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label.H
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1 /*---------------------------------------------------------------------------*\
2  ========= |
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4  \\ / O peration |
5  \\ / A nd | Copyright (C) 2011-2014 OpenFOAM Foundation
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23 
24 Typedef
25  Foam::label
26 
27 Description
28  A label is an int32_t or int64_t as specified by the pre-processor macro
29  WM_LABEL_SIZE.
30 
31  A readLabel function is defined so that label can be constructed from
32  Istream.
33 
34 \*---------------------------------------------------------------------------*/
35 
36 #ifndef label_H
37 #define label_H
38 
39 #include "int.H"
40 
41 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
42 
43 #define INT_ADD_SIZE(x,s,y) x ## s ## y
44 #define INT_ADD_DEF_SIZE(x,s,y) INT_ADD_SIZE(x,s,y)
45 #define INT_SIZE(x,y) INT_ADD_DEF_SIZE(x,WM_LABEL_SIZE,y)
46 
47 #if WM_LABEL_SIZE != 32 && WM_LABEL_SIZE != 64
48  #error "label.H: WM_LABEL_SIZE must be set to either 32 or 64"
49 #endif
50 
51 
52 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
53 
54 namespace Foam
55 {
56 
57 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
58 
59 typedef INT_SIZE(int, _t) label;
60 
61 static const label labelMin = INT_SIZE(INT, _MIN);
62 static const label labelMax = INT_SIZE(INT, _MAX);
63 
64 inline label readLabel(Istream& is)
65 {
66  return INT_SIZE(readInt,) (is);
67 }
68 
69 
70 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
71 
72 //- Raise one label to the power of another
73 label pow(label a, label b);
74 
75 //- Evaluate n! : 0 < n <= 12
76 label factorial(label n);
77 
78 
79 inline label& setComponent(label& l, const direction)
80 {
81  return l;
82 }
83 
84 inline label component(const label l, const direction)
85 {
86  return l;
87 }
88 
89 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
90 
91 } // End namespace Foam
92 
93 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
94 
95 #include "labelSpecific.H"
96 
97 #undef INT_ADD_SIZE
98 #undef INT_ADD_DEF_SIZE
99 #undef INT_SIZE
100 
101 #endif
102 
103 // ************************************************************************* //
System integer.
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
int readInt(Istream &)
Definition: intIO.C:31
uint8_t direction
Definition: direction.H:45
An Istream is an abstract base class for all input systems (streams, files, token lists etc)...
Definition: Istream.H:57
const dimensionedScalar b
Wien displacement law constant: default SI units: [m.K].
Definition: createFields.H:27
label factorial(label n)
Evaluate n! : 0 < n <= 12.
Definition: label.C:63
static const label labelMax
Definition: label.H:62
label readLabel(Istream &is)
Definition: label.H:64
dimensionedScalar pow(const dimensionedScalar &ds, const dimensionedScalar &expt)
label n
label & setComponent(label &l, const direction)
Definition: label.H:79
#define INT_SIZE(x, y)
Definition: label.H:45
void component(FieldField< Field, typename FieldField< Field, Type >::cmptType > &sf, const FieldField< Field, Type > &f, const direction d)
static const label labelMin
Definition: label.H:61
Namespace for OpenFOAM.