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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,117 @@ | ||
| /* Copyright (C) 2019 by Nikita Kniazev | ||
| * | ||
| * Permission to use, copy, modify, and/or distribute this software for any | ||
| * purpose with or without fee is hereby granted. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH | ||
| * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY | ||
| * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, | ||
| * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM | ||
| * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR | ||
| * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR | ||
| * PERFORMANCE OF THIS SOFTWARE. | ||
| */ | ||
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| #ifndef NK_MT19937 | ||
| #define NK_MT19937 | ||
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| #include <stddef.h> | ||
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| #if defined(_MSC_VER) && (_MSC_VER < 1600) | ||
| typedef unsigned __int32 uint32_t; | ||
| #else | ||
| # include <stdint.h> | ||
| # include <inttypes.h> | ||
| #endif | ||
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| class mt19937 | ||
| { | ||
| public: | ||
| typedef uint32_t result_type; | ||
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| static const size_t word_size = 32; | ||
| static const size_t state_size = 624; | ||
| static const size_t shift_size = 397; | ||
| static const size_t mask_bits = 31; | ||
| static const uint32_t xor_mask = 0x9908b0df; | ||
| static const size_t tempering_u = 11; | ||
| static const uint32_t tempering_d = 0xffffffff; | ||
| static const size_t tempering_s = 7; | ||
| static const uint32_t tempering_b = 0x9d2c5680; | ||
| static const size_t tempering_t = 15; | ||
| static const uint32_t tempering_c = 0xefc60000; | ||
| static const size_t tempering_l = 18; | ||
| static const uint32_t initialization_multiplier = 1812433253; | ||
| static const uint32_t default_seed = 5489u; | ||
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| explicit mt19937(uint32_t value = default_seed) { seed(value); } | ||
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| void seed(uint32_t value = default_seed) | ||
| { | ||
| state[0] = value; | ||
| for (uint32_t i = 1; i < state_size; ++i) | ||
| state[i] = i + initialization_multiplier * (state[i - 1] ^ (state[i - 1] >> 30)); | ||
| index = 0; | ||
| } | ||
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| result_type operator()() | ||
| { | ||
| uint32_t next = (index + 1) % state_size; | ||
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| uint32_t y = (0x80000000 & state[index]) | (0x7fffffff & state[next]); | ||
| uint32_t r = state[index] = state[(index + shift_size) % state_size] ^ (y >> 1) ^ ((-(y & 1)) & xor_mask); | ||
| r ^= r >> tempering_u & tempering_d; | ||
| r ^= r << tempering_s & tempering_b; | ||
| r ^= r << tempering_t & tempering_c; | ||
| r ^= r >> tempering_l; | ||
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| index = next; | ||
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| return r; | ||
| } | ||
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| result_type (min)() const { return 0; } | ||
| result_type (max)() const { return 0xffffffffUL; } | ||
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| template <typename OStream> | ||
| friend OStream& operator<<(OStream& os, mt19937 const& g) | ||
| { | ||
| typename OStream::fmtflags saved_flags = os.flags(os.dec); | ||
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| for (uint32_t i = g.index; i < state_size; ++i) | ||
| os << g.state[i] << ' '; | ||
| for (uint32_t i = 0; i < g.index; ++i) | ||
| os << g.state[i] << ' '; | ||
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| os.flags(saved_flags); | ||
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| return os; | ||
| } | ||
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| template <typename IStream> | ||
| friend IStream& operator>>(IStream& is, mt19937& g) | ||
| { | ||
| typename IStream::fmtflags saved_flags = is.flags(is.dec | is.skipws); | ||
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| uint32_t tmp[state_size]; | ||
| for (uint32_t i = 0; i < state_size; ++i) | ||
| is >> tmp[i]; | ||
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| is.flags(saved_flags); | ||
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| if (is.good()) { | ||
| for (uint32_t i = 0; i < state_size; ++i) | ||
| g.state[i] = tmp[i]; | ||
| g.index = 0; | ||
| } | ||
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| return is; | ||
| } | ||
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| private: | ||
| uint32_t state[state_size]; | ||
| uint32_t index; | ||
| }; | ||
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| #endif // NK_MT19937 |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| /* Copyright (C) 2019 by Nikita Kniazev | ||
| * | ||
| * Permission to use, copy, modify, and/or distribute this software for any | ||
| * purpose with or without fee is hereby granted. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH | ||
| * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY | ||
| * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, | ||
| * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM | ||
| * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR | ||
| * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR | ||
| * PERFORMANCE OF THIS SOFTWARE. | ||
| */ | ||
|
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| #ifndef NK_SCOPED_PTR | ||
| #define NK_SCOPED_PTR | ||
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| namespace utils { | ||
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| struct bool_conversion { int padding; int truth; }; | ||
| typedef int bool_conversion::* explicit_bool; | ||
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| } | ||
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| template<class T> | ||
| class scoped_ptr { | ||
| public: | ||
| typedef T* pointer; | ||
| typedef T element_type; | ||
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| scoped_ptr() throw() : p_() {} | ||
| explicit scoped_ptr(pointer p) throw() : p_(p) {} | ||
| ~scoped_ptr() { destroy(); } | ||
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| element_type& operator*() const { return *get(); } | ||
| pointer operator->() const throw() { return get(); } | ||
| pointer get() const throw() { return p_; } | ||
| operator bool() const throw() { return get() != pointer(); } | ||
| operator utils::explicit_bool() const | ||
| { | ||
| return get() != pointer() ? &utils::bool_conversion::truth | ||
| : utils::explicit_bool(0); | ||
| } | ||
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| pointer release() throw() { pointer p = p_; p_ = pointer(); return p; } | ||
| void reset(pointer p = pointer()) throw() { destroy(); p_ = p; } | ||
| void swap(scoped_ptr& u) throw() | ||
| { | ||
| pointer p = release(); | ||
| p_ = u.release(); | ||
| u.p_ = p; | ||
| } | ||
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| private: | ||
| scoped_ptr(const scoped_ptr&); | ||
| scoped_ptr& operator=(const scoped_ptr&); | ||
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| void destroy() { delete get(); } | ||
|
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| pointer p_; | ||
| }; | ||
|
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| #endif // ALE_SCOPED_PTR |
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