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#include <iostream>
#include <string>
#include "ginac.h"
using namespace GiNaC;
using namespace std;
static const string srep("\
792*z^8*w^4*x^3*y^4*u^7 + 24*z^4*w^4*x^2*y^3*u^4 \
+ 264*z^8*w^3*x^2*y^7*u^5 + 198*z^4*w^5*x^5*y*u^6 \
+ 110*z^2*w^3*x^5*y^4*u^6 - 120*z^8*w*x^4*u^6 \
- 480*z^5*w*x^4*y^6*u^8 - 720*z^7*x^3*y^3*u^7 \
+ 165*z^4*w^2*x^4*y*u^5 + 450*z^8*w^6*x^2*y*u^8 \
+ 40*z^2*w^3*x^3*y^3*u^6 - 288*z^7*w^2*x^3*y^6*u^6 \
+ 250*z^6*w^4*x^2*y^4*u^8 + 576*z^7*w^7*x^2*y^4*u^8 \
- 80*z^6*w^2*x^5*y^3*u^7 - 144*z^8*w^4*x^5*u^7 \
+ 120*z^4*w*x^2*y^6*u^6 + 320*z^5*w^5*x^2*y^7*u^8 \
+ 192*z^7*w^6*x*y^7*u^6 - 12*z^4*w^3*x^3*y^5*u^6 \
- 36*z^4*w^4*x^4*y^2*u^8 + 72*z^4*w^5*x^3*u^6 \
- 20*z^2*w^2*x^4*y^5*u^8 + 660*z^8*w*x^2*y^4*u^6 \
+ 66*z^4*w^4*x^4*y^4*u^4 + 440*z^6*w^2*x^3*y^7*u^7 \
- 30*z^4*w*x^3*y^2*u^7 - 48*z^8*w^3*x^4*y^3*u^5 \
+ 72*z^6*w^2*x*y^6*u^4 - 864*z^7*w^3*x^4*y^3*u^8 \
+ 480*z^7*w^4*x*y^4*u^7 + 60*z^4*w^2*x^2*u^5 \
+ 375*z^8*w^3*x*y*u^7 + 150*z^8*w^5*x*y^4*u^6 \
+ 180*z^6*x*y^3*u^5 + 216*z^6*w^3*x^2*y^3*u^6");
int main(int argc, char** argv)
{
cout << "Checking for more pgcd() bugs (infinite loop, miscalculation) ... " << flush;
parser the_parser;
ex e = the_parser(srep);
const symbol x = ex_to<symbol>(the_parser.get_syms()["x"]);
ex g = gcd(e, e.diff(x));
ex should_be = the_parser(string("u^4*z^2"));
if (!(g-should_be).expand().is_zero()) {
cout << "GCD was miscomputed. " << flush;
return 1;
}
cout << "not found. " << flush;
return 0;
}
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