Wigner.h

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#ifndef WIGNER_H
#define WIGNER_H


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

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

ZM_BEGIN_NAMESPACE( zmsf )      /*  namespace zmsf  {  */

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


struct Wigner {

  static double ThreeJ( const int two_ja, const int two_jb, const int two_jc,
                        const int two_ma, const int two_mb, const int two_mc );

  static Dpair ThreeJErr( const int two_ja, const int two_jb, const int two_jc,
                          const int two_ma, const int two_mb, const int two_mc );

  static double ClebschGordan( const int two_ja, const int two_jb, const int two_jc,
                               const int two_ma, const int two_mb, const int two_mc );

  static Dpair ClebschGordanErr( const int two_ja, const int two_jb, const int two_jc,
                                 const int two_ma, const int two_mb, const int two_mc );

  static double SixJ( const int two_ja, const int two_jb, const int two_jc,
                      const int two_jd, const int two_je, const int two_jf );

  static Dpair SixJErr( const int two_ja, const int two_jb, const int two_jc,
                        const int two_jd, const int two_je, const int two_jf );

  static double NineJ( const int two_ja, const int two_jb, const int two_jc,
                       const int two_jd, const int two_je, const int two_jf,
                       const int two_jg, const int two_jh, const int two_ji );

  static Dpair NineJErr( const int two_ja, const int two_jb, const int two_jc,
                         const int two_jd, const int two_je, const int two_jf, 
                         const int two_jg, const int two_jh, const int two_ji );

};  // Wigner

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

#endif  /* WIGNER_H */

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