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* make inverse() do a ReturnByValue

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* add computeInverseWithCheck
* doc improvements
* update test
This commit is contained in:
Benoit Jacob
2009-10-26 14:16:50 -04:00
parent 07d1bcffda
commit 44cdbaba4d
5 changed files with 89 additions and 21 deletions
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9
test/inverse.cpp
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@@ -68,17 +68,26 @@ template<typename MatrixType> void inverse(const MatrixType& m)
//First: an invertible matrix
bool invertible;
RealScalar det;
m2.setZero();
m1.computeInverseAndDetWithCheck(m2, det, invertible);
VERIFY(invertible);
VERIFY_IS_APPROX(identity, m1*m2);
VERIFY_IS_APPROX(det, m1.determinant());
m2.setZero();
m1.computeInverseWithCheck(m2, invertible);
VERIFY(invertible);
VERIFY_IS_APPROX(identity, m1*m2);
//Second: a rank one matrix (not invertible, except for 1x1 matrices)
VectorType v3 = VectorType::Random(rows);
MatrixType m3 = v3*v3.transpose(), m4(rows,cols);
m3.computeInverseAndDetWithCheck(m4, det, invertible);
VERIFY( rows==1 ? invertible : !invertible );
VERIFY_IS_APPROX(det, m3.determinant());
m3.computeInverseWithCheck(m4, invertible);
VERIFY( rows==1 ? invertible : !invertible );
#endif
}