[ot][spam][crazy] Inhibition Efforts: High-Precision

[Undiscussed Horrific Abuse, One Victim of Many]

here's their example:

#include <gmpxx.h>
// g++ mycxxprog.cc -lgmpxx -lgmp

int
main (void)
{
  mpz_class a, b, c;

  a = 1234;
  b = "-5678";
  c = a+b;
  cout << "sum is " << c << "\n";
  cout << "absolute value is " << abs(c) << "\n";

  return 0;
}