fix code format

- fixes error in CI

cmake/modules/AE108_PETSc.cc

@@ -4,10 +4,10 @@
 
 int main() {
 #ifdef AE108_PETSC_COMPLEX
-static_assert(std::is_same<PetscScalar, std::complex<double>>::value, "");
+  static_assert(std::is_same<PetscScalar, std::complex<double>>::value, "");
 #endif
 
 #ifdef AE108_PETSC_REAL
-static_assert(std::is_same<PetscScalar, double>::value, "");
+  static_assert(std::is_same<PetscScalar, double>::value, "");
 #endif
 }
\ No newline at end of file

cpppetsc/src/Matrix.cc

@@ -23,10 +23,10 @@ namespace cpppetsc {
 template class Matrix<SequentialComputePolicy>;
 template class Matrix<ParallelComputePolicy>;
 
-template std::ostream &
-operator<<(std::ostream &, const Matrix<SequentialComputePolicy> &);
 template std::ostream &operator<<(std::ostream &,
-                                         const Matrix<ParallelComputePolicy> &);
+                                  const Matrix<SequentialComputePolicy> &);
+template std::ostream &operator<<(std::ostream &,
+                                  const Matrix<ParallelComputePolicy> &);
 
 } // namespace cpppetsc
 } // namespace ae108

cpppetsc/src/Vector.cc

@@ -23,10 +23,10 @@ namespace cpppetsc {
 template class Vector<SequentialComputePolicy>;
 template class Vector<ParallelComputePolicy>;
 
-template std::ostream &
-operator<<(std::ostream &, const Vector<SequentialComputePolicy> &);
 template std::ostream &operator<<(std::ostream &,
-                                         const Vector<ParallelComputePolicy> &);
+                                  const Vector<SequentialComputePolicy> &);
+template std::ostream &operator<<(std::ostream &,
+                                  const Vector<ParallelComputePolicy> &);
 
 } // namespace cpppetsc
 } // namespace ae108