lookup.h

This a framework to test new ideas in transmission technology. Actual development is a LDPC-coder in

#ifndef LOOKUP_H__
#define LOOKUP_H__
//include<math.h>
// Put this to 0 to use the original functions
#define OPTIMIZE 0
//#include<spc.h>
// If OPTIMIZE is defined, the lookup-functions are used, else the original
// functions are used.
#if OPTIMIZE

// Lookup-table functions for log and exp.
double lookup_exp( double x );
double lookup_log( double x );
void lookup_init();
void lookup_exit();

#else

#include <math.h>

#define lookup_exp exp
#define lookup_log log
#define lookup_init() {}
#define lookup_exit() {}

#endif

#endif