_DECLS
#undef __END_DECLS
#ifdef __cplusplus
# define __BEGIN_DECLS extern "C" {
# define __END_DECLS }
#else
# define __BEGIN_DECLS /* empty */
# define __END_DECLS /* empty */
#endif
__BEGIN_DECLS
/* two consecutive built-in types as a complex number */
typedef double * gsl_complex_packed ;
typedef float * gsl_complex_packed_float ;
typedef long double * gsl_complex_packed_long_double ;
typedef const double * gsl_const_complex_packed ;
typedef const float * gsl_const_complex_packed_float ;
typedef const long double * gsl_const_complex_packed_long_double ;
/* 2N consecutive built-in types as N complex numbers */
typedef double * gsl_complex_packed_array ;
typedef float * gsl_complex_packed_array_float ;
typedef long double * gsl_complex_packed_array_long_double ;
typedef const double * gsl_const_complex_packed_array ;
typedef const float * gsl_const_complex_packed_array_float ;
typedef const long double * gsl_const_complex_packed_array_long_double ;
/* Yes... this seems weird. Trust us. The point is just that
sometimes you want to make it obvious that something is
an output value. The fact that it lacks a 'const' may not
be enough of a clue for people in some contexts.
*/
typedef double * gsl_complex_packed_ptr ;
typedef float * gsl_complex_packed_float_ptr ;
typedef long double * gsl_complex_packed_long_double_ptr ;
typedef const double * gsl_const_complex_packed_ptr ;
typedef const float * gsl_const_complex_packed_float_ptr ;
typedef const long double * gsl_const_complex_packed_long_double_ptr ;
typedef struct
{
long double dat[2];
}
gsl_complex_long_double;
typedef struct
{
double dat[2];
}
gsl_complex;
typedef struct
{
float dat[2];
}
gsl_complex_float;
#define GSL_REAL(z) ((z).dat[0])
#define GSL_IMAG(z) ((z).dat[1])
#define GSL_COMPLEX_P(zp) ((zp)->dat)
#define GSL_COMPLEX_P_REAL(zp) ((zp)->dat[0])
#define GSL_COMPLEX_P_IMAG(zp) ((zp)->dat[1])
#define GSL_COMPLEX_EQ(z1,z2) (((z1).dat[0] == (z2).dat[0]) && ((z1).dat[1] == (z2).dat[1]))
#define GSL_SET_COMPLEX(zp,x,y) do {(zp)->dat[0]=(x); (zp)->dat[1]=(y);} while(0)
#define GSL_SET_REAL(zp,x) do {(zp)->dat[0]=(x);} while(0)
#define GSL_SET_IMAG(zp,y) do {(zp)->dat[1]=(y);} while(0)
#define GSL_SET_COMPLEX_PACKED(zp,n,x,y) do {*((zp)+2*(n))=(x); *((zp)+(2*(n)+1))=(y);} while(0)
__END_DECLS
#endif /* __GSL_COMPLEX_H__ */
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