|  | // Ceres Solver - A fast non-linear least squares minimizer | 
|  | // Copyright 2022 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) | 
|  |  | 
|  | #ifndef CERES_PUBLIC_INTERNAL_PORT_H_ | 
|  | #define CERES_PUBLIC_INTERNAL_PORT_H_ | 
|  |  | 
|  | // A macro to mark a function/variable/class as deprecated. | 
|  | // We use compiler specific attributes rather than the c++ | 
|  | // attribute because they do not mix well with each other. | 
|  | #if defined(_MSC_VER) | 
|  | #define CERES_DEPRECATED_WITH_MSG(message) __declspec(deprecated(message)) | 
|  | #elif defined(__GNUC__) | 
|  | #define CERES_DEPRECATED_WITH_MSG(message) __attribute__((deprecated(message))) | 
|  | #else | 
|  | // In the worst case fall back to c++ attribute. | 
|  | #define CERES_DEPRECATED_WITH_MSG(message) [[deprecated(message)]] | 
|  | #endif | 
|  |  | 
|  | #ifndef CERES_GET_FLAG | 
|  | #define CERES_GET_FLAG(X) X | 
|  | #endif | 
|  |  | 
|  | // Indicates whether C++20 is currently active | 
|  | #ifndef CERES_HAS_CPP20 | 
|  | #if __cplusplus >= 202002L || (defined(_MSVC_LANG) && _MSVC_LANG >= 202002L) | 
|  | #define CERES_HAS_CPP20 | 
|  | #endif  // __cplusplus >= 202002L || (defined(_MSVC_LANG) && _MSVC_LANG >= | 
|  | // 202002L) | 
|  | #endif  // !defined(CERES_HAS_CPP20) | 
|  |  | 
|  | // Prevents symbols from being substituted by the corresponding macro definition | 
|  | // under the same name. For instance, min and max are defined as macros on | 
|  | // Windows (unless NOMINMAX is defined) which causes compilation errors when | 
|  | // defining or referencing symbols under the same name. | 
|  | // | 
|  | // To be robust in all cases particularly when NOMINMAX cannot be used, use this | 
|  | // macro to annotate min/max declarations/definitions. Examples: | 
|  | // | 
|  | //   int max CERES_PREVENT_MACRO_SUBSTITUTION(); | 
|  | //   min CERES_PREVENT_MACRO_SUBSTITUTION(a, b); | 
|  | //   max CERES_PREVENT_MACRO_SUBSTITUTION(a, b); | 
|  | // | 
|  | // NOTE: In case the symbols for which the substitution must be prevented are | 
|  | // used within another macro, the substitution must be inhibited using parens as | 
|  | // | 
|  | //   (std::numerical_limits<double>::max)() | 
|  | // | 
|  | // since the helper macro will not work here. Do not use this technique in | 
|  | // general case, because it will prevent argument-dependent lookup (ADL). | 
|  | // | 
|  | #define CERES_PREVENT_MACRO_SUBSTITUTION  // Yes, it's empty | 
|  |  | 
|  | #endif  // CERES_PUBLIC_INTERNAL_PORT_H_ |