| /* 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__ */ |