mirror/eigen
2
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2025-02-17 18:09:55 +08:00
Code Issues Packages Projects Releases Wiki Activity

Even ReturnByValue should not evaluate when assembling the expression

Browse Source
This commit is contained in:
Gael Guennebaud 2014-03-11 11:42:07 +01:00
parent da6ec81282
commit 2bf63c6b4a
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
Eigen/src/Core/ReturnByValue.h
View File

@ -33,6 +33,7 @@ struct traits<ReturnByValue<Derived> >
};
};
#ifndef EIGEN_TEST_EVALUATORS
/* 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 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;
};
#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