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Diffstat (limited to 'Eigen/src/Core/util/XprHelper.h')
| -rw-r--r-- | Eigen/src/Core/util/XprHelper.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Eigen/src/Core/util/XprHelper.h b/Eigen/src/Core/util/XprHelper.h index e26a92022..ebe70f193 100644 --- a/Eigen/src/Core/util/XprHelper.h +++ b/Eigen/src/Core/util/XprHelper.h @@ -664,6 +664,20 @@ bool is_same_dense(const T1 &, const T2 &, typename enable_if<!(has_direct_acces return false; } +// Internal helper defining the cost of a scalar division for the type T. +// The default heuristic can be specialized for each scalar type and architecture. +template<typename T,bool Vectorized=false,typename EnaleIf = void> +struct scalar_div_cost { + enum { value = 8*NumTraits<T>::MulCost }; +}; + + +template<bool Vectorized> +struct scalar_div_cost<signed long,Vectorized,typename enable_if<sizeof(long)==8>::type> { enum { value = 24 }; }; +template<bool Vectorized> +struct scalar_div_cost<unsigned long,Vectorized,typename enable_if<sizeof(long)==8>::type> { enum { value = 21 }; }; + + #ifdef EIGEN_DEBUG_ASSIGN std::string demangle_traversal(int t) { |