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* added a pseudo expression Array giving access to:

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- matrix-scalar addition/subtraction operators, e.g.:
       m.array() += 0.5;
   - matrix/matrix comparison operators, e.g.:
      if (m1.array() < m2.array()) {}
* fix compilation issues with Transform and gcc < 4.1
This commit is contained in:
Gael Guennebaud
2008-06-20 12:38:03 +00:00
parent e735692e37
commit 54238961d6
8 changed files with 255 additions and 57 deletions
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42
Eigen/src/Array/Functors.h
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@@ -25,10 +25,38 @@
#ifndef EIGEN_ARRAY_FUNCTORS_H
#define EIGEN_ARRAY_FUNCTORS_H
/** \internal
* \array_module
*
* \brief Template functor to add a scalar to a fixed other one
*
* \sa class CwiseUnaryOp, Array::operator+
*/
template<typename Scalar, bool PacketAccess = (int(ei_packet_traits<Scalar>::size)>1?true:false) > struct ei_scalar_add_op;
template<typename Scalar>
struct ei_scalar_add_op<Scalar,true> {
typedef typename ei_packet_traits<Scalar>::type PacketScalar;
inline ei_scalar_add_op(const Scalar& other) : m_other(ei_pset1(other)) { }
inline Scalar operator() (const Scalar& a) const { return a + ei_pfirst(m_other); }
inline const PacketScalar packetOp(const PacketScalar& a) const
{ return ei_padd(a, m_other); }
const PacketScalar m_other;
};
template<typename Scalar>
struct ei_scalar_add_op<Scalar,false> {
inline ei_scalar_add_op(const Scalar& other) : m_other(other) { }
inline Scalar operator() (const Scalar& a) const { return a + m_other; }
const Scalar m_other;
};
template<typename Scalar>
struct ei_functor_traits<ei_scalar_add_op<Scalar> >
{ enum { Cost = NumTraits<Scalar>::AddCost, PacketAccess = ei_packet_traits<Scalar>::size>1 }; };
/** \internal
*
* \array_module
*
*
* \brief Template functor to compute the square root of a scalar
*
* \sa class CwiseUnaryOp, MatrixBase::cwiseSqrt()
@@ -43,7 +71,7 @@ struct ei_functor_traits<ei_scalar_sqrt_op<Scalar> >
/** \internal
*
* \array_module
*
*
* \brief Template functor to compute the exponential of a scalar
*
* \sa class CwiseUnaryOp, MatrixBase::cwiseExp()
@@ -58,7 +86,7 @@ struct ei_functor_traits<ei_scalar_exp_op<Scalar> >
/** \internal
*
* \array_module
*
*
* \brief Template functor to compute the logarithm of a scalar
*
* \sa class CwiseUnaryOp, MatrixBase::cwiseLog()
@@ -73,7 +101,7 @@ struct ei_functor_traits<ei_scalar_log_op<Scalar> >
/** \internal
*
* \array_module
*
*
* \brief Template functor to compute the cosine of a scalar
*
* \sa class CwiseUnaryOp, MatrixBase::cwiseCos()
@@ -88,7 +116,7 @@ struct ei_functor_traits<ei_scalar_cos_op<Scalar> >
/** \internal
*
* \array_module
*
*
* \brief Template functor to compute the sine of a scalar
*
* \sa class CwiseUnaryOp, MatrixBase::cwiseSin()
@@ -103,7 +131,7 @@ struct ei_functor_traits<ei_scalar_sin_op<Scalar> >
/** \internal
*
* \array_module
*
*
* \brief Template functor to raise a scalar to a power
*
* \sa class CwiseUnaryOp, MatrixBase::cwisePow
@@ -121,7 +149,7 @@ struct ei_functor_traits<ei_scalar_pow_op<Scalar> >
/** \internal
*
* \array_module
*
*
* \brief Template functor to compute the reciprocal of a scalar
*
* \sa class CwiseUnaryOp, MatrixBase::cwiseInverse