win_eigen: Random.h Source File

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00001 // This file is part of Eigen, a lightweight C++ template library
00002 // for linear algebra.
00003 //
00004 // Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
00005 //
00006 // This Source Code Form is subject to the terms of the Mozilla
00007 // Public License v. 2.0. If a copy of the MPL was not distributed
00008 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
00009 
00010 #ifndef EIGEN_RANDOM_H
00011 #define EIGEN_RANDOM_H
00012 
00013 namespace Eigen { 
00014 
00015 namespace internal {
00016 
00017 template<typename Scalar> struct scalar_random_op {
00018   EIGEN_EMPTY_STRUCT_CTOR(scalar_random_op)
00019   template<typename Index>
00020   inline const Scalar operator() (Index, Index = 0) const { return random<Scalar>(); }
00021 };
00022 
00023 template<typename Scalar>
00024 struct functor_traits<scalar_random_op<Scalar> >
00025 { enum { Cost = 5 * NumTraits<Scalar>::MulCost, PacketAccess = false, IsRepeatable = false }; };
00026 
00027 } // end namespace internal
00028 
00047 template<typename Derived>
00048 inline const CwiseNullaryOp<internal::scalar_random_op<typename internal::traits<Derived>::Scalar>, Derived>
00049 DenseBase<Derived>::Random(Index rows, Index cols)
00050 {
00051   return NullaryExpr(rows, cols, internal::scalar_random_op<Scalar>());
00052 }
00053 
00074 template<typename Derived>
00075 inline const CwiseNullaryOp<internal::scalar_random_op<typename internal::traits<Derived>::Scalar>, Derived>
00076 DenseBase<Derived>::Random(Index size)
00077 {
00078   return NullaryExpr(size, internal::scalar_random_op<Scalar>());
00079 }
00080 
00095 template<typename Derived>
00096 inline const CwiseNullaryOp<internal::scalar_random_op<typename internal::traits<Derived>::Scalar>, Derived>
00097 DenseBase<Derived>::Random()
00098 {
00099   return NullaryExpr(RowsAtCompileTime, ColsAtCompileTime, internal::scalar_random_op<Scalar>());
00100 }
00101 
00109 template<typename Derived>
00110 inline Derived& DenseBase<Derived>::setRandom()
00111 {
00112   return *this = Random(rows(), cols());
00113 }
00114 
00124 template<typename Derived>
00125 EIGEN_STRONG_INLINE Derived&
00126 PlainObjectBase<Derived>::setRandom(Index size)
00127 {
00128   resize(size);
00129   return setRandom();
00130 }
00131 
00142 template<typename Derived>
00143 EIGEN_STRONG_INLINE Derived&
00144 PlainObjectBase<Derived>::setRandom(Index rows, Index cols)
00145 {
00146   resize(rows, cols);
00147   return setRandom();
00148 }
00149 
00150 } // end namespace Eigen
00151 
00152 #endif // EIGEN_RANDOM_H