Xpetra: Support transposes in matrix-matrix product for BlockedCrsMatrix type

[MalachiTimothyPhillips]

@trilinos/xpetra

[github-actions]

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Reproducing CI builds locally

CI builds can be reproduced locally in a container.

Requirements: Python 3.9+, Podman, CMake

Steps:

• Check out the branch of the PR locally.
• Run commonTools/pr_reproducer/reproducer.sh.

[github-actions]

Your PR updated files that did not respect package formatting settings.
Please apply the patch given below. Alternatively you can download a patch file here.

Patch

diff --git a/packages/xpetra/src/Utils/Xpetra_MatrixMatrix_def.hpp b/packages/xpetra/src/Utils/Xpetra_MatrixMatrix_def.hpp
index e41f5dd6..af4d38ad 100644
--- a/packages/xpetra/src/Utils/Xpetra_MatrixMatrix_def.hpp
+++ b/packages/xpetra/src/Utils/Xpetra_MatrixMatrix_def.hpp
@@ -189,7 +189,8 @@ RCP<Xpetra::BlockedCrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Node>> MatrixM
   const size_t B_inner = transposeB ? B.Cols() : B.Rows();
   TEUCHOS_TEST_FOR_EXCEPTION(A_inner != B_inner, Exceptions::RuntimeError,
                              "TwoMatrixMultiplyBlock: Block dimensions are not compatible for multiplication. "
-                             "A has " << A_inner << " block columns and B has " << B_inner << " block rows.");
+                             "A has "
+                                 << A_inner << " block columns and B has " << B_inner << " block rows.");
 
   RCP<const MapExtractor> rgmapextractor = transposeA ? A.getDomainMapExtractor() : A.getRangeMapExtractor();
   RCP<const MapExtractor> domapextractor = transposeB ? B.getRangeMapExtractor() : B.getDomainMapExtractor();

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