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Ensure all generated matrices for inverse_4x4 testes are invertible, this fix #2248 .

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Guoqiang QI 2021-05-13 15:03:30 +00:00 committed by Rasmus Munk Larsen
parent 972cf0c28a
commit 3e006bfd31
1 changed files with 4 additions and 5 deletions
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9
test/prec_inverse_4x4.cpp
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@ -30,18 +30,17 @@ template<typename MatrixType> void inverse_general_4x4(int repeat)
{
using std::abs;
typedef typename MatrixType::Scalar Scalar;
typedef typename MatrixType::RealScalar RealScalar;
double error_sum = 0., error_max = 0.;
for(int i = 0; i < repeat; ++i)
{
MatrixType m;
RealScalar absdet;
bool is_invertible;
do {
m = MatrixType::Random();
absdet = abs(m.determinant());
} while(absdet < NumTraits<Scalar>::epsilon());
is_invertible = Eigen::FullPivLU<MatrixType>(m).isInvertible();
} while(!is_invertible);
MatrixType inv = m.inverse();
double error = double( (m*inv-MatrixType::Identity()).norm() * absdet / NumTraits<Scalar>::epsilon() );
double error = double( (m*inv-MatrixType::Identity()).norm());
error_sum += error;
error_max = (std::max)(error_max, error);
}