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API library: /home/docs/checkouts/readthedocs.org/user_builds/advanced-micro-devices-rocrand/checkouts/docs-6.1.2/library/include/rocrand/rocrand_threefry_common.h Source File
API library
rocrand_threefry_common.h
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21 /*
22 Copyright 2010-2011, D. E. Shaw Research.
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24 
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27 met:
28 
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30  notice, this list of conditions, and the following disclaimer.
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51 */
52 
53 #ifndef ROCRAND_THREEFRY_COMMON_H_
54 #define ROCRAND_THREEFRY_COMMON_H_
55 
56 #ifndef FQUALIFIERS
57  #define FQUALIFIERS __forceinline__ __device__
58 #endif // FQUALIFIERS
59 
60 #include "rocrand/rocrand_common.h"
61 
62 // C240 constant for Skein Hash function Threefish
63 #define SKEIN_MK_64(hi32, lo32) ((lo32) + (((unsigned long long)(hi32)) << 32))
64 #define SKEIN_KS_PARITY64 SKEIN_MK_64(0x1BD11BDA, 0xA9FC1A22)
65 #define SKEIN_KS_PARITY32 0x1BD11BDA
66 
67 namespace rocrand_device
68 {
69 
70 template<typename value>
71 FQUALIFIERS value rotl(value x, int d);
72 
73 template<>
74 FQUALIFIERS unsigned long long rotl<unsigned long long>(unsigned long long x, int d)
75 {
76  return ((x << d) | (x >> (64 - d) & 63));
77 };
78 
79 template<>
80 FQUALIFIERS unsigned int rotl<unsigned int>(unsigned int x, int d)
81 {
82  return (x << (d & 31)) | (x >> ((32 - d) & 31));
83 };
84 
85 template<typename value>
86 FQUALIFIERS value skein_ks_parity();
87 
88 template<>
89 FQUALIFIERS unsigned int skein_ks_parity<unsigned int>()
90 {
91  return SKEIN_KS_PARITY32;
92 }
93 
94 template<>
95 FQUALIFIERS unsigned long long skein_ks_parity<unsigned long long>()
96 {
97  return SKEIN_KS_PARITY64;
98 }
99 
100 } // end namespace rocrand_device
101 
102 #endif // ROCRAND_THREEFRY_COMMON_H_
FQUALIFIERS
#define FQUALIFIERS
Shorthand for commonly used function qualifiers.
Definition: rocrand_uniform.h:31
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