GitHub-Proxy/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2025-08-11 11:19:02 +08:00
Code Issues Packages Projects Releases Wiki Activity

Implement evaluator for CwiseUnaryView

Browse Source
This commit is contained in:
Jitse Niesen 2011-04-05 18:20:43 +01:00
parent cca7b146a2
commit 11ea81858a
2 changed files with 53 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
Eigen/src/Core/CoreEvaluators.h
View File

@ -259,7 +259,7 @@ struct evaluator_impl<CwiseUnaryOp<UnaryOp, ArgType> >
}
protected:
const UnaryOpType& m_unaryOp;
const UnaryOpType m_unaryOp;
typename evaluator<ArgType>::type m_argImpl;
};
@ -304,6 +304,47 @@ protected:
typename evaluator<Rhs>::type m_rhsImpl;
};
// -------------------- CwiseUnaryView --------------------
template<typename UnaryOp, typename ArgType>
struct evaluator_impl<CwiseUnaryView<UnaryOp, ArgType> >
{
typedef CwiseUnaryView<UnaryOp, ArgType> CwiseUnaryViewType;
evaluator_impl(const CwiseUnaryViewType& op)
: m_unaryOp(op.functor()),
m_argImpl(op.nestedExpression())
{ }
typedef typename CwiseUnaryViewType::Index Index;
typedef typename CwiseUnaryViewType::Scalar Scalar;
typedef typename CwiseUnaryViewType::CoeffReturnType CoeffReturnType;
CoeffReturnType coeff(Index row, Index col) const
{
return m_unaryOp(m_argImpl.coeff(row, col));
}
CoeffReturnType coeff(Index index) const
{
return m_unaryOp(m_argImpl.coeff(index));
}
Scalar& coeffRef(Index row, Index col)
{
return m_unaryOp(m_argImpl.coeffRef(row, col));
}
Scalar& coeffRef(Index index)
{
return m_unaryOp(m_argImpl.coeffRef(index));
}
protected:
const UnaryOp& m_unaryOp;
typename evaluator<ArgType>::type m_argImpl;
};
// -------------------- Product --------------------
template<typename Lhs, typename Rhs>

12
test/evaluators.cpp
View File

@ -143,7 +143,7 @@ void test_evaluators()
mXref.block(4, 4, 9, 12) = mXsrc;
VERIFY_IS_APPROX(mX, mXref);
// Testing Map
// test Map
const float raw[3] = {1,2,3};
float buffer[3] = {0,0,0};
Vector3f v3;
@ -154,4 +154,14 @@ void test_evaluators()
VERIFY(buffer[0] == 2);
VERIFY(buffer[1] == 4);
VERIFY(buffer[2] == 6);
// test CwiseUnaryView
mat1.setRandom();
mat2.setIdentity();
MatrixXcd matXcd(6,6), matXcd_ref(6,6);
copy_using_evaluator(matXcd.real(), mat1);
copy_using_evaluator(matXcd.imag(), mat2);
matXcd_ref.real() = mat1;
matXcd_ref.imag() = mat2;
VERIFY_IS_APPROX(matXcd, matXcd_ref);
}