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Adds macro for checking if C++14 variable templates are supported

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Steve Bronder 2021-05-21 16:25:32 +00:00 committed by Rasmus Munk Larsen
parent 391094c507
commit 1720057023
2 changed files with 14 additions and 6 deletions
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2
Eigen/src/Core/util/IntegralConstant.h
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@ -184,7 +184,7 @@ template<int N, int DynamicKey> struct cleanup_index_type<std::integral_constant
#ifndef EIGEN_PARSED_BY_DOXYGEN
#if EIGEN_HAS_CXX14
#if EIGEN_HAS_CXX14_VARIABLE_TEMPLATES
template<int N>
static const internal::FixedInt<N> fix{};
#else

18
Eigen/src/Core/util/Macros.h
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@ -162,8 +162,8 @@
/// \internal EIGEN_COMP_IBM set to xlc version if the compiler is IBM XL C++
// XLC version
// 3.1 0x0301
// 4.5 0x0405
// 3.1 0x0301
// 4.5 0x0405
// 5.0 0x0500
// 12.1 0x0C01
#if defined(__IBMCPP__) || defined(__xlc__) || defined(__ibmxl__)
@ -637,6 +637,14 @@
#define EIGEN_COMP_CXXVER 03
#endif
#ifndef EIGEN_HAS_CXX14_VARIABLE_TEMPLATES
#if defined(__cpp_variable_templates) && __cpp_variable_templates >= 201304 && EIGEN_MAX_CPP_VER>=14
#define EIGEN_HAS_CXX14_VARIABLE_TEMPLATES 1
#else
#define EIGEN_HAS_CXX14_VARIABLE_TEMPLATES 0
#endif
#endif
// The macros EIGEN_HAS_CXX?? defines a rough estimate of available c++ features
// but in practice we should not rely on them but rather on the availabilty of
@ -833,7 +841,7 @@
#endif
#endif
// NOTE: the required Apple's clang version is very conservative
// NOTE: the required Apple's clang version is very conservative
// and it could be that XCode 9 works just fine.
// NOTE: the MSVC version is based on https://en.cppreference.com/w/cpp/compiler_support
// and not tested.
@ -962,7 +970,7 @@
#endif
#define EIGEN_DEVICE_FUNC __attribute__((flatten)) __attribute__((always_inline))
// All functions callable from CUDA/HIP code must be qualified with __device__
#elif defined(EIGEN_GPUCC)
#elif defined(EIGEN_GPUCC)
#define EIGEN_DEVICE_FUNC __host__ __device__
#else
#define EIGEN_DEVICE_FUNC
@ -989,7 +997,7 @@
#else
#define eigen_plain_assert(x)
#endif
#else
#else
#if EIGEN_SAFE_TO_USE_STANDARD_ASSERT_MACRO
namespace Eigen {
namespace internal {