Change float representations to be more IEEE-ish

[ipdf/code.git] / src / real.h

diff --git a/src/real.h b/src/real.h
index 73aca6d..00eff9c 100644 (file)
--- a/src/real.h
+++ b/src/real.h
@@ -3,20 +3,43 @@
 
 #include "common.h"
 
-namespace IPDF
-{
+#define REAL_SINGLE 0
+#define REAL_DOUBLE 1
+#define REAL_LONG_DOUBLE 2
+#define REAL_SINGLE_FAST2SUM 3
+
+#ifndef REAL
+       #error "REAL was not defined!"
+#endif
 
-#define REAL_SINGLE
-//#define REAL_DOUBLE
-//#define REAL_HALF
+#if REAL >= REAL_SINGLE_FAST2SUM
+       #include "real_fast2sum.h"
+#endif //REAL
 
-#ifdef REAL_SINGLE
+namespace IPDF
+{      
+       extern const char * g_real_name[];
+
+#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;}
-#endif
+#elif REAL == REAL_LONG_DOUBLE
+       typedef long double Real;
+#elif REAL == REAL_SINGLE_FAST2SUM
+       typedef RealF2S<float> Real;
+       inline float Float(Real r) {return r.m_value;}
+               
+#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 f;}
+       inline double Float(double f) {return f;}
+       inline double Float(long double f) {return double(f);}
 }
 
 #endif //_REAL_H