Improve dopcumentation

diff --git a/include/deal.II/lac/diagonal_matrix.h b/include/deal.II/lac/diagonal_matrix.h
index 86d96250dbdb3c26a452dbdb141cfad12ffdbdec..8adc079b36212910a8668eb2ecd4a9ea70014883 100644 (file)
--- a/include/deal.II/lac/diagonal_matrix.h
+++ b/include/deal.II/lac/diagonal_matrix.h
@@ -58,7 +58,9 @@ public:
   DiagonalMatrix() = default;
 
   /**
-   * Constructor immediately initializing the object properly.
+   * Constructor initializing this object as a diagonal matrix of size `n x n`
+   * where `n` is the size of the vector, and with diagonal entries equal to the
+   * elements of @p vec.
    */
   explicit DiagonalMatrix(const VectorType &vec);