FreeFOAM The Cross-Platform CFD Toolkit
HasherInt.H
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23 
24 InNamespace
25  Foam
26 
27 Description
28  Optimized hashing functions.
29 
30 SeeAlso
31  Hasher.H
32 
33 \*---------------------------------------------------------------------------*/
34 
35 #ifndef HasherInt_H
36 #define HasherInt_H
37 
38 #include "Hasher.H"
39 
40 #include <cstddef>
41 #include <stdint.h> // C++0x uses <cstdint>
42 
43 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
44 
45 namespace Foam
46 {
47 
48 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
49 
50  //- An optimized version of Hasher
51  // @param[in] data - an array of uint32_t values
52  // @param[in] length - the number of values (not bytes)
53  // @param[in] seed - the previous hash, or an arbitrary value
54  unsigned HasherInt(const uint32_t* data, size_t length, unsigned seed = 0);
55 
56  //- An optimized version of Hasher, returning dual hash values
57  // @param[in] data - an array of uint32_t values
58  // @param[in] len - the number of values (not bytes)
59  // @param[in] hash1 - the previous hash, or an arbitrary value
60  // on output, the primary hash value
61  // @param[in] hash1 - the previous hash, or an arbitrary value
62  // on output, the secondary hash value
63  unsigned HasherDual
64  (
65  const uint32_t* data,
66  size_t len,
67  unsigned& hash1,
68  unsigned& hash2
69  );
70 
71 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
72 
73 } // End namespace Foam
74 
75 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
76 
77 #endif
78 
79 // ************************ vim: set sw=4 sts=4 et: ************************ //