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Fix duplicate definitions on Mac

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Dan Miller 2021-07-01 14:54:12 +00:00 committed by Antonio Sánchez
parent 91e99ec1e0
commit eb04775903
1 changed files with 6 additions and 8 deletions
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14
Eigen/src/Core/util/Meta.h
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@ -189,19 +189,17 @@ template<> struct make_unsigned<signed int> { typedef unsigned int type; }
template<> struct make_unsigned<unsigned int> { typedef unsigned int type; };
template<> struct make_unsigned<signed long> { typedef unsigned long type; };
template<> struct make_unsigned<unsigned long> { typedef unsigned long type; };
template<> struct make_unsigned<signed long long> { typedef unsigned long long type; };
template<> struct make_unsigned<unsigned long long> { typedef unsigned long long type; };
#if EIGEN_COMP_MSVC
template<> struct make_unsigned<signed __int64> { typedef unsigned __int64 type; };
template<> struct make_unsigned<unsigned __int64> { typedef unsigned __int64 type; };
#endif
// Some platforms define int64_t as long long even for C++03. In this case we
// are missing the definition for make_unsigned. If we just define it, we get
// duplicated definitions for platforms defining int64_t as signed long for
// C++03. We therefore add the specialization for C++03 long long for these
// platforms only.
#if EIGEN_OS_MAC
// Some platforms define int64_t as `long long` even for C++03, where
// `long long` is not guaranteed by the standard. In this case we are missing
// the definition for make_unsigned. If we just define it, we run into issues
// where `long long` doesn't exist in some compilers for C++03. We therefore add
// the specialization for these platforms only.
#if EIGEN_OS_MAC || EIGEN_COMP_MINGW
template<> struct make_unsigned<unsigned long long> { typedef unsigned long long type; };
template<> struct make_unsigned<long long> { typedef unsigned long long type; };
#endif