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Enable construction of Ref<VectorType> from a runtime vector.

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This commit is contained in:
Gael Guennebaud 2019-03-03 15:25:25 +01:00
parent 9ba81cf0ff
commit b0d406d91c
2 changed files with 11 additions and 6 deletions
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5
Eigen/src/Core/Ref.h
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@ -28,12 +28,13 @@ struct traits<Ref<_PlainObjectType, _Options, _StrideType> >
template<typename Derived> struct match {
enum {
IsVectorAtCompileTime = PlainObjectType::IsVectorAtCompileTime || Derived::IsVectorAtCompileTime,
HasDirectAccess = internal::has_direct_access<Derived>::ret,
StorageOrderMatch = PlainObjectType::IsVectorAtCompileTime || Derived::IsVectorAtCompileTime || ((PlainObjectType::Flags&RowMajorBit)==(Derived::Flags&RowMajorBit)),
StorageOrderMatch = IsVectorAtCompileTime || ((PlainObjectType::Flags&RowMajorBit)==(Derived::Flags&RowMajorBit)),
InnerStrideMatch = int(StrideType::InnerStrideAtCompileTime)==int(Dynamic)
|| int(StrideType::InnerStrideAtCompileTime)==int(Derived::InnerStrideAtCompileTime)
|| (int(StrideType::InnerStrideAtCompileTime)==0 && int(Derived::InnerStrideAtCompileTime)==1),
OuterStrideMatch = Derived::IsVectorAtCompileTime
OuterStrideMatch = IsVectorAtCompileTime
|| int(StrideType::OuterStrideAtCompileTime)==int(Dynamic) || int(StrideType::OuterStrideAtCompileTime)==int(Derived::OuterStrideAtCompileTime),
// NOTE, this indirection of evaluator<Derived>::Alignment is needed
// to workaround a very strange bug in MSVC related to the instantiation

12
test/ref.cpp
View File

@ -102,10 +102,14 @@ template<typename VectorType> void ref_vector(const VectorType& m)
Index i = internal::random<Index>(0,size-1);
Index bsize = internal::random<Index>(1,size-i);
RefMat rm0 = v1;
VERIFY_IS_EQUAL(rm0, v1);
RefDynMat rv1 = v1;
VERIFY_IS_EQUAL(rv1, v1);
{ RefMat rm0 = v1; VERIFY_IS_EQUAL(rm0, v1); }
{ RefMat rm0 = v1.block(0,0,size,1); VERIFY_IS_EQUAL(rm0, v1); }
{ RefDynMat rv1 = v1; VERIFY_IS_EQUAL(rv1, v1); }
{ RefDynMat rv1 = v1.block(0,0,size,1); VERIFY_IS_EQUAL(rv1, v1); }
{ VERIFY_RAISES_ASSERT( RefMat rm0 = v1.block(0, 0, size, 0); EIGEN_UNUSED_VARIABLE(rm0); ); }
if(VectorType::SizeAtCompileTime!=1)
{ VERIFY_RAISES_ASSERT( RefDynMat rv1 = v1.block(0, 0, size, 0); EIGEN_UNUSED_VARIABLE(rv1); ); }
RefDynMat rv2 = v1.segment(i,bsize);
VERIFY_IS_EQUAL(rv2, v1.segment(i,bsize));
rv2.setOnes();