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ExpIntegrals.h

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00001 #ifndef EXPINTEGRALS_H
00002 #define EXPINTEGRALS_H
00003 
00004 
00005 // ----------------------------------------------------------------------
00006 //
00007 // Bridge object between C++ code and the GSL exponential integral functions
00008 //
00009 // ----------------------------------------------------------------------
00010 
00011 #ifndef ZMENVIRONMENT_H
00012   #include "ZMutility/ZMenvironment.h"
00013 #endif
00014 #include <utility>
00015 
00016 ZM_BEGIN_NAMESPACE( zmsf )      /*  namespace zmsf  {  */
00017 
00018 typedef std::pair<double,double> Dpair;
00019 
00024 
00025 struct ExpIntegrals {
00026 
00028   static double E1( const double x );
00029 
00031   static Dpair E1Err( const double x ); 
00032 
00034   static double E2( const double x );
00035 
00037   static Dpair E2Err( const double x ); 
00038 
00040   static double Ei( const double x );
00041 
00043   static Dpair EiErr( const double x ); 
00044 
00046   static double Shi( const double x );
00047 
00049   static Dpair ShiErr( const double x ); 
00050 
00052   static double Chi( const double x );
00053 
00055   static Dpair ChiErr( const double x ); 
00056 
00058   static double Ei3( const double x );
00059 
00061   static Dpair Ei3Err( const double x ); 
00062 
00064   static double Si( const double x );
00065 
00067   static Dpair SiErr( const double x ); 
00068 
00070   static double Ci( const double x );
00071 
00073   static Dpair CiErr( const double x ); 
00074 
00076   static double AtanInt( const double x );
00077 
00079   static Dpair AtanIntErr( const double x ); 
00080 
00082   static double Li( const double x );
00083 
00085   static Dpair LiErr( const double x ); 
00086 
00087 };  // ExpIntegrals
00088 
00089 ZM_END_NAMESPACE( zmsf )        /*  }  // namespace zmsf  */
00090 
00091 #endif  /* EXPINTEGRALS_H */

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