devtools/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2026-04-10 11:34:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

add boolean || and && operators

Browse Source
This commit is contained in:
Gael Guennebaud
2011-05-31 22:17:34 +02:00
parent b495203310
commit 35c1158ee3
5 changed files with 78 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
Eigen/src/Core/Functors.h
View File

@@ -220,6 +220,38 @@ struct functor_traits<scalar_quotient_op<Scalar> > {
};
};
/** \internal
* \brief Template functor to compute the and of two booleans
*
* \sa class CwiseBinaryOp, ArrayBase::operator&&
*/
struct scalar_boolean_and_op {
EIGEN_EMPTY_STRUCT_CTOR(scalar_boolean_and_op)
EIGEN_STRONG_INLINE bool operator() (const bool& a, const bool& b) const { return a && b; }
};
template<> struct functor_traits<scalar_boolean_and_op> {
enum {
Cost = NumTraits<bool>::AddCost,
PacketAccess = false
};
};
/** \internal
* \brief Template functor to compute the or of two booleans
*
* \sa class CwiseBinaryOp, ArrayBase::operator||
*/
struct scalar_boolean_or_op {
EIGEN_EMPTY_STRUCT_CTOR(scalar_boolean_or_op)
EIGEN_STRONG_INLINE bool operator() (const bool& a, const bool& b) const { return a || b; }
};
template<> struct functor_traits<scalar_boolean_or_op> {
enum {
Cost = NumTraits<bool>::AddCost,
PacketAccess = false
};
};
// unary functors:
/** \internal

36
Eigen/src/plugins/ArrayCwiseBinaryOps.h
View File

@@ -141,3 +141,39 @@ operator-(const Scalar& scalar,const EIGEN_CURRENT_STORAGE_BASE_CLASS<Derived>&
{
return (-other) + scalar;
}
/** \returns an expression of the coefficient-wise && operator of *this and \a other
*
* \warning this operator is for expression of bool only.
*
* Example: \include Cwise_boolean_and.cpp
* Output: \verbinclude Cwise_boolean_and.out
*
* \sa operator||, select()
*/
template<typename OtherDerived>
inline const CwiseBinaryOp<internal::scalar_boolean_and_op, const Derived, const OtherDerived>
operator&&(const EIGEN_CURRENT_STORAGE_BASE_CLASS<OtherDerived> &other) const
{
EIGEN_STATIC_ASSERT((internal::is_same<bool,Scalar>::value && internal::is_same<bool,typename OtherDerived::Scalar>::value),
THIS_METHOD_IS_ONLY_FOR_EXPRESSIONS_OF_BOOL);
return CwiseBinaryOp<internal::scalar_boolean_and_op, const Derived, const OtherDerived>(derived(),other.derived());
}
/** \returns an expression of the coefficient-wise || operator of *this and \a other
*
* \warning this operator is for expression of bool only.
*
* Example: \include Cwise_boolean_or.cpp
* Output: \verbinclude Cwise_boolean_or.out
*
* \sa operator&&, select()
*/
template<typename OtherDerived>
inline const CwiseBinaryOp<internal::scalar_boolean_or_op, const Derived, const OtherDerived>
operator||(const EIGEN_CURRENT_STORAGE_BASE_CLASS<OtherDerived> &other) const
{
EIGEN_STATIC_ASSERT((internal::is_same<bool,Scalar>::value && internal::is_same<bool,typename OtherDerived::Scalar>::value),
THIS_METHOD_IS_ONLY_FOR_EXPRESSIONS_OF_BOOL);
return CwiseBinaryOp<internal::scalar_boolean_or_op, const Derived, const OtherDerived>(derived(),other.derived());
}