1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
/*____________________________________________________________________________
MusicBrainz -- The Internet music metadatabase
Portions Copyright (C) 2000 Relatable
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
$Id: sigcomplex.h,v 1.2 2001/03/05 22:19:02 robert Exp $
____________________________________________________________________________*/
#ifndef INCLUDED_SIGCOMPLEX_H_
#define INCLUDED_SIGCOMPLEX_H
//------------------------------------
// complex.h
// Complex number
// (c) Reliable Software, 1996
//------------------------------------
#include <math.h>
class Complex
{
public:
Complex () {}
Complex (double re): _re(re), _im(0.0) {}
Complex (double re, double im): _re(re), _im(im) {}
double Re () const { return _re; }
double Im () const { return _im; }
void operator += (const Complex& c)
{
_re += c._re;
_im += c._im;
}
void operator -= (const Complex& c)
{
_re -= c._re;
_im -= c._im;
}
void operator *= (const Complex& c)
{
double reT = c._re * _re - c._im * _im;
_im = c._re * _im + c._im * _re;
_re = reT;
}
Complex operator- ()
{
return Complex (-_re, -_im);
}
double Mod () const { return sqrt (_re * _re + _im * _im); }
double Conjugate () const { return (_re * _re + _im * _im); }
private:
double _re;
double _im;
};
#endif
|
