Fix documentation issues and add a Jacobi documentation group.

doc/DoxygenLayout.xml

@@ -3,7 +3,7 @@
   <!-- Navigation index tabs for HTML output -->
   <navindex>
     <tab type="mainpage" visible="yes" title=""/>
-    <tab type="user" visible="yes" title="Tutorial" url="https://github.com/ginkgo-project/ginkgo/wiki/Tutorial:-Building-a-2D-Poisson-Solver" />
+    <tab type="user" visible="yes" title="Tutorial" url="https://github.com/ginkgo-project/ginkgo/wiki/Tutorial:-Building-a-Poisson-Solver" />
     <tab type="user" visible="yes" title="Examples" url="@ref Examples" />
     <tab type="user" visible="yes" title="Using Ginkgo" url="@ref install_ginkgo">
       <tab type="user" visible="yes" title="Installing Ginkgo" url="@ref install_ginkgo" />

doc/headers/jacobi.hpp

@@ -0,0 +1,40 @@
+/*******************************<GINKGO LICENSE>******************************
+Copyright (c) 2017-2019, the Ginkgo authors
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+1. Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+******************************<GINKGO LICENSE>*******************************/
+
+/**
+ * @defgroup jacobi Jacobi Preconditioner
+ *
+ * @brief A module dedicated to the implementation and usage of the
+ * Jacobi Preconditioner in Ginkgo.
+ *
+ * @ingroup precond
+ */

include/ginkgo/core/factorization/par_ilu.hpp

@@ -89,7 +89,7 @@ namespace factorization {
  * @tparam IndexType  Type of the indices of all matrices used in this class
  *
  * @ingroup factor
- * @ingroup linop
+ * @ingroup LinOp
  */
 template <typename ValueType = default_precision, typename IndexType = int32>
 class ParIlu : public Composition<ValueType> {

include/ginkgo/core/preconditioner/jacobi.hpp

@@ -56,8 +56,6 @@ namespace preconditioner {
  * @tparam IndexType  type used for storing indices of the matrix
  *
  * @ingroup jacobi
- * @ingroup precond
- * @ingroup LinOp
  */
 template <typename IndexType>
 struct block_interleaved_storage_scheme {

include/ginkgo/core/solver/ir.hpp

@@ -89,6 +89,9 @@ namespace solver {
  * its eigenvalues `lambda` have to satisfy the equation `|lambda - 1| < 1).
  *
  * @tparam ValueType  precision of matrix elements
+ *
+ * @ingroup solvers
+ * @ingroup LinOp
  */
 template <typename ValueType = default_precision>
 class Ir : public EnableLinOp<Ir<ValueType>> {