double CArg(CValue a_c)
{
double pi_2 = 1.570796326795;
double b = 180/(2*pi_2);
double x = a_c.real();
double y = a_c.imag();
double a;
double s_x = (x != 0.0) ? x/fabs(x) : 1.0;
double s_y = (y != 0.0) ? y/fabs(y) : 1.0;
if(x != 0.0)
{ a = atan(fabs(y)/fabs(x));
if(s_x < 0 && s_y > 0)
a = 2*pi_2 - a;
if(s_x < 0 && s_y < 0)
a = a - 2*pi_2;
if(s_x > 0 && s_y < 0)
a = -a;
return(a*b);
}
else
{ if(y == 0)
return(0.);
if(s_y > 0)
a = pi_2;
else
a = -pi_2;
return(a*b);
}
}
double CMod(CValue a)
{
double x = a.real();
double y = a.imag();
return(sqrt(x*x + y*y));
}