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fix very annoying warning (gcc 4.3): type qualifiers ignored on function return type

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This commit is contained in:
Gael Guennebaud
2010-06-25 13:20:34 +02:00
parent 01553c419e
commit 75b6d2b2f8
3 changed files with 29 additions and 2 deletions
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20
Eigen/src/Core/util/Meta.h
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@@ -64,6 +64,21 @@ template<typename T> struct ei_cleantype<T&> { typedef typename ei_cleant
template<typename T> struct ei_cleantype<const T*> { typedef typename ei_cleantype<T>::type type; };
template<typename T> struct ei_cleantype<T*> { typedef typename ei_cleantype<T>::type type; };
template<typename T> struct ei_is_arithmetic { enum { ret = false }; };
template<> struct ei_is_arithmetic<float> { enum { ret = true }; };
template<> struct ei_is_arithmetic<double> { enum { ret = true }; };
template<> struct ei_is_arithmetic<long double> { enum { ret = true }; };
template<> struct ei_is_arithmetic<bool> { enum { ret = true }; };
template<> struct ei_is_arithmetic<char> { enum { ret = true }; };
template<> struct ei_is_arithmetic<signed char> { enum { ret = true }; };
template<> struct ei_is_arithmetic<unsigned char> { enum { ret = true }; };
template<> struct ei_is_arithmetic<signed short> { enum { ret = true }; };
template<> struct ei_is_arithmetic<unsigned short>{ enum { ret = true }; };
template<> struct ei_is_arithmetic<signed int> { enum { ret = true }; };
template<> struct ei_is_arithmetic<unsigned int> { enum { ret = true }; };
template<> struct ei_is_arithmetic<signed long> { enum { ret = true }; };
template<> struct ei_is_arithmetic<unsigned long> { enum { ret = true }; };
template<typename T> struct ei_makeconst { typedef const T type; };
template<typename T> struct ei_makeconst<const T> { typedef const T type; };
template<typename T> struct ei_makeconst<T&> { typedef const T& type; };
@@ -71,6 +86,11 @@ template<typename T> struct ei_makeconst<const T&> { typedef const T& type; };
template<typename T> struct ei_makeconst<T*> { typedef const T* type; };
template<typename T> struct ei_makeconst<const T*> { typedef const T* type; };
template<typename T> struct ei_makeconst_return_type
{
typedef typename ei_meta_if<ei_is_arithmetic<T>::ret, T, typename ei_makeconst<T>::type>::ret type;
};
/** \internal Allows to enable/disable an overload
* according to a compile time condition.
*/