/home/docs/checkouts/readthedocs.org/user_builds/advanced-micro-devices-rocrand/checkouts/docs-6.2.1/library/include/rocrand/rocrand_threefry2x64_20.h Source File

/home/docs/checkouts/readthedocs.org/user_builds/advanced-micro-devices-rocrand/checkouts/docs-6.2.1/library/include/rocrand/rocrand_threefry2x64_20.h Source File#

API library: /home/docs/checkouts/readthedocs.org/user_builds/advanced-micro-devices-rocrand/checkouts/docs-6.2.1/library/include/rocrand/rocrand_threefry2x64_20.h Source File
API library
rocrand_threefry2x64_20.h
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52 
53 #ifndef ROCRAND_THREEFRY2X64_20_H_
54 #define ROCRAND_THREEFRY2X64_20_H_
55 
56 #include "rocrand/rocrand_threefry2_impl.h"
57 
58 namespace rocrand_device
59 {
60 
61 class threefry2x64_20_engine : public threefry_engine2_base<ulonglong2, unsigned long long, 20>
62 {
63 public:
64  ROCRAND_DEPRECATED("Alias \"threefry2x64_20_state\" is deprecated. Use \"state_type\" instead.")
65  typedef threefry_engine2_base<ulonglong2, unsigned long long, 20>::threefry_state_2
66  threefry2x64_20_state;
67 
73  __forceinline__ __device__ __host__ threefry2x64_20_engine(const unsigned long long seed = 0,
74  const unsigned long long subsequence
75  = 0,
76  const unsigned long long offset = 0)
77  {
78  this->seed(seed, subsequence, offset);
79  }
80 
86  __forceinline__ __device__ __host__ void seed(const unsigned long long seed = 0,
87  const unsigned long long subsequence = 0,
88  const unsigned long long offset = 0)
89  {
90  m_state.counter = {0ULL, 0ULL};
91  m_state.key = {seed, seed >> 32};
92  m_state.result = {0ULL, 0ULL};
93  m_state.substate = 0;
94 
95  this->discard_subsequence_impl(subsequence);
96  this->discard(offset);
97  m_state.result = this->threefry_rounds(m_state.counter, m_state.key);
98  }
99 
100 }; // threefry2x64_20_engine class
101 
102 } // end namespace rocrand_device
103 
104 typedef rocrand_device::threefry2x64_20_engine rocrand_state_threefry2x64_20;
105 
117 __forceinline__ __device__ __host__ void rocrand_init(const unsigned long long seed,
118  const unsigned long long subsequence,
119  const unsigned long long offset,
120  rocrand_state_threefry2x64_20* state)
121 {
122  *state = rocrand_state_threefry2x64_20(seed, subsequence, offset);
123 }
124 
139 __forceinline__ __device__ __host__ unsigned long long rocrand(rocrand_state_threefry2x64_20* state)
140 {
141  return state->next();
142 }
143 
156 __forceinline__ __device__ __host__ ulonglong2 rocrand2(rocrand_state_threefry2x64_20* state)
157 {
158  return state->next2();
159 }
160 
161 #endif // ROCRAND_THREEFRY2X64_20_H_
__forceinline__ __device__ __host__ void rocrand_init(const uint4 seed, const unsigned int subsequence, rocrand_state_lfsr113 *state)
Initializes LFSR113 state.
Definition: rocrand_lfsr113.h:238
__forceinline__ __device__ __host__ unsigned int rocrand(rocrand_state_lfsr113 *state)
Returns uniformly distributed random unsigned int value from [0; 2^32 - 1] range.
Definition: rocrand_lfsr113.h:274