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Fix regression in SparseMatrix::ReverseInnerIterator

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(grafted from eedb87f4ba
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This commit is contained in:
Gael Guennebaud
2016-11-14 14:05:53 +01:00
parent 1079967710
commit b4ddafcfac
2 changed files with 36 additions and 5 deletions
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30
test/sparse_basic.cpp
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@@ -219,6 +219,36 @@ template<typename SparseMatrixType> void sparse_basic(const SparseMatrixType& re
}
}
// test reverse iterators
{
DenseMatrix refMat2 = DenseMatrix::Zero(rows, cols);
SparseMatrixType m2(rows, cols);
initSparse<Scalar>(density, refMat2, m2);
std::vector<Scalar> ref_value(m2.innerSize());
std::vector<Index> ref_index(m2.innerSize());
if(internal::random<bool>())
m2.makeCompressed();
for(Index j = 0; j<m2.outerSize(); ++j)
{
Index count_forward = 0;
for(typename SparseMatrixType::InnerIterator it(m2,j); it; ++it)
{
ref_value[ref_value.size()-1-count_forward] = it.value();
ref_index[ref_index.size()-1-count_forward] = it.index();
count_forward++;
}
Index count_reverse = 0;
for(typename SparseMatrixType::ReverseInnerIterator it(m2,j); it; --it)
{
VERIFY_IS_APPROX( std::abs(ref_value[ref_value.size()-count_forward+count_reverse])+1, std::abs(it.value())+1);
VERIFY_IS_EQUAL( ref_index[ref_index.size()-count_forward+count_reverse] , it.index());
count_reverse++;
}
VERIFY_IS_EQUAL(count_forward, count_reverse);
}
}
// test transpose
{
DenseMatrix refMat2 = DenseMatrix::Zero(rows, cols);