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std::integral_constant is not C++03 compatible

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This commit is contained in:
Christoph Hertzberg 2017-09-14 19:23:38 +02:00
parent 1b7294f6fc
commit 0c9ad2f525
1 changed files with 4 additions and 2 deletions
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6
Eigen/src/Core/util/XprHelper.h
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@ -36,14 +36,16 @@ inline IndexDest convert_index(const IndexSrc& idx) {
// true if T can be considered as an integral index (i.e., and integral type or enum) // true if T can be considered as an integral index (i.e., and integral type or enum)
template<typename T> struct is_valid_index_type template<typename T> struct is_valid_index_type
: std::integral_constant<bool, {
enum { value =
#if EIGEN_HAS_TYPE_TRAITS #if EIGEN_HAS_TYPE_TRAITS
internal::is_integral<T>::value || std::is_enum<T>::value internal::is_integral<T>::value || std::is_enum<T>::value
#else #else
// without C++11, we use is_convertible to Index instead of is_integral in order to treat enums as Index. // without C++11, we use is_convertible to Index instead of is_integral in order to treat enums as Index.
internal::is_convertible<T,Index>::value internal::is_convertible<T,Index>::value
#endif #endif
> {}; };
};
// promote_scalar_arg is an helper used in operation between an expression and a scalar, like: // promote_scalar_arg is an helper used in operation between an expression and a scalar, like:
// expression * scalar // expression * scalar