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* support for matrix-scalar quotient with integer scalar types.

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* added cache efficient matrix-matrix product.
   - provides a huge speed-up for large matrices.
   - currently it is enabled when an explicit unrolling is not possible.
This commit is contained in:
Gael Guennebaud
2008-03-21 20:26:14 +00:00
parent 0ef1efdbdb
commit 4342f024d9
7 changed files with 116 additions and 22 deletions
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26
Eigen/src/Core/Util.h
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@@ -122,6 +122,8 @@ enum CornerType { TopLeft, TopRight, BottomLeft, BottomRight };
enum DirectionType { Vertical, Horizontal };
enum ProductEvaluationMode { UnrolledDotProduct, CacheOptimal };
// just a workaround because GCC seems to not really like empty structs
#ifdef __GNUG__
struct ei_empty_struct{char _ei_dummy_;};
@@ -156,20 +158,28 @@ template<> class ei_int_if_dynamic<Dynamic>
void setValue(int value) { m_value = value; }
};
struct ei_has_nothing {int a[1];};
struct ei_has_std_result_type {int a[2];};
struct ei_has_tr1_result {int a[3];};
template <bool Condition, class Then, class Else>
struct ei_meta_if { typedef Then ret; };
template <class Then, class Else>
struct ei_meta_if <false, Then, Else> { typedef Else ret; };
/** \internal
* Convenient struct to get the result type of a unary or binary functor.
*
* It supports both the current STL mechanism (using the result_type member) as well as
* upcoming next STL generation (using a templated result member).
* If none of these member is provided, then the type of the first argument is returned.
* If none of these members is provided, then the type of the first argument is returned.
*/
template<typename T> struct ei_result_of {};
template<typename Func, typename ArgType, int SizeOf=sizeof(ei_has_nothing)>
struct ei_has_none {int a[1];};
struct ei_has_std_result_type {int a[2];};
struct ei_has_tr1_result {int a[3];};
template<typename Func, typename ArgType, int SizeOf=sizeof(ei_has_none)>
struct ei_unary_result_of_select {typedef ArgType type;};
template<typename Func, typename ArgType>
@@ -184,12 +194,12 @@ struct ei_result_of<Func(ArgType)> {
static ei_has_std_result_type testFunctor(T const *, typename T::result_type const * = 0);
template<typename T>
static ei_has_tr1_result testFunctor(T const *, typename T::template result<T(ArgType)>::type const * = 0);
static ei_has_nothing testFunctor(...);
static ei_has_none testFunctor(...);
typedef typename ei_unary_result_of_select<Func, ArgType, sizeof(testFunctor(static_cast<Func*>(0)))>::type type;
};
template<typename Func, typename ArgType0, typename ArgType1, int SizeOf=sizeof(ei_has_nothing)>
template<typename Func, typename ArgType0, typename ArgType1, int SizeOf=sizeof(ei_has_none)>
struct ei_binary_result_of_select {typedef ArgType0 type;};
template<typename Func, typename ArgType0, typename ArgType1>
@@ -206,7 +216,7 @@ struct ei_result_of<Func(ArgType0,ArgType1)> {
static ei_has_std_result_type testFunctor(T const *, typename T::result_type const * = 0);
template<typename T>
static ei_has_tr1_result testFunctor(T const *, typename T::template result<T(ArgType0,ArgType1)>::type const * = 0);
static ei_has_nothing testFunctor(...);
static ei_has_none testFunctor(...);
typedef typename ei_binary_result_of_select<Func, ArgType0, ArgType1, sizeof(testFunctor(static_cast<Func*>(0)))>::type type;
};