| // 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 typedefs for various fixed-size integers. Uses template |
| // metaprogramming instead of fragile compiler defines. |
| |
| #ifndef CERES_INTERNAL_INTEGRAL_TYPES_H_ |
| #define CERES_INTERNAL_INTEGRAL_TYPES_H_ |
| |
| namespace ceres { |
| namespace internal { |
| |
| // Compile time ternary on types. |
| template<bool kCondition, typename kTrueType, typename kFalseType> |
| struct Ternary { |
| typedef kTrueType type; |
| }; |
| template<typename kTrueType, typename kFalseType> |
| struct Ternary<false, kTrueType, kFalseType> { |
| typedef kFalseType type; |
| }; |
| |
| #define CERES_INTSIZE(TYPE) \ |
| typename Ternary<sizeof(TYPE) * 8 == kBits, TYPE, |
| |
| template<int kBits> |
| struct Integer { |
| typedef |
| CERES_INTSIZE(char) |
| CERES_INTSIZE(short) |
| CERES_INTSIZE(int) |
| CERES_INTSIZE(long int) |
| CERES_INTSIZE(long long) |
| void>::type >::type >::type >::type >::type |
| type; |
| }; |
| |
| template<int kBits> |
| struct UnsignedInteger { |
| typedef |
| CERES_INTSIZE(unsigned char) |
| CERES_INTSIZE(unsigned short) |
| CERES_INTSIZE(unsigned int) |
| CERES_INTSIZE(unsigned long int) |
| CERES_INTSIZE(unsigned long long) |
| void>::type >::type >::type >::type >::type |
| type; |
| }; |
| |
| #undef CERES_INTSIZE |
| |
| typedef Integer< 8>::type int8; |
| typedef Integer<32>::type int32; |
| typedef Integer<64>::type int64; |
| |
| typedef UnsignedInteger< 8>::type uint8; |
| typedef UnsignedInteger<16>::type uint16; |
| typedef UnsignedInteger<32>::type uint32; |
| typedef UnsignedInteger<64>::type uint64; |
| |
| } // namespace internal |
| } // namespace ceres |
| |
| #endif // CERES_INTERNAL_INTEGRAL_TYPES_H_ |