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
|
// { dg-do run }
extern "C" int printf (const char *, ...);
template <class T> T max (const T&x, const T&y)
{
return (x>y)?x:y;
}
class complex
{
double re, im;
public:
complex (double r, double i=0) { re = r; im = i; }
friend int operator > (const complex& x, const complex &y);
void print () { printf ("re = %g; im = %g;\n", re, im); }
};
int operator >(const complex& x, const complex &y)
{
double c1 = x.re * x.re + x.im * x.im;
double c2 = y.re * y.re + y.im * y.im;
return c1 > c2;
}
int main ()
{
complex c1 (1, 0);
complex c2 (2, 0);
complex c3 (2, 3);
complex c4 (2, 1);
complex m1 = max (c1, c2);
complex m2 = max (c3, c4);
m1.print ();
m2.print ();
return 0;
}
|