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Fix regression introduced by 3117036b80

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Matrix<Scalar,1,1>(int) did not compile if Scalar is not constructible from int. Now this falls back to the (Index size) constructor.
This commit is contained in:
Christoph Hertzberg
2014-07-04 12:52:55 +02:00
parent 3a9f9faada
commit f365380496
2 changed files with 21 additions and 2 deletions
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19
Eigen/src/Core/util/Meta.h
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@@ -80,6 +80,25 @@ template<typename T> struct add_const_on_value_type<T*> { typedef T const
template<typename T> struct add_const_on_value_type<T* const> { typedef T const* const type; };
template<typename T> struct add_const_on_value_type<T const* const> { typedef T const* const type; };
template<typename From, typename To>
struct is_convertible
{
private:
struct yes {int a[1];};
struct no {int a[2];};
template<typename T>
static yes test (const T&) {}
template<typename> static no test (...) {}
public:
static From ms_from;
enum { value = sizeof(test<To>(ms_from))==sizeof(yes) };
};
/** \internal Allows to enable/disable an overload
* according to a compile time condition.
*/