diff options
author | Gael Guennebaud <g.gael@free.fr> | 2015-05-12 18:44:46 +0200 |
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committer | Gael Guennebaud <g.gael@free.fr> | 2015-05-12 18:44:46 +0200 |
commit | e66caf48e871f4c63460d6632605e055bde14156 (patch) | |
tree | fc6dbb34435f63718c9d075cbbcfd1c284faad27 /test/svd_fill.h | |
parent | ef817306252f33e844eb789ef850778de84f47cb (diff) |
Make test matrices for eigensolver/selfadjoint even more tricky
Diffstat (limited to 'test/svd_fill.h')
-rw-r--r-- | test/svd_fill.h | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/test/svd_fill.h b/test/svd_fill.h index aa75326d9..7e44b3d05 100644 --- a/test/svd_fill.h +++ b/test/svd_fill.h @@ -53,19 +53,35 @@ void svd_fill_random(MatrixType &m, int Option = 0) VT.setRandom(); } + Matrix<Scalar,Dynamic,1> samples(7); + samples << 0, 5.60844e-313, -5.60844e-313, 4.94e-324, -4.94e-324, -1./NumTraits<RealScalar>::highest(), 1./NumTraits<RealScalar>::highest(); + if(Option==Symmetric) { m = U * d.asDiagonal() * U.transpose(); // randomly nullify some rows/columns { - Index count = internal::random<Index>(-1,1); + Index count = internal::random<Index>(-diagSize,diagSize); for(Index k=0; k<count; ++k) { Index i = internal::random<Index>(0,diagSize-1); m.row(i).setZero(); m.col(i).setZero(); } + if(count<0) + // (partly) cancel some coeffs + if(!(dup && unit_uv)) + { + + Index n = internal::random<Index>(0,m.size()-1); + for(Index k=0; k<n; ++k) + { + Index i = internal::random<Index>(0,m.rows()-1); + Index j = internal::random<Index>(0,m.cols()-1); + m(j,i) = m(i,j) = samples(internal::random<Index>(0,samples.size()-1)); + } + } } } else @@ -74,11 +90,9 @@ void svd_fill_random(MatrixType &m, int Option = 0) // (partly) cancel some coeffs if(!(dup && unit_uv)) { - Matrix<Scalar,Dynamic,1> samples(7); - samples << 0, 5.60844e-313, -5.60844e-313, 4.94e-324, -4.94e-324, -1./NumTraits<RealScalar>::highest(), 1./NumTraits<RealScalar>::highest(); Index n = internal::random<Index>(0,m.size()-1); for(Index i=0; i<n; ++i) - m(internal::random<Index>(0,m.rows()-1), internal::random<Index>(0,m.cols()-1)) = samples(internal::random<Index>(0,6)); + m(internal::random<Index>(0,m.rows()-1), internal::random<Index>(0,m.cols()-1)) = samples(internal::random<Index>(0,samples.size()-1)); } } } |