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bug #1092: fix iterative solver ctors for expressions as input

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This commit is contained in:
Gael Guennebaud
2015-10-26 16:16:24 +01:00
parent f93654ae16
commit a5324a131f
7 changed files with 52 additions and 32 deletions
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65
test/sparse_solver.h
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@@ -63,32 +63,47 @@ void check_sparse_solving(Solver& solver, const typename Solver::MatrixType& A,
VERIFY(xm.isApprox(refX,test_precision<Scalar>()));
}
// test initialization ctor
// if not too large, do some extra check:
if(A.rows()<2000)
{
Rhs x(b.rows(), b.cols());
Solver solver2(A);
VERIFY(solver2.info() == Success);
x = solver2.solve(b);
VERIFY(x.isApprox(refX,test_precision<Scalar>()));
}
// test dense Block as the result and rhs:
{
DenseRhs x(refX.rows(), refX.cols());
DenseRhs oldb(db);
x.setZero();
x.block(0,0,x.rows(),x.cols()) = solver.solve(db.block(0,0,db.rows(),db.cols()));
VERIFY(oldb.isApprox(db) && "sparse solver testing: the rhs should not be modified!");
VERIFY(x.isApprox(refX,test_precision<Scalar>()));
}
// test uncompressed inputs
{
Mat A2 = A;
A2.reserve((ArrayXf::Random(A.outerSize())+2).template cast<typename Mat::StorageIndex>().eval());
solver.compute(A2);
Rhs x = solver.solve(b);
VERIFY(x.isApprox(refX,test_precision<Scalar>()));
// test initialization ctor
{
Rhs x(b.rows(), b.cols());
Solver solver2(A);
VERIFY(solver2.info() == Success);
x = solver2.solve(b);
VERIFY(x.isApprox(refX,test_precision<Scalar>()));
}
// test dense Block as the result and rhs:
{
DenseRhs x(refX.rows(), refX.cols());
DenseRhs oldb(db);
x.setZero();
x.block(0,0,x.rows(),x.cols()) = solver.solve(db.block(0,0,db.rows(),db.cols()));
VERIFY(oldb.isApprox(db) && "sparse solver testing: the rhs should not be modified!");
VERIFY(x.isApprox(refX,test_precision<Scalar>()));
}
// test uncompressed inputs
{
Mat A2 = A;
A2.reserve((ArrayXf::Random(A.outerSize())+2).template cast<typename Mat::StorageIndex>().eval());
solver.compute(A2);
Rhs x = solver.solve(b);
VERIFY(x.isApprox(refX,test_precision<Scalar>()));
}
// test expression as input
{
solver.compute(0.5*(A+A));
Rhs x = solver.solve(b);
VERIFY(x.isApprox(refX,test_precision<Scalar>()));
Solver solver2(0.5*(A+A));
Rhs x2 = solver2.solve(b);
VERIFY(x2.isApprox(refX,test_precision<Scalar>()));
}
}
}