[GiNaC-list] assignment

[Alexei Sheplyakov]

Hello,

On Tue, Mar 29, 2011 at 12:23:46PM +0200, Nisoli Isaia wrote:
> even with your suggested correction, it gives exactly the same error.
> I think the problem lies in some way in my assignment operator, when I use
> the overloaded operator= of numeric.

I don't think there's anything wrong about the assignment operator.
As a matter of fact the following program works for me just fine:


#include <ginac/ginac.h>
#include <iostream>
using namespace std;
using namespace GiNaC;

class rinterval
{
public:
	numeric min;
	numeric max;
	numeric error;

	rinterval(const numeric&, const numeric&, const numeric&);
	//Friend
	friend const rinterval dynamic(const rinterval&);
	friend std::ostream &operator<< (std::ostream& os, const rinterval& inter)
	{
		return os << "[" << inter.min << "," << inter.max <<"], error = " << inter.error << endl;
	}
	rinterval& operator=(const rinterval& rhs);        
};

rinterval::rinterval(const numeric& input1, const numeric& input2, const numeric& miserr)
{
	if (input1 > input2) {
		min = input2;
		max = input1;
	} else {
		min = input1;
		max = input2;
	}
	error = miserr;
}

const rinterval dynamic(const rinterval& domain)
{
	numeric a = "1.47777777777777777777777777779999";
	rinterval temp(a*domain.min, a*domain.max, domain.error);
	cout << temp;
	return temp;
}

rinterval& rinterval::operator=(const rinterval &rhs)
{
	if (this == &rhs)
		return *this;

	this->min = rhs.min;
	this->max = rhs.max;
	error = rhs.error;
	return *this;
}

int main (void)
{
	numeric a(1, 10);
	numeric b(2, 10);
	rinterval inter(a, b, numeric(0.00001));
	inter = dynamic(inter);    
	cout << inter << endl;
}


The output is

[0.14777777777777777779,0.29555555555555555557], error = 1.0000000000000000818E-5
[0.14777777777777777779,0.29555555555555555557], error = 1.0000000000000000818E-5


I use latest GiNaC and CLN from git.

Compiler:

g++ --version

g++ (Debian 4.4.5-8) 4.4.5
Copyright (C) 2010 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

OS:

uname -rms

Linux 2.6.38.2-ck1 x86_64


Best regards,
	Alexei