hi,
i am having trouble turning a string with function "pow" into an
expression. an example of the code is given below along with the
output. i cannot figure out what i am doing wrong.
thanks for your help in advance.
--------
#include <iostream>
#include <string>
#include <ginac/ginac.h>
#include <ginac/power.h>
using namespace std;
using namespace GiNaC;
int main()
{
lst all;
all.append(symbol("x"));
// no pow
string str2 = "x*x";
ex e2(str2, all);
cout << "nopow : " << e2 << endl;
// with pow
string str = "pow(x, 2)";
ex e(str, all);
cout << "withpow: " << e << endl;
return 0;
}
the output is:
nopow : x^2
terminate called after throwing an instance of 'std::runtime_error'
what(): no function 'pow' with 2 parameters defined
Aborted
--------------------
--
saurav