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Enable std::result_of for msvc 2015 and later

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Gael Guennebaud 2018-09-13 09:44:46 +02:00
parent 3adece4827
commit 5927eef612
1 changed files with 4 additions and 1 deletions
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5
Eigen/src/Core/util/Macros.h
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@ -533,8 +533,11 @@
#endif
// Does the compiler support result_of?
// It's likely that MSVC 2013 supports result_of but I couldn't not find a good source for that,
// so let's be conservative.
#ifndef EIGEN_HAS_STD_RESULT_OF
#if EIGEN_MAX_CPP_VER>=11 && ((__has_feature(cxx_lambdas) || (defined(__cplusplus) && __cplusplus >= 201103L)))
#if EIGEN_MAX_CPP_VER>=11 && \
(__has_feature(cxx_lambdas) || (defined(__cplusplus) && __cplusplus >= 201103L) || EIGEN_COMP_MSVC >= 1900)
#define EIGEN_HAS_STD_RESULT_OF 1
#else
#define EIGEN_HAS_STD_RESULT_OF 0