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163 lines
4.6 KiB
163 lines
4.6 KiB
/* |
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* Copyright 2008-2012 NVIDIA Corporation |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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#include <thrust/random/linear_congruential_engine.h> |
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#include <thrust/random/detail/mod.h> |
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#include <thrust/random/detail/random_core_access.h> |
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namespace thrust |
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{ |
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namespace random |
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{ |
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template<typename UIntType, UIntType a, UIntType c, UIntType m> |
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linear_congruential_engine<UIntType,a,c,m> |
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::linear_congruential_engine(result_type s) |
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{ |
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seed(s); |
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} // end linear_congruential_engine::linear_congruential_engine() |
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template<typename UIntType, UIntType a, UIntType c, UIntType m> |
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void linear_congruential_engine<UIntType,a,c,m> |
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::seed(result_type s) |
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{ |
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if((detail::mod<UIntType, 1, 0, m>(c) == 0) && |
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(detail::mod<UIntType, 1, 0, m>(s) == 0)) |
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m_x = detail::mod<UIntType, 1, 0, m>(1); |
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else |
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m_x = detail::mod<UIntType, 1, 0, m>(s); |
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} // end linear_congruential_engine::seed() |
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template<typename UIntType, UIntType a, UIntType c, UIntType m> |
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typename linear_congruential_engine<UIntType,a,c,m>::result_type |
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linear_congruential_engine<UIntType,a,c,m> |
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::operator()(void) |
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{ |
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m_x = detail::mod<UIntType,a,c,m>(m_x); |
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return m_x; |
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} // end linear_congruential_engine::operator()() |
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template<typename UIntType, UIntType a, UIntType c, UIntType m> |
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void linear_congruential_engine<UIntType,a,c,m> |
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::discard(unsigned long long z) |
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{ |
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thrust::random::detail::linear_congruential_engine_discard::discard(*this,z); |
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} // end linear_congruential_engine::discard() |
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template<typename UIntType, UIntType a, UIntType c, UIntType m> |
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template<typename CharT, typename Traits> |
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std::basic_ostream<CharT,Traits>& linear_congruential_engine<UIntType,a,c,m> |
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::stream_out(std::basic_ostream<CharT,Traits> &os) const |
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{ |
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typedef std::basic_ostream<CharT,Traits> ostream_type; |
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typedef typename ostream_type::ios_base ios_base; |
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// save old flags & fill character |
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const typename ios_base::fmtflags flags = os.flags(); |
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const CharT fill = os.fill(); |
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os.flags(ios_base::dec | ios_base::fixed | ios_base::left); |
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os.fill(os.widen(' ')); |
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// output one word of state |
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os << m_x; |
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// restore flags & fill character |
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os.flags(flags); |
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os.fill(fill); |
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return os; |
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} |
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template<typename UIntType, UIntType a, UIntType c, UIntType m> |
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template<typename CharT, typename Traits> |
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std::basic_istream<CharT,Traits>& linear_congruential_engine<UIntType,a,c,m> |
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::stream_in(std::basic_istream<CharT,Traits> &is) |
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{ |
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typedef std::basic_istream<CharT,Traits> istream_type; |
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typedef typename istream_type::ios_base ios_base; |
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// save old flags |
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const typename ios_base::fmtflags flags = is.flags(); |
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is.flags(ios_base::dec); |
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// input one word of state |
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is >> m_x; |
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// restore flags |
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is.flags(flags); |
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return is; |
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} |
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template<typename UIntType, UIntType a, UIntType c, UIntType m> |
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bool linear_congruential_engine<UIntType,a,c,m> |
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::equal(const linear_congruential_engine<UIntType,a,c,m> &rhs) const |
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{ |
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return m_x == rhs.m_x; |
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} |
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template<typename UIntType_, UIntType_ a_, UIntType_ c_, UIntType_ m_> |
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__host__ __device__ |
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bool operator==(const linear_congruential_engine<UIntType_,a_,c_,m_> &lhs, |
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const linear_congruential_engine<UIntType_,a_,c_,m_> &rhs) |
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{ |
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return detail::random_core_access::equal(lhs,rhs); |
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} |
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template<typename UIntType, UIntType a, UIntType c, UIntType m> |
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bool operator!=(const linear_congruential_engine<UIntType,a,c,m> &lhs, |
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const linear_congruential_engine<UIntType,a,c,m> &rhs) |
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{ |
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return !(lhs == rhs); |
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} |
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template<typename UIntType_, UIntType_ a_, UIntType_ c_, UIntType_ m_, |
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typename CharT, typename Traits> |
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std::basic_ostream<CharT,Traits>& |
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operator<<(std::basic_ostream<CharT,Traits> &os, |
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const linear_congruential_engine<UIntType_,a_,c_,m_> &e) |
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{ |
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return detail::random_core_access::stream_out(os,e); |
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} |
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template<typename UIntType_, UIntType_ a_, UIntType_ c_, UIntType_ m_, |
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typename CharT, typename Traits> |
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std::basic_istream<CharT,Traits>& |
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operator>>(std::basic_istream<CharT,Traits> &is, |
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linear_congruential_engine<UIntType_,a_,c_,m_> &e) |
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{ |
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return detail::random_core_access::stream_in(is,e); |
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} |
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} // end random |
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} // end thrust |
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