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* remove Cross product expression: MatrixBase::cross() now returns a temporary

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which is even better optimized by the compiler.
* Quaternion no longer inherits MatrixBase. Instead it stores the coefficients
  using a Matrix<> and provides only relevant methods.
This commit is contained in:
Gael Guennebaud
2008-06-07 13:18:29 +00:00
parent 6998037930
commit eb7b7b2cfc
5 changed files with 113 additions and 186 deletions
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12
Eigen/src/Core/Redux.h
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@@ -27,7 +27,7 @@
#define EIGEN_REDUX_H
template<typename BinaryOp, typename Derived, int Start, int Length>
struct ei_redux_unroller
struct ei_redux_impl
{
enum {
HalfLength = Length/2
@@ -38,13 +38,13 @@ struct ei_redux_unroller
static Scalar run(const Derived &mat, const BinaryOp& func)
{
return func(
ei_redux_unroller<BinaryOp, Derived, Start, HalfLength>::run(mat, func),
ei_redux_unroller<BinaryOp, Derived, Start+HalfLength, Length - HalfLength>::run(mat, func));
ei_redux_impl<BinaryOp, Derived, Start, HalfLength>::run(mat, func),
ei_redux_impl<BinaryOp, Derived, Start+HalfLength, Length - HalfLength>::run(mat, func));
}
};
template<typename BinaryOp, typename Derived, int Start>
struct ei_redux_unroller<BinaryOp, Derived, Start, 1>
struct ei_redux_impl<BinaryOp, Derived, Start, 1>
{
enum {
col = Start / Derived::RowsAtCompileTime,
@@ -60,7 +60,7 @@ struct ei_redux_unroller<BinaryOp, Derived, Start, 1>
};
template<typename BinaryOp, typename Derived, int Start>
struct ei_redux_unroller<BinaryOp, Derived, Start, Dynamic>
struct ei_redux_impl<BinaryOp, Derived, Start, Dynamic>
{
typedef typename ei_result_of<BinaryOp(typename Derived::Scalar)>::type Scalar;
static Scalar run(const Derived& mat, const BinaryOp& func)
@@ -91,7 +91,7 @@ MatrixBase<Derived>::redux(const BinaryOp& func) const
const bool unroll = SizeAtCompileTime * CoeffReadCost
+ (SizeAtCompileTime-1) * ei_functor_traits<BinaryOp>::Cost
<= EIGEN_UNROLLING_LIMIT;
return ei_redux_unroller<BinaryOp, Derived, 0,
return ei_redux_impl<BinaryOp, Derived, 0,
unroll ? int(SizeAtCompileTime) : Dynamic>
::run(derived(), func);
}