1 /* complex/gsl_complex.h
3 * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2007 Gerard Jungman, Brian Gough
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 3 of the License, or (at
8 * your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20 #ifndef __GSL_COMPLEX_H__
21 #define __GSL_COMPLEX_H__
26 # define __BEGIN_DECLS extern "C" {
27 # define __END_DECLS }
29 # define __BEGIN_DECLS /* empty */
30 # define __END_DECLS /* empty */
36 /* two consecutive built-in types as a complex number */
37 typedef double * gsl_complex_packed ;
38 typedef float * gsl_complex_packed_float ;
39 typedef long double * gsl_complex_packed_long_double ;
41 typedef const double * gsl_const_complex_packed ;
42 typedef const float * gsl_const_complex_packed_float ;
43 typedef const long double * gsl_const_complex_packed_long_double ;
46 /* 2N consecutive built-in types as N complex numbers */
47 typedef double * gsl_complex_packed_array ;
48 typedef float * gsl_complex_packed_array_float ;
49 typedef long double * gsl_complex_packed_array_long_double ;
51 typedef const double * gsl_const_complex_packed_array ;
52 typedef const float * gsl_const_complex_packed_array_float ;
53 typedef const long double * gsl_const_complex_packed_array_long_double ;
56 /* Yes... this seems weird. Trust us. The point is just that
57 sometimes you want to make it obvious that something is
58 an output value. The fact that it lacks a 'const' may not
59 be enough of a clue for people in some contexts.
61 typedef double * gsl_complex_packed_ptr ;
62 typedef float * gsl_complex_packed_float_ptr ;
63 typedef long double * gsl_complex_packed_long_double_ptr ;
65 typedef const double * gsl_const_complex_packed_ptr ;
66 typedef const float * gsl_const_complex_packed_float_ptr ;
67 typedef const long double * gsl_const_complex_packed_long_double_ptr ;
74 gsl_complex_long_double;
88 #define GSL_REAL(z) ((z).dat[0])
89 #define GSL_IMAG(z) ((z).dat[1])
90 #define GSL_COMPLEX_P(zp) ((zp)->dat)
91 #define GSL_COMPLEX_P_REAL(zp) ((zp)->dat[0])
92 #define GSL_COMPLEX_P_IMAG(zp) ((zp)->dat[1])
93 #define GSL_COMPLEX_EQ(z1,z2) (((z1).dat[0] == (z2).dat[0]) && ((z1).dat[1] == (z2).dat[1]))
95 #define GSL_SET_COMPLEX(zp,x,y) do {(zp)->dat[0]=(x); (zp)->dat[1]=(y);} while(0)
96 #define GSL_SET_REAL(zp,x) do {(zp)->dat[0]=(x);} while(0)
97 #define GSL_SET_IMAG(zp,y) do {(zp)->dat[1]=(y);} while(0)
99 #define GSL_SET_COMPLEX_PACKED(zp,n,x,y) do {*((zp)+2*(n))=(x); *((zp)+(2*(n)+1))=(y);} while(0)
103 #endif /* __GSL_COMPLEX_H__ */