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* 4x4 inverse: revert to cofactors method

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* inverse tests: use createRandomMatrixOfRank, use more strict precision
* tests: createRandomMatrixOfRank: support 1x1 matrices
* determinant: nest the xpr
* Minor: add comment
This commit is contained in:
Benoit Jacob
2009-12-09 12:43:25 -05:00
parent f0315295e9
commit d2e44f2636
6 changed files with 43 additions and 121 deletions
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5
Eigen/src/Core/Minor.h
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@@ -1,7 +1,7 @@
// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2006-2008 Benoit Jacob <jacob.benoit.1@gmail.com>
// Copyright (C) 2006-2009 Benoit Jacob <jacob.benoit.1@gmail.com>
//
// Eigen is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
@@ -54,7 +54,8 @@ struct ei_traits<Minor<MatrixType> >
MaxColsAtCompileTime = (MatrixType::MaxColsAtCompileTime != Dynamic) ?
int(MatrixType::MaxColsAtCompileTime) - 1 : Dynamic,
Flags = _MatrixTypeNested::Flags & HereditaryBits,
CoeffReadCost = _MatrixTypeNested::CoeffReadCost
CoeffReadCost = _MatrixTypeNested::CoeffReadCost // minor is used typically on tiny matrices,
// where loops are unrolled and the 'if' evaluates at compile time
};
};