ExpIntegrals.h

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#ifndef EXPINTEGRALS_H
#define EXPINTEGRALS_H


// ----------------------------------------------------------------------
//
// Bridge object between C++ code and the GSL exponential integral functions
//
// ----------------------------------------------------------------------

#ifndef ZMENVIRONMENT_H
  #include "ZMutility/ZMenvironment.h"
#endif
#include <utility>

ZM_BEGIN_NAMESPACE( zmsf )      /*  namespace zmsf  {  */

typedef std::pair<double,double> Dpair;


struct ExpIntegrals {

  static double E1( const double x );

  static Dpair E1Err( const double x ); 

  static double E2( const double x );

  static Dpair E2Err( const double x ); 

  static double Ei( const double x );

  static Dpair EiErr( const double x ); 

  static double Shi( const double x );

  static Dpair ShiErr( const double x ); 

  static double Chi( const double x );

  static Dpair ChiErr( const double x ); 

  static double Ei3( const double x );

  static Dpair Ei3Err( const double x ); 

  static double Si( const double x );

  static Dpair SiErr( const double x ); 

  static double Ci( const double x );

  static Dpair CiErr( const double x ); 

  static double AtanInt( const double x );

  static Dpair AtanIntErr( const double x ); 

  static double Li( const double x );

  static Dpair LiErr( const double x ); 

};  // ExpIntegrals

ZM_END_NAMESPACE( zmsf )        /*  }  // namespace zmsf  */

#endif  /* EXPINTEGRALS_H */

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