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Diffstat (limited to 'extern/ceres/internal/ceres/collections_port.h')
| -rw-r--r-- | extern/ceres/internal/ceres/collections_port.h | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/extern/ceres/internal/ceres/collections_port.h b/extern/ceres/internal/ceres/collections_port.h deleted file mode 100644 index e699a661b8b..00000000000 --- a/extern/ceres/internal/ceres/collections_port.h +++ /dev/null @@ -1,196 +0,0 @@ -// Ceres Solver - A fast non-linear least squares minimizer -// Copyright 2015 Google Inc. All rights reserved. -// http://ceres-solver.org/ -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are met: -// -// * Redistributions of source code must retain the above copyright notice, -// this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above copyright notice, -// this list of conditions and the following disclaimer in the documentation -// and/or other materials provided with the distribution. -// * Neither the name of Google Inc. nor the names of its contributors may be -// used to endorse or promote products derived from this software without -// specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" -// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE -// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR -// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF -// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS -// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN -// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) -// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -// POSSIBILITY OF SUCH DAMAGE. -// -// Author: keir@google.com (Keir Mierle) -// -// Portable HashMap and HashSet, and a specialized overload for hashing pairs. - -#ifndef CERES_INTERNAL_COLLECTIONS_PORT_H_ -#define CERES_INTERNAL_COLLECTIONS_PORT_H_ - -#include "ceres/internal/port.h" - -#if defined(CERES_NO_UNORDERED_MAP) -# include <map> -# include <set> -#endif - -#if defined(CERES_TR1_UNORDERED_MAP) -# include <tr1/unordered_map> -# include <tr1/unordered_set> -# define CERES_HASH_NAMESPACE_START namespace std { namespace tr1 { -# define CERES_HASH_NAMESPACE_END } } -#endif - -#if defined(CERES_STD_UNORDERED_MAP) -# include <unordered_map> -# include <unordered_set> -# define CERES_HASH_NAMESPACE_START namespace std { -# define CERES_HASH_NAMESPACE_END } -#endif - -#if defined(CERES_STD_UNORDERED_MAP_IN_TR1_NAMESPACE) -# include <unordered_map> -# include <unordered_set> -# define CERES_HASH_NAMESPACE_START namespace std { namespace tr1 { -# define CERES_HASH_NAMESPACE_END } } -#endif - -#if !defined(CERES_NO_UNORDERED_MAP) && !defined(CERES_TR1_UNORDERED_MAP) && \ - !defined(CERES_STD_UNORDERED_MAP) && !defined(CERES_STD_UNORDERED_MAP_IN_TR1_NAMESPACE) // NOLINT -# error One of: CERES_NO_UNORDERED_MAP, CERES_TR1_UNORDERED_MAP,\ - CERES_STD_UNORDERED_MAP, CERES_STD_UNORDERED_MAP_IN_TR1_NAMESPACE must be defined! // NOLINT -#endif - -#include <utility> -#include "ceres/integral_types.h" - -// Some systems don't have access to unordered_map/unordered_set. In -// that case, substitute the hash map/set with normal map/set. The -// price to pay is slower speed for some operations. -#if defined(CERES_NO_UNORDERED_MAP) - -namespace ceres { -namespace internal { - -template<typename K, typename V> -struct HashMap : map<K, V> {}; - -template<typename K> -struct HashSet : set<K> {}; - -} // namespace internal -} // namespace ceres - -#else - -namespace ceres { -namespace internal { - -#if defined(CERES_TR1_UNORDERED_MAP) || \ - defined(CERES_STD_UNORDERED_MAP_IN_TR1_NAMESPACE) -template<typename K, typename V> -struct HashMap : std::tr1::unordered_map<K, V> {}; -template<typename K> -struct HashSet : std::tr1::unordered_set<K> {}; -#endif - -#if defined(CERES_STD_UNORDERED_MAP) -template<typename K, typename V> -struct HashMap : std::unordered_map<K, V> {}; -template<typename K> -struct HashSet : std::unordered_set<K> {}; -#endif - -#if defined(_WIN32) && !defined(__MINGW64__) && !defined(__MINGW32__) -#define GG_LONGLONG(x) x##I64 -#define GG_ULONGLONG(x) x##UI64 -#else -#define GG_LONGLONG(x) x##LL -#define GG_ULONGLONG(x) x##ULL -#endif - -// The hash function is due to Bob Jenkins (see -// http://burtleburtle.net/bob/hash/index.html). Each mix takes 36 instructions, -// in 18 cycles if you're lucky. On x86 architectures, this requires 45 -// instructions in 27 cycles, if you're lucky. -// -// 32bit version -inline void hash_mix(uint32& a, uint32& b, uint32& c) { - a -= b; a -= c; a ^= (c>>13); - b -= c; b -= a; b ^= (a<<8); - c -= a; c -= b; c ^= (b>>13); - a -= b; a -= c; a ^= (c>>12); - b -= c; b -= a; b ^= (a<<16); - c -= a; c -= b; c ^= (b>>5); - a -= b; a -= c; a ^= (c>>3); - b -= c; b -= a; b ^= (a<<10); - c -= a; c -= b; c ^= (b>>15); -} - -// 64bit version -inline void hash_mix(uint64& a, uint64& b, uint64& c) { - a -= b; a -= c; a ^= (c>>43); - b -= c; b -= a; b ^= (a<<9); - c -= a; c -= b; c ^= (b>>8); - a -= b; a -= c; a ^= (c>>38); - b -= c; b -= a; b ^= (a<<23); - c -= a; c -= b; c ^= (b>>5); - a -= b; a -= c; a ^= (c>>35); - b -= c; b -= a; b ^= (a<<49); - c -= a; c -= b; c ^= (b>>11); -} - -inline uint32 Hash32NumWithSeed(uint32 num, uint32 c) { - // The golden ratio; an arbitrary value. - uint32 b = 0x9e3779b9UL; - hash_mix(num, b, c); - return c; -} - -inline uint64 Hash64NumWithSeed(uint64 num, uint64 c) { - // More of the golden ratio. - uint64 b = GG_ULONGLONG(0xe08c1d668b756f82); - hash_mix(num, b, c); - return c; -} - -} // namespace internal -} // namespace ceres - -// Since on some platforms this is a doubly-nested namespace (std::tr1) and -// others it is not, the entire namespace line must be in a macro. -CERES_HASH_NAMESPACE_START - -// The outrageously annoying specializations below are for portability reasons. -// In short, it's not possible to have two overloads of hash<pair<T1, T2> - -// Hasher for STL pairs. Requires hashers for both members to be defined. -template<typename T> -struct hash<pair<T, T> > { - size_t operator()(const pair<T, T>& p) const { - size_t h1 = hash<T>()(p.first); - size_t h2 = hash<T>()(p.second); - // The decision below is at compile time - return (sizeof(h1) <= sizeof(ceres::internal::uint32)) ? - ceres::internal::Hash32NumWithSeed(h1, h2) : - ceres::internal::Hash64NumWithSeed(h1, h2); - } - // Less than operator for MSVC. - bool operator()(const pair<T, T>& a, - const pair<T, T>& b) const { - return a < b; - } - static const size_t bucket_size = 4; // These are required by MSVC - static const size_t min_buckets = 8; // 4 and 8 are defaults. -}; - -CERES_HASH_NAMESPACE_END - -#endif // CERES_NO_UNORDERED_MAP -#endif // CERES_INTERNAL_COLLECTIONS_PORT_H_ |