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Evaluator: introduce the main Assignment class, add call_assignment to bypass NoAlias and AssumeAliasing, and some bits of cleaning

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Gael Guennebaud
2013-11-25 15:20:31 +01:00
parent c550a0e634
commit 230f5c3aa9
5 changed files with 226 additions and 179 deletions
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76
test/evaluators.cpp
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@@ -1,7 +1,81 @@
#ifndef EIGEN_ENABLE_EVALUATORS
#define EIGEN_ENABLE_EVALUATORS
#endif
#include "main.h"
using internal::copy_using_evaluator;
namespace Eigen {
template<typename DstXprType, typename SrcXprType>
EIGEN_STRONG_INLINE
DstXprType& copy_using_evaluator(const EigenBase<DstXprType> &dst, const SrcXprType &src)
{
call_assignment(dst.const_cast_derived(), src.derived(), internal::assign_op<typename DstXprType::Scalar>());
return dst.const_cast_derived();
}
template<typename DstXprType, template <typename> class StorageBase, typename SrcXprType>
EIGEN_STRONG_INLINE
const DstXprType& copy_using_evaluator(const NoAlias<DstXprType, StorageBase>& dst, const SrcXprType &src)
{
call_assignment(dst, src.derived(), internal::assign_op<typename DstXprType::Scalar>());
return dst.expression();
}
template<typename DstXprType, typename SrcXprType>
EIGEN_STRONG_INLINE
DstXprType& copy_using_evaluator(const PlainObjectBase<DstXprType> &dst, const SrcXprType &src)
{
#ifdef EIGEN_NO_AUTOMATIC_RESIZING
eigen_assert((dst.size()==0 || (IsVectorAtCompileTime ? (dst.size() == src.size())
: (dst.rows() == src.rows() && dst.cols() == src.cols())))
&& "Size mismatch. Automatic resizing is disabled because EIGEN_NO_AUTOMATIC_RESIZING is defined");
#else
dst.const_cast_derived().resizeLike(src.derived());
#endif
call_assignment(dst.const_cast_derived(), src.derived(), internal::assign_op<typename DstXprType::Scalar>());
return dst.const_cast_derived();
}
template<typename DstXprType, typename SrcXprType>
void add_assign_using_evaluator(const DstXprType& dst, const SrcXprType& src)
{
typedef typename DstXprType::Scalar Scalar;
call_assignment(dst.const_cast_derived(), src.derived(), internal::add_assign_op<Scalar>());
}
template<typename DstXprType, typename SrcXprType>
void subtract_assign_using_evaluator(const DstXprType& dst, const SrcXprType& src)
{
typedef typename DstXprType::Scalar Scalar;
call_assignment(dst.const_cast_derived(), src.derived(), internal::sub_assign_op<Scalar>());
}
template<typename DstXprType, typename SrcXprType>
void multiply_assign_using_evaluator(const DstXprType& dst, const SrcXprType& src)
{
typedef typename DstXprType::Scalar Scalar;
call_assignment(dst.const_cast_derived(), src.derived(), internal::mul_assign_op<Scalar>());
}
template<typename DstXprType, typename SrcXprType>
void divide_assign_using_evaluator(const DstXprType& dst, const SrcXprType& src)
{
typedef typename DstXprType::Scalar Scalar;
call_assignment(dst.const_cast_derived(), src.derived(), internal::div_assign_op<Scalar>());
}
template<typename DstXprType, typename SrcXprType>
void swap_using_evaluator(const DstXprType& dst, const SrcXprType& src)
{
call_dense_swap_loop(dst.const_cast_derived(), src.const_cast_derived());
}
}
using namespace std;
#define VERIFY_IS_APPROX_EVALUATOR(DEST,EXPR) VERIFY_IS_APPROX(copy_using_evaluator(DEST,(EXPR)), (EXPR).eval());