devtools/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2026-04-10 11:34:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

Democracy 1 - 0 Dictatorship

Browse Source 
After huge thread on eigen mailing list, it appears that i'm the
only one in favor of prefix Ei. Everybody else prefers namespace
Eigen like we did in Eigen 1. So, revert.

Also add a macro USING_EIGEN_DATA_TYPES that application programmers
can use to automatically do "using"on the Matrix class and its
matrix/vector typedefs:
using Eigen::Matrix;
using Eigen::Matrix2d;
using Eigen::Vector2d;
... (the list of typedefs is really long).

thanks to the suffixes, the Vector typedefs aren't really polluting.

CCMAIL:eigen@lists.tuxfamily.org

P.S. Danny, please skip this one :) I know you already reported the
namespace->prefix move, now that one would be too much noise :)
This commit is contained in:
Benoit Jacob
2007-10-11 20:14:01 +00:00
parent 3c98677376
commit 61de15f361
32 changed files with 531 additions and 497 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
src/Core/Dot.h
View File

@@ -1,19 +1,19 @@
// This file is part of Eigen, a lightweight C++ template library
// for linear algebra. Eigen itself is part of the KDE project.
// This file is part of gen, a lightweight C++ template library
// for linear algebra. gen itself is part of the KDE project.
//
// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
//
// Eigen is free software; you can redistribute it and/or modify it under the
// gen is free software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the Free Software
// Foundation; either version 2 or (at your option) any later version.
//
// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
// gen is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
// FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
// details.
//
// You should have received a copy of the GNU General Public License along
// with Eigen; if not, write to the Free Software Foundation, Inc., 51
// with gen; if not, write to the Free Software Foundation, Inc., 51
// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
//
// As a special exception, if other files instantiate templates or use macros
@@ -27,26 +27,26 @@
#define EI_DOT_H
template<int Index, int Size, typename Derived1, typename Derived2>
struct EiDotUnroller
struct DotUnroller
{
static void run(const Derived1 &v1, const Derived2& v2, typename Derived1::Scalar &dot)
{
EiDotUnroller<Index-1, Size, Derived1, Derived2>::run(v1, v2, dot);
dot += v1[Index] * EiConj(v2[Index]);
DotUnroller<Index-1, Size, Derived1, Derived2>::run(v1, v2, dot);
dot += v1[Index] * Conj(v2[Index]);
}
};
template<int Size, typename Derived1, typename Derived2>
struct EiDotUnroller<0, Size, Derived1, Derived2>
struct DotUnroller<0, Size, Derived1, Derived2>
{
static void run(const Derived1 &v1, const Derived2& v2, typename Derived1::Scalar &dot)
{
dot = v1[0] * EiConj(v2[0]);
dot = v1[0] * Conj(v2[0]);
}
};
template<int Index, typename Derived1, typename Derived2>
struct EiDotUnroller<Index, EiDynamic, Derived1, Derived2>
struct DotUnroller<Index, Dynamic, Derived1, Derived2>
{
static void run(const Derived1 &v1, const Derived2& v2, typename Derived1::Scalar &dot)
{
@@ -58,37 +58,37 @@ struct EiDotUnroller<Index, EiDynamic, Derived1, Derived2>
template<typename Scalar, typename Derived>
template<typename OtherDerived>
Scalar EiObject<Scalar, Derived>::dot(const OtherDerived& other) const
Scalar Object<Scalar, Derived>::dot(const OtherDerived& other) const
{
assert(IsVector && OtherDerived::IsVector && size() == other.size());
Scalar res;
if(SizeAtCompileTime != EiDynamic && SizeAtCompileTime <= 16)
EiDotUnroller<SizeAtCompileTime-1, SizeAtCompileTime, Derived, OtherDerived>
if(SizeAtCompileTime != Dynamic && SizeAtCompileTime <= 16)
DotUnroller<SizeAtCompileTime-1, SizeAtCompileTime, Derived, OtherDerived>
::run(*static_cast<const Derived*>(this), other, res);
else
{
res = (*this)[0] * EiConj(other[0]);
res = (*this)[0] * Conj(other[0]);
for(int i = 1; i < size(); i++)
res += (*this)[i]* EiConj(other[i]);
res += (*this)[i]* Conj(other[i]);
}
return res;
}
template<typename Scalar, typename Derived>
typename EiNumTraits<Scalar>::Real EiObject<Scalar, Derived>::norm2() const
typename NumTraits<Scalar>::Real Object<Scalar, Derived>::norm2() const
{
assert(IsVector);
return EiReal(dot(*this));
return Real(dot(*this));
}
template<typename Scalar, typename Derived>
typename EiNumTraits<Scalar>::Real EiObject<Scalar, Derived>::norm() const
typename NumTraits<Scalar>::Real Object<Scalar, Derived>::norm() const
{
return EiSqrt(norm2());
return Sqrt(norm2());
}
template<typename Scalar, typename Derived>
EiScalarProduct<Derived> EiObject<Scalar, Derived>::normalized() const
ScalarProduct<Derived> Object<Scalar, Derived>::normalized() const
{
return (*this) / norm();
}