dune-common  2.4.1
precision.hh
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1 // -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2 // vi: set et ts=4 sw=2 sts=2:
3 #ifndef DUNE_PRECISION_HH
4 #define DUNE_PRECISION_HH
5 
10 #include <stdlib.h>
11 
12 namespace Dune {
13 
22  template <class ctype = double>
24  public:
26  static ctype pivoting_limit ()
27  {
28  return _pivoting;
29  }
30 
32  static void set_pivoting_limit (ctype pivthres)
33  {
34  _pivoting = pivthres;
35  }
36 
38  static ctype singular_limit ()
39  {
40  return _singular;
41  }
42 
44  static void set_singular_limit (ctype singthres)
45  {
46  _singular = singthres;
47  }
48 
50  static ctype absolute_limit ()
51  {
52  return _absolute;
53  }
54 
56  static void set_absolute_limit (ctype absthres)
57  {
58  _absolute = absthres;
59  }
60 
61  private:
62  // just to demonstrate some state information
63  static ctype _pivoting;
64  static ctype _singular;
65  static ctype _absolute;
66  };
67 
68  template <class ctype>
70  template <class ctype>
72  template <class ctype>
74 
77 } // end namespace
78 
79 #endif
Precisions for calculations with FieldMatrix and FieldVector.
Definition: precision.hh:23
static ctype singular_limit()
return threshold to declare matrix singular
Definition: precision.hh:38
static void set_pivoting_limit(ctype pivthres)
set pivoting threshold
Definition: precision.hh:32
static void set_singular_limit(ctype singthres)
set singular threshold
Definition: precision.hh:44
static ctype absolute_limit()
return threshold to declare matrix singular
Definition: precision.hh:50
static ctype pivoting_limit()
return threshold to do pivoting
Definition: precision.hh:26
static void set_absolute_limit(ctype absthres)
set singular threshold
Definition: precision.hh:56
Dune namespace.
Definition: alignment.hh:9