CompressedFloatingPointNumbers.h

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// This file is part of the Peano project. For conditions of distribution and
// use, please see the copyright notice at www.peano-framework.org
#pragma once
 
 
namespace toolbox {
  namespace multiprecision {
    template <class T>
    void decompose(
      const double& value,
      char&         exponent,
      T&            mantissa
    );
 
    void decomposeIntoEightVariants(
      double        value,
      char          exponent[8],
      long int      mantissa[8],
      double        error[8]
    );
 
    void decomposeIntoFourVariants(
      double        value,
      char          exponent[4],
      int           mantissa[4],
      double        error[4]
    );
 
    int findMostAgressiveCompression(
      double        value,
      double        maxAbsoluteError
    );
 
 
    int findMostAgressiveCompression(
      const double  values[],
      int           count,
      double        maxError
    );
 
 
    void decompose(
      double        value,
      char&         exponent,
      long int&     mantissa,
      int           bytesUsedForMantissa
    );
 
    template <class T>
    double compose(
      const char&  exponent,
      const T&     mantissa
    );
 
    double compose(
      char         exponent,
      long int     mantissa,
      int          bytesUsedForMantissa
    );
  }
}
 
 
#include "CompressedFloatingPointNumbers.cpph"