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BitTraits.h

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#ifndef CLASSLIB_BIT_TRAITS_H
# define CLASSLIB_BIT_TRAITS_H

//<<<<<< INCLUDES                                                       >>>>>>

# include "classlib/sysapi/system.h"
# include <climits>

namespace lat {
//<<<<<< PUBLIC DEFINES                                                 >>>>>>
//<<<<<< PUBLIC CONSTANTS                                               >>>>>>
//<<<<<< PUBLIC TYPES                                                   >>>>>>
//<<<<<< PUBLIC VARIABLES                                               >>>>>>
//<<<<<< PUBLIC FUNCTIONS                                               >>>>>>
//<<<<<< CLASS DECLARATIONS                                             >>>>>>

template <class T>
struct BitTraits
{
    enum { Bits         = sizeof (T) * CHAR_BIT };

    enum { Bytes        = Bits / 8 + ((Bits % 8) > 0) };

    enum { Digits       = (Bits * 30103) / 100000 + 1 };
    // 30103 =~ M_LN2 / M_LN10 * 100000

    enum { HexDigits    = Bits / 4 + ((Bits % 4) > 0) };
};

//<<<<<< INLINE PUBLIC FUNCTIONS                                        >>>>>>
//<<<<<< INLINE MEMBER FUNCTIONS                                        >>>>>>

} // namespace lat
#endif // CLASSLIB_BIT_TRAITS_H

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