Skip to main content
`Ctrl`+`K`

# /build/rocrand-7S8maf/rocrand-7.1.1/library/include/rocrand/rocrand_common.h Source File

API library: /build/rocrand-7S8maf/rocrand-7.1.1/library/include/rocrand/rocrand_common.h Source File
rocrand_common.h
1// Copyright (c) 2017-2025 Advanced Micro Devices, Inc. All rights reserved.
2//
3// Permission is hereby granted, free of charge, to any person obtaining a copy
4// of this software and associated documentation files (the "Software"), to deal
5// in the Software without restriction, including without limitation the rights
6// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7// copies of the Software, and to permit persons to whom the Software is
8// furnished to do so, subject to the following conditions:
9//
10// The above copyright notice and this permission notice shall be included in
11// all copies or substantial portions of the Software.
12//
13// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
19// THE SOFTWARE.
20
21#ifndef ROCRAND_COMMON_H_
22#define ROCRAND_COMMON_H_
23
24#define ROCRAND_2POW16_INV (1.5258789e-05f)
25#define ROCRAND_2POW16_INV_2PI (9.58738e-05f)
26#define ROCRAND_2POW32_INV (2.3283064e-10f)
27#define ROCRAND_2POW32_INV_DOUBLE (2.3283064365386963e-10)
28#define ROCRAND_2POW64_INV (5.4210109e-20f)
29#define ROCRAND_2POW64_INV_DOUBLE (5.4210108624275221700372640043497e-20)
30#define ROCRAND_2POW32_INV_2PI (1.46291807e-09f)
31#define ROCRAND_2POW53_INV_DOUBLE (1.1102230246251565e-16)
32#define ROCRAND_PI (3.141592653f)
33#define ROCRAND_PI_DOUBLE (3.1415926535897932)
34#define ROCRAND_2PI (6.2831855f)
35#define ROCRAND_SQRT2 (1.4142135f)
36#define ROCRAND_SQRT2_DOUBLE (1.4142135623730951)
37
38#include <hip/hip_runtime.h>
39#include <utility>
40
41#define ROCRAND_KERNEL __global__ static
42
43#if __HIP_DEVICE_COMPILE__ \
44 && (defined(__HIP_PLATFORM_AMD__) \
45 || (defined(__HIP_PLATFORM_NVCC__) && (__CUDA_ARCH__ >= 530)))
46 #define ROCRAND_HALF_MATH_SUPPORTED
47#endif
48
49// Copyright 2001 John Maddock.
50// Copyright 2017 Peter Dimov.
51//
52// Distributed under the Boost Software License, Version 1.0.
53//
54// See http://www.boost.org/LICENSE_1_0.txt
55//
56// BOOST_STRINGIZE(X)
57#define ROCRAND_STRINGIZE(X) ROCRAND_DO_STRINGIZE(X)
58#define ROCRAND_DO_STRINGIZE(X) #X
59
60// Copyright 2017 Peter Dimov.
61//
62// Distributed under the Boost Software License, Version 1.0.
63//
64// See http://www.boost.org/LICENSE_1_0.txt
65//
66// BOOST_PRAGMA_MESSAGE("message")
67//
68// Expands to the equivalent of #pragma message("message")
69#if defined(__INTEL_COMPILER)
70 #define ROCRAND_PRAGMA_MESSAGE(x) \
71 __pragma(message(__FILE__ "(" ROCRAND_STRINGIZE(__LINE__) "): note: " x))
72#elif defined(__GNUC__)
73 #define ROCRAND_PRAGMA_MESSAGE(x) _Pragma(ROCRAND_STRINGIZE(message(x)))
74#elif defined(_MSC_VER)
75 #define ROCRAND_PRAGMA_MESSAGE(x) \
76 __pragma(message(__FILE__ "(" ROCRAND_STRINGIZE(__LINE__) "): note: " x))
77#else
78 #define ROCRAND_PRAGMA_MESSAGE(x)
79#endif
80
81#if __cplusplus >= 201402L
82 #define ROCRAND_DEPRECATED(msg) [[deprecated(msg)]]
83#elif defined(_MSC_VER) && !defined(__clang__)
84 #define ROCRAND_DEPRECATED(msg) __declspec(deprecated(msg))
85#elif defined(__clang__) || defined(__GNUC__)
86 #define ROCRAND_DEPRECATED(msg) __attribute__((deprecated(msg)))
87#else
88 #define ROCRAND_DEPRECATED(msg)
89#endif
90
91// This is an accessor macro for HIP vector types (eg. int2, float4, etc.).
92// Prior to HIP 7.0, individual elements could be accessed through the
93// data member:
94//
95// int2 vec;
96// vec.data[0] = 1;
97//
98// Beginning with HIP 7.0, the data member is hidden, and individual
99// elements must be accessed like this:
100//
101// int2 vec;
102// vec[0] = 1;
103//
104// You can use the macro like this:
105//
106// int2 vec;
107// ROCRAND_HIPVEC_ACCESS(vec)[0];
108//
109#if defined(__HIP_PLATFORM_AMD__)
110 #if HIP_VERSION_MAJOR < 7
111 #define ROCRAND_HIPVEC_ACCESS(x) x.data
112 #else
113 #define ROCRAND_HIPVEC_ACCESS(x) x
114 #endif
115#endif
116
117 namespace rocrand_device {
118 namespace detail {
119
120__forceinline__ __device__ __host__
121 unsigned long long
122 mad_u64_u32(const unsigned int x, const unsigned int y, const unsigned long long z)
123{
124 return static_cast<unsigned long long>(x) * static_cast<unsigned long long>(y) + z;
125}
126
127__forceinline__ __device__ __host__
128 unsigned long long mul_u64_u32(const unsigned int x, const unsigned int y)
129{
130 return static_cast<unsigned long long>(x) * static_cast<unsigned long long>(y);
131}
132
133// This helps access fields of engine's internal state which
134// saves floats and doubles generated using the Box–Muller transform
135 template<typename Engine>
136 struct engine_boxmuller_helper
137{
138 static __forceinline__ __device__ __host__ bool has_float(const Engine* engine)
139 {
140 return engine->m_state.boxmuller_float_state != 0;
141 }
142
143 static __forceinline__ __device__ __host__ float get_float(Engine* engine)
144 {
145 engine->m_state.boxmuller_float_state = 0;
146 return engine->m_state.boxmuller_float;
147 }
148
149 static __forceinline__ __device__ __host__ void save_float(Engine* engine, float f)
150 {
151 engine->m_state.boxmuller_float_state = 1;
152 engine->m_state.boxmuller_float = f;
153 }
154
155 static __forceinline__ __device__ __host__ bool has_double(const Engine* engine)
156 {
157 return engine->m_state.boxmuller_double_state != 0;
158 }
159
160 static __forceinline__ __device__ __host__ float get_double(Engine* engine)
161 {
162 engine->m_state.boxmuller_double_state = 0;
163 return engine->m_state.boxmuller_double;
164 }
165
166 static __forceinline__ __device__ __host__ void save_double(Engine* engine, double d)
167 {
168 engine->m_state.boxmuller_double_state = 1;
169 engine->m_state.boxmuller_double = d;
170 }
171};
172
173 template<typename T>
174__forceinline__ __device__ __host__ void split_ull(T& lo, T& hi, unsigned long long int val);
175
176 template<>
177__forceinline__ __device__ __host__ void
178 split_ull(unsigned int& lo, unsigned int& hi, unsigned long long int val)
179{
180 lo = val & 0xFFFFFFFF;
181 hi = (val >> 32) & 0xFFFFFFFF;
182}
183
184 template<>
185__forceinline__ __device__ __host__ void
186 split_ull(unsigned long long int& lo, unsigned long long int& hi, unsigned long long int val)
187{
188 lo = val;
189 hi = 0;
190}
191
192} // end namespace detail
193} // end namespace rocrand_device
194
195#endif // ROCRAND_COMMON_H_