[GiNaC-list] How can I get a GiNaC::ex's name

[Warren Weckesser]

This works for me:

string s = ex_to<symbol>(E).get_name();

For example,
---------------------------------------
#include <iostream>
#include <ginac/ginac.h>

using namespace std;
using namespace GiNaC;

int main()
    {
    ex e(symbol("abc"));
    string s = ex_to<symbol>(e).get_name();
    cout << s << endl;
    return 0;
    }
---------------------------------------

On Thu, 2007-05-24 at 18:46 +0800, Zhongxing Xu wrote:
> Hello,
> 
> Say I construct an ex by:
> GiNaC::ex E(GiNaC::symbol("abc"));
> 
> How can I get back "abc" from E as a C++ string or char*?
> 
> Now I do this by print the ex to a std::ostringstream, and get the
> string from the ostringstream. 
> 
> Thanks.
> 
> -- Zhongxing Xu
> 
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