numberBaseConversion.hpp

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#ifndef _Wolframe_TYPES_NUMBER_BASE_CONVERSION_HPP_INCLUDED
#define _Wolframe_TYPES_NUMBER_BASE_CONVERSION_HPP_INCLUDED
#include "types/integer.hpp"
#include <string>

namespace _Wolframe {
namespace types {

unsigned int convertBinaryToBCD( const unsigned char* uintptr, unsigned int uintsize, unsigned char* digitsbuf, unsigned int digitsbufsize);

void convertBCDtoBinary( const unsigned char* digits, unsigned int nofdigits, unsigned char* buf, unsigned int bufsize);

template <typename UINTTYPE>
unsigned int convertBigEndianUintToBCD( const UINTTYPE& val, unsigned char* digitsbuf, unsigned int digitsbufsize)
{
        return convertBinaryToBCD( (const unsigned char*)&val, sizeof(val), digitsbuf, digitsbufsize);
}

template <typename UINTTYPE>
void convertBCDtoBigEndianUint( const unsigned char* digits, unsigned int nofdigits, UINTTYPE& val)
{
        convertBCDtoBinary( digits, nofdigits, (unsigned char*)&val, sizeof(val));
}

struct Endian
{
        template <typename UINTTYPE>
        static void reorder( UINTTYPE& num)
        {
                unsigned char* ref = (unsigned char*)&num;
                unsigned int ii=0, nn=sizeof(UINTTYPE)/2;
                for (; ii<nn; ++ii)
                {
                        unsigned char tmp = ref[ii];
                        ref[ii] = ref[ sizeof(UINTTYPE)-ii-1];
                        ref[ sizeof(UINTTYPE)-ii-1] = tmp;
                }
        }
};

}}//namespace
#endif