label.C
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25 
26 #include "label.H"
27 #include "error.H"
28 
29 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
30 
31 #if WM_LABEL_SIZE == 32
32 const char* const Foam::pTraits<int64_t>::typeName = "int64";
33 const char* const Foam::pTraits<int32_t>::typeName = "label";
34 #elif WM_LABEL_SIZE == 64
35 const char* const Foam::pTraits<int64_t>::typeName = "label";
36 const char* const Foam::pTraits<int32_t>::typeName = "int32";
37 #endif
38 
39 
40 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
41 
43 {
44  label ans = 1;
45  for (label i=0; i<b; i++)
46  {
47  ans *= a;
48  }
49 
50  #ifdef FULLDEBUG
51  if (b < 0)
52  {
54  << "negative value for b is not supported"
55  << abort(FatalError);
56  }
57  #endif
58 
59  return ans;
60 }
61 
62 
64 {
65  static label factTable[13] =
66  {
67  1, 1, 2, 6, 24, 120, 720, 5040, 40320,
68  362880, 3628800, 39916800, 479001600
69  };
70 
71  #ifdef FULLDEBUG
72  if (n > 12 || n < 0)
73  {
75  << "n value out of range"
76  << abort(FatalError);
77  }
78  #endif
79 
80  return factTable[n];
81 }
82 
83 
84 // ************************************************************************* //
label n
Traits class for primitives.
Definition: pTraits.H:53
#define FatalErrorInFunction
Report an error message using Foam::FatalError.
Definition: error.H:306
volScalarField & b
Definition: createFields.H:27
intWM_LABEL_SIZE_t label
A label is an int32_t or int64_t as specified by the pre-processor macro WM_LABEL_SIZE.
Definition: label.H:59
errorManip< error > abort(error &err)
Definition: errorManip.H:131
dimensionedScalar pow(const dimensionedScalar &ds, const dimensionedScalar &expt)
label factorial(label n)
Return n! : 0 < n <= 12.
Definition: label.C:63
error FatalError