7 static const string srep("\
8 792*z^8*w^4*x^3*y^4*u^7 + 24*z^4*w^4*x^2*y^3*u^4 \
9 + 264*z^8*w^3*x^2*y^7*u^5 + 198*z^4*w^5*x^5*y*u^6 \
10 + 110*z^2*w^3*x^5*y^4*u^6 - 120*z^8*w*x^4*u^6 \
11 - 480*z^5*w*x^4*y^6*u^8 - 720*z^7*x^3*y^3*u^7 \
12 + 165*z^4*w^2*x^4*y*u^5 + 450*z^8*w^6*x^2*y*u^8 \
13 + 40*z^2*w^3*x^3*y^3*u^6 - 288*z^7*w^2*x^3*y^6*u^6 \
14 + 250*z^6*w^4*x^2*y^4*u^8 + 576*z^7*w^7*x^2*y^4*u^8 \
15 - 80*z^6*w^2*x^5*y^3*u^7 - 144*z^8*w^4*x^5*u^7 \
16 + 120*z^4*w*x^2*y^6*u^6 + 320*z^5*w^5*x^2*y^7*u^8 \
17 + 192*z^7*w^6*x*y^7*u^6 - 12*z^4*w^3*x^3*y^5*u^6 \
18 - 36*z^4*w^4*x^4*y^2*u^8 + 72*z^4*w^5*x^3*u^6 \
19 - 20*z^2*w^2*x^4*y^5*u^8 + 660*z^8*w*x^2*y^4*u^6 \
20 + 66*z^4*w^4*x^4*y^4*u^4 + 440*z^6*w^2*x^3*y^7*u^7 \
21 - 30*z^4*w*x^3*y^2*u^7 - 48*z^8*w^3*x^4*y^3*u^5 \
22 + 72*z^6*w^2*x*y^6*u^4 - 864*z^7*w^3*x^4*y^3*u^8 \
23 + 480*z^7*w^4*x*y^4*u^7 + 60*z^4*w^2*x^2*u^5 \
24 + 375*z^8*w^3*x*y*u^7 + 150*z^8*w^5*x*y^4*u^6 \
25 + 180*z^6*x*y^3*u^5 + 216*z^6*w^3*x^2*y^3*u^6");
27 int main(int argc, char** argv)
29 cout << "Checking for more pgcd() bugs (infinite loop) ... " << flush;
31 ex e = the_parser(srep);
32 const symbol x = ex_to<symbol>(the_parser.get_syms()["x"]);
33 ex g = gcd(e, e.diff(x));
34 cout << "not found. " << flush;
35 cout << g << endl << flush;