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Even ReturnByValue should not evaluate when assembling the expression

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Gael Guennebaud 2014-03-11 11:42:07 +01:00
parent da6ec81282
commit 2bf63c6b4a
1 changed files with 8 additions and 0 deletions
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8
Eigen/src/Core/ReturnByValue.h
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@ -33,6 +33,7 @@ struct traits<ReturnByValue<Derived> >
}; };
}; };
#ifndef EIGEN_TEST_EVALUATORS
/* The ReturnByValue object doesn't even have a coeff() method. /* The ReturnByValue object doesn't even have a coeff() method.
* So the only way that nesting it in an expression can work, is by evaluating it into a plain matrix. * So the only way that nesting it in an expression can work, is by evaluating it into a plain matrix.
* So internal::nested always gives the plain return matrix type. * So internal::nested always gives the plain return matrix type.
@ -44,6 +45,13 @@ struct nested<ReturnByValue<Derived>, n, PlainObject>
{ {
typedef typename traits<Derived>::ReturnType type; typedef typename traits<Derived>::ReturnType type;
}; };
#else
template<typename Derived,int n,typename PlainObject>
struct nested_eval<ReturnByValue<Derived>, n, PlainObject>
{
typedef typename traits<Derived>::ReturnType type;
};
#endif
} // end namespace internal } // end namespace internal