#include <cmath>
#include <cassert>
#include "arbint.h"
+#include "gmpint.h"
+#include <climits>
+#include <values.h>
namespace IPDF
{
{
return abs(a);
}
-
template <> Arbint Tabs(const Arbint & a);
-
+template <> Gmpint Tabs(const Gmpint & a);
/* Recursive version of GCD
template <class T>
P = Q = T(1);
return;
}
-
T g = gcd(Tabs(P), Tabs(Q));
//Debug("Got gcd!");
P /= g;
Rational operator-(const Rational & r) const
{
Rational result = (r.P == T(0)) ? Rational(P,Q) : Rational(P*r.Q - r.P*Q, Q*r.Q);
- result.CheckAccuracy(ToDouble() - r.ToDouble(),"-");
+ //result.CheckAccuracy(ToDouble() - r.ToDouble(),"-");
return result;
}
Rational operator*(const Rational & r) const
//Rational operator*(const Rational & r) const {return Rational(ToDouble()*r.ToDouble());}
//Rational operator/(const Rational & r) const {return Rational(ToDouble()/r.ToDouble());}
+ Rational operator-() const {Rational r(*this); r.P = -r.P; return r;}
Rational & operator=(const Rational & r) {P = r.P; Q = r.Q; Simplify(); return *this;}
Rational & operator+=(const Rational & r) {this->operator=(*this+r); return *this;}
Rational & operator-=(const Rational & r) {this->operator=(*this-r); return *this;}
Rational & operator*=(const Rational & r) {this->operator=(*this*r); return *this;}
Rational & operator/=(const Rational & r) {this->operator=(*this/r); return *this;}
- double ToDouble() const {return (double)(P) / (double)(Q);}
+ double ToDouble() const
+ {
+ T num = P, denom = Q;
+ while (Tabs(num) > T(DBL_MAX))
+ {
+ num /= T(16);
+ denom /= T(16);
+ }
+ return ((double)(num))/((double)(denom));
+ }
bool CheckAccuracy(double d, const char * msg, double threshold = 1e-3) const
{
double result = fabs(ToDouble() - d);
T Q;
};
-inline Rational<int64_t> pow(const Rational<int64_t> & a, const Rational<int64_t> & b)
-{
- //TODO:Implement properly
- int64_t P = std::pow((double)a.P, b.ToDouble());
- int64_t Q = std::pow((double)a.Q, b.ToDouble());
- return Rational<int64_t>(P, Q);
-}