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add the possibility to reserve room for inner vector in SparseMatrix

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This commit is contained in:
Gael Guennebaud
2011-09-08 13:42:54 +02:00
parent 7898281b2b
commit 7706bafcfd
3 changed files with 276 additions and 33 deletions
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22
test/sparse_basic.cpp
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@@ -140,6 +140,28 @@ template<typename SparseMatrixType> void sparse_basic(const SparseMatrixType& re
m2.finalize();
VERIFY_IS_APPROX(m2,m1);
}
// test insert (un-compressed)
for(int mode=0;mode<4;++mode)
{
DenseMatrix m1(rows,cols);
m1.setZero();
SparseMatrixType m2(rows,cols);
VectorXi r(VectorXi::Constant(m2.outerSize(), ((mode%2)==0) ? m2.innerSize() : std::max<int>(1,m2.innerSize()/8)));
m2.reserve(r);
for (int k=0; k<rows*cols; ++k)
{
int i = internal::random<int>(0,rows-1);
int j = internal::random<int>(0,cols-1);
if (m1.coeff(i,j)==Scalar(0))
m2.insert(i,j) = m1(i,j) = internal::random<Scalar>();
if(mode==3)
m2.reserve(r);
}
m2.finalize();
m2.makeCompressed();
VERIFY_IS_APPROX(m2,m1);
}
// test basic computations
{