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Arpack.hpp
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1 ///////////////////////////////////////////////////////////////////////////////
2 //
3 // File Arpack.hpp
4 //
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7 // The MIT License
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9 // Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
10 // Department of Aeronautics, Imperial College London (UK), and Scientific
11 // Computing and Imaging Institute, University of Utah (USA).
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13 // License for the specific language governing rights and limitations under
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31 //
32 // Description: wrapper of functions around standard Arpack routines.
33 //
34 ///////////////////////////////////////////////////////////////////////////////
35 
36 #ifndef NEKTAR_LIB_UTILITIES_LINEAR_ALGEBRA_ARPACK_HPP
37 #define NEKTAR_LIB_UTILITIES_LINEAR_ALGEBRA_ARPACK_HPP
38 
39 #include <LibUtilities/LinearAlgebra/TransF77.hpp>
40 
41 // Translations for using Fortran version of arpack
42 namespace Arpack
43 {
44  extern "C"
45  {
46  //ARPACK ROUTINES
47 
48  //Computation of eigenvalues
49 
50  void F77NAME(dsaupd) (int& ido, const char* bmat,
51  const int& n, const char* which,
52  const int& nev, const double& tol,
53  double* resid, const int& ncv,
54  double* v, const int& ldv,
55  int* iparam, int* ipntr,
56  double* workd, double* workl,
57  const int& lworkl, int& info );
58 
59  void F77NAME(dnaupd) (int& ido, const char* bmat,
60  const int& n, const char* which,
61  const int& nev, const double& tol,
62  double* resid, const int& ncv,
63  double* v, const int& ldv,
64  int* iparam, int* ipntr,
65  double* workd, double* workl,
66  const int& lworkl, int& info);
67 
68 
69 
70  //Computation of eigenvectors
71  void F77NAME(dseupd) (const int& rvec, const char* howmny,
72  const int* select, double* d,
73  double* z , const int& ldz,
74  const double& sigma,const char* bmat,
75  const int& n, const char* which,
76  const int& nev, const double& tol,
77  double* resid, const int& ncv,
78  double* v, const int& ldv,
79  const int* iparam, int* ipntr,
80  const double* workd,double* workl,
81  const int& lworkl, int& info);
82 
83  void F77NAME(dneupd) (const int& rvec, const char* howmny,
84  const int* select, double* dr,
85  double* di, double* z ,
86  const int& ldz, const double& sigmar,
87  const double& sigmai,double* workev,
88  const char* bmat, const int& n,
89  const char* which, const int& nev,
90  const double& tol, double* resid,
91  const int& ncv, double* v,
92  const int& ldv, int* iparam,
93  int* ipntr, double* workd,
94  double* workl, const int& lworkl, int& info);
95 
96  }
97 
98 //#ifdef NEKTAR_USING_ARPACK
99 
100 
101  ///Top level reverse communication interface to solve real double-precision symmetric problems
102 
103  static inline void Dsaupd ( int& ido, const char* bmat,
104  const int& n, const char* which,
105  const int& nev, const double& tol,
106  double* resid, const int& ncv,
107  double* v, const int& ldv,
108  int* iparam, int* ipntr,
109  double* workd, double* workl,
110  const int& lworkl, int& info)
111  {
112  F77NAME(dsaupd) (ido,bmat,n,which,nev,tol,resid,ncv,v,ldv,iparam,ipntr,workd,workl,lworkl,info);
113  }
114 
115 
116 
117  /// Post-processing routine to computed eigenvector of computed eigenvalues in Dsaupd
118  static inline void Dseupd (const int& rvec, const char* howmny,
119  const int* select, double* d,
120  double* z , const int& ldz,
121  const double& sigma, const char* bmat,
122  const int& n, const char* which,
123  const int& nev, const double& tol,
124  double* resid, const int& ncv,
125  double* v, const int& ldv,
126  int* iparam, int* ipntr,
127  double* workd, double* workl,
128  const int& lworkl, int& info)
129  {
130  F77NAME(dseupd) (rvec,howmny, select,d,z,ldz,sigma,bmat,n,which,nev,tol,resid,ncv,v,ldv,iparam,ipntr,workd,workl,lworkl,info);
131  }
132 
133 
134  ///Top level reverse communication interface to solve real double-precision non-symmetric problems
135  static inline void Dnaupd ( int& ido, const char* bmat,
136  const int& n, const char* which,
137  const int& nev, const double& tol,
138  double* resid, const int& ncv,
139  double* v, const int& ldv,
140  int* iparam, int* ipntr,
141  double* workd, double* workl,
142  const int& lworkl, int& info)
143  {
144  F77NAME(dnaupd) (ido,bmat,n,which,nev,tol,resid,ncv,v,ldv,iparam,ipntr,workd,workl,lworkl,info);
145  }
146 
147  /// Post-processing routine to computed eigenvector of computed eigenvalues in Dnaupd
148 
149  static inline void Dneupd(const int& rvec, const char* howmny,
150  const int* select, double* dr,
151  double* di, double* z ,
152  const int& ldz, const double& sigmar,
153  const double& sigmai,double* workev,
154  const char* bmat, const int& n,
155  const char* which, const int& nev,
156  const double& tol, double* resid,
157  const int& ncv, double* v,
158  const int& ldv, int* iparam,
159  int* ipntr, double* workd,
160  double* workl, const int& lworkl, int& info)
161  {
162  F77NAME(dneupd) (rvec,howmny,select,dr,di,z,ldz,sigmar,sigmai,workev,bmat,n,which,nev,tol,resid,ncv,v,ldv,iparam,ipntr,workd,workl,lworkl,info);
163  }
164 
165 
166 
167 //#endif //NEKTAR_USING_ARPACK
168 }
169 #endif //NEKTAR_LIB_UTILITIES_LINEAR_ALGEBRA_ARPACK_HPP
170 
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