/usr/include/trilinos/Thyra_describeLinearOp_def.hpp is in libtrilinos-thyra-dev 12.4.2-2.
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// ***********************************************************************
//
// Thyra: Interfaces and Support for Abstract Numerical Algorithms
// Copyright (2004) Sandia Corporation
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// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
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// @HEADER
#ifndef THYRA_DESCRIBE_LINEAR_OP_HPP
#define THYRA_DESCRIBE_LINEAR_OP_HPP
#include "Thyra_describeLinearOp_def.hpp"
#include "Thyra_LinearOpBase.hpp"
#include "Thyra_MultiVectorBase.hpp"
#include "Thyra_VectorStdOps.hpp"
#include "Thyra_AssertOp.hpp"
#include "Thyra_AssertOp.hpp"
template<class Scalar>
void Thyra::describeLinearOp(
const LinearOpBase<Scalar> &A,
Teuchos::FancyOStream &out_arg,
const Teuchos::EVerbosityLevel verbLevel
)
{
using Teuchos::RCP;
using Teuchos::FancyOStream;
using Teuchos::OSTab;
typedef Teuchos::ScalarTraits<Scalar> DST;
RCP<FancyOStream> out = rcp(&out_arg,false);
OSTab tab(out);
*out << A.description() << "\n";
const Teuchos::RCP<const VectorSpaceBase<Scalar> >
range = A.range();
const Teuchos::RCP<const VectorSpaceBase<Scalar> >
domain = A.domain();
if(!range.get()) {
return;
}
const Ordinal dimDomain = domain->dim(), dimRange = range->dim();
if ( dimDomain > 0 && dimRange > 0 && verbLevel >= Teuchos::VERB_EXTREME ) {
// Copy into dense matrix by column
Teuchos::RCP<VectorBase<Scalar> > e_j = createMember(domain);
Teuchos::RCP<VectorBase<Scalar> > t = createMember(range); // temp column
RTOpPack::ConstSubVectorView<Scalar> sv;
Array<Scalar> Md(dimRange*dimDomain); // Column major
const Ordinal
cs = 1, // stride for columns or rows
rs = dimRange; // stride for rows or columns
Ordinal i, j;
OSTab tab2(out);
for( j = 0; j < dimDomain; ++j ) {
Thyra::assign( e_j.ptr(), DST::zero() );
Thyra::set_ele( j, DST::one(), e_j.ptr() );
Thyra::apply<Scalar>(A, NOTRANS, *e_j, t.ptr()); // extract the ith column or row
t->acquireDetachedView(Range1D(),&sv);
for( i = 0; i < dimRange; ++i ) Md[ i*cs + j*rs ] = sv(i);
t->releaseDetachedView(&sv);
}
// Print the matrix
for( i = 0; i < dimRange; ++i ) {
for( j = 0; j < dimDomain; ++j )
*out << " " << i << ":" << j << ":" << Md[ i + j*dimRange ];
*out << std::endl;
}
}
}
//
// Explicit instant macro
//
#define THYRA_DESCRIBE_LINEAR_INSTANT(SCALAR) \
\
template void describeLinearOp( \
const LinearOpBase<SCALAR > &A, \
Teuchos::FancyOStream &out_arg, \
const Teuchos::EVerbosityLevel verbLevel \
); \
#endif // THYRA_DESCRIBE_LINEAR_OP_HPP
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