#include "common.h"
-namespace IPDF
-{
-#define REAL_SINGLE
-//#define REAL_DOUBLE
-//#define REAL_HALF
+#define REAL_SINGLE 0
+#define REAL_DOUBLE 1
+#define REAL_LONG_DOUBLE 2
+#define REAL_VFPU 3
+#define REAL_RATIONAL 4
+#define REAL_RATIONAL_ARBINT 5
+
+#ifndef REAL
+ #error "REAL was not defined!"
+#endif
+
+#if REAL == REAL_VFPU
+ #include "vfpu.h"
+#endif
+
+#if REAL == REAL_RATIONAL
+ #include "rational.h"
+#endif //REAL
+
+#if REAL == REAL_RATIONAL_ARBINT
+ #include "rational.h"
+ #include "arbint.h"
+ #include "gmpint.h"
+#endif //REAL
+
+namespace IPDF
+{
+ extern const char * g_real_name[];
-#ifdef REAL_SINGLE
+#if REAL == REAL_SINGLE
typedef float Real;
- inline float Float(Real r) {return r;}
-#elif defined REAL_DOUBLE
+#elif REAL == REAL_DOUBLE
typedef double Real;
- inline double Float(Real r) {return r;}
-#elif defined REAL_HALF
- struct Real
+#elif REAL == REAL_LONG_DOUBLE
+ typedef long double Real;
+#elif REAL == REAL_VFPU
+ typedef VFPU::Float Real;
+ inline float Float(const Real & r) {return r.m_value;}
+ inline double Double(const Real & r) {return r.m_value;}
+#elif REAL == REAL_RATIONAL
+ typedef Rational<int64_t> Real;
+ inline float Float(const Real & r) {return (float)r.ToDouble();}
+ inline double Double(const Real & r) {return r.ToDouble();}
+#elif REAL == REAL_RATIONAL_ARBINT
+ #define ARBINT Gmpint // Set to Gmpint or Arbint here
+
+ typedef Rational<ARBINT> Real;
+ inline float Float(const Real & r) {return (float)r.ToDouble();}
+ inline double Double(const Real & r) {return r.ToDouble();}
+
+#else
+ #error "Type of Real unspecified."
+#endif //REAL
+
+ // Allow us to call Float on the primative types
+ // Useful so I can template some things that could be either (a more complicated) Real or a primitive type
+ // Mostly in the testers.
+ inline float Float(float f) {return (float)f;}
+ inline float Float(double f) {return (float)f;}
+ inline float Float(long double f) {return (float)(f);}
+ inline double Double(float f) {return (double)f;}
+ inline double Double(double f) {return (double)f;}
+ inline double Double(long double f) {return (double)(f);}
+
+ inline Real Power(const Real & a, int n)
{
- Real() = default;
- Real(double r) : value(r)
+ if (n < 0)
{
- int & a = *((int*)(&value)); // um...
- // mask out extra bits in exponent
- //1000 1111 1000 0000 0000 0011 1111 1111
- // Endianness matters
- a &= 0xFFC001F1; //0x8F8003FF;
-
- }
+ return Power(Real(1)/a, -n);
+ }
+ Real r(1);
+ for (int i = 0; i < n; ++i)
+ r *= a;
+ return r;
+ }
- Real operator+(float f) const {return Real(value+f);}
- Real operator-(float f) const {return Real(value+f);}
- Real operator/(float f) const {return Real(value/f);}
- Real operator*(float f) const {return Real(value*f);}
- Real operator+(const Real & r) const {return Real(this->value + r.value);}
- Real operator-(const Real & r) const {return Real(this->value - r.value);}
- Real operator*(const Real & r) const {return Real(this->value * r.value);}
- Real operator/(const Real & r) const {return Real(this->value / r.value);}
- Real & operator+=(const Real & r) {this->value += r.value; return *this;}
- Real & operator-=(const Real & r) {this->value -= r.value; return *this;}
- Real & operator/=(const Real & r) {this->value /= r.value; return *this;}
- Real & operator*=(const Real & r) {this->value *= r.value; return *this;}
-
- float value;
- };
- inline float Float(Real r) {return r.value;}
-
- inline std::ostream & operator<<(std::ostream & os, Real & r) {return os << r.value;} // yuk
-
-#endif //REAL_HALF
-
}
#endif //_REAL_H