Legends-of-Azeroth-Pandaria-5.4.8

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/*
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 * This file is part of the Pandaria 5.4.8 Project. See AUTHORS file for Copyright information
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 *
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 * This program is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License as published by the
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 * Free Software Foundation; either version 2 of the License, or (at your
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 * option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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 * more details.
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 *
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 * You should have received a copy of the GNU General Public License along
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 * with this program. If not, see <http://www.gnu.org/licenses/>.
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 */
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#include "SFMT.h"
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#include "SFMTRand.h"
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#include <algorithm>
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#include <array>
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#include <functional>
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#include <random>
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#include <ctime>
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#if defined(__aarch64__)
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    #if defined(__clang__)
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        #include <mm_malloc.h>
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    #elif defined(__GNUC__)
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        static __inline__ void *__attribute__((__always_inline__, __nodebug__, __malloc__))
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        _mm_malloc(size_t __size, size_t __align)
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        {
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            if (__align == 1)
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            {
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                return malloc(__size);
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            }
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            if (!(__align & (__align - 1)) && __align < sizeof(void *))
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                __align = sizeof(void *);
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            void *__mallocedMemory;
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            if (posix_memalign(&__mallocedMemory, __align, __size))
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                return NULL;
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            return __mallocedMemory;
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        }
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        static __inline__ void __attribute__((__always_inline__, __nodebug__))
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        _mm_free(void *__p)
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        {
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            free(__p);
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        }
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    #else
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        #error aarch64 only on clang and gcc
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    #endif
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#else
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    #include <emmintrin.h>
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#endif
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SFMTRand::SFMTRand()
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{
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    std::random_device dev;
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    if (dev.entropy() > 0)
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    {
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        std::array<uint32, SFMT_N32> seed;
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        std::generate(seed.begin(), seed.end(), std::ref(dev));
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        sfmt_init_by_array(&_state, seed.data(), seed.size());
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    }
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    else
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        sfmt_init_gen_rand(&_state, uint32(time(nullptr)));
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}
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uint32 SFMTRand::RandomUInt32()                            // Output random bits
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{
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    return sfmt_genrand_uint32(&_state);
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}
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void* SFMTRand::operator new(size_t size, std::nothrow_t const&)
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{
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    return _mm_malloc(size, 16);
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}
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void SFMTRand::operator delete(void* ptr, std::nothrow_t const&)
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{
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    _mm_free(ptr);
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}
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void* SFMTRand::operator new(size_t size)
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{
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    return _mm_malloc(size, 16);
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}
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void SFMTRand::operator delete(void* ptr)
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{
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    _mm_free(ptr);
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}
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void* SFMTRand::operator new[](size_t size, std::nothrow_t const&)
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{
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    return _mm_malloc(size, 16);
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}
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void SFMTRand::operator delete[](void* ptr, std::nothrow_t const&)
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{
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    _mm_free(ptr);
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}
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void* SFMTRand::operator new[](size_t size)
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{
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    return _mm_malloc(size, 16);
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}
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void SFMTRand::operator delete[](void* ptr)
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{
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    _mm_free(ptr);
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}
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