From: Peter Munch <peterrmuench@gmail.com>
Date: Tue, 15 Oct 2024 08:32:15 +0000 (+0200)
Subject: Introduce LAPACKFullMatrix::get_state()
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F17782%2Fhead;p=dealii.git

Introduce LAPACKFullMatrix::get_state()
---

diff --git a/doc/news/changes/minor/20241015Munch-1 b/doc/news/changes/minor/20241015Munch-1
new file mode 100644
index 0000000000..b62e30c482
--- /dev/null
+++ b/doc/news/changes/minor/20241015Munch-1
@@ -0,0 +1,6 @@
+Improved: The new function LAPACKFullMatrix::get_state() allows to
+query the current state of LAPACKFullMatrix, which allows to decide
+which method (e.g., LAPACKFullMatrix::solve() vs.
+LAPACKFullMatrix::vmult()) to use.
+<br>
+(Peter Munch, 2024/10/15)
diff --git a/include/deal.II/lac/lapack_full_matrix.h b/include/deal.II/lac/lapack_full_matrix.h
index aa15249f94..7d9596077a 100644
--- a/include/deal.II/lac/lapack_full_matrix.h
+++ b/include/deal.II/lac/lapack_full_matrix.h
@@ -917,6 +917,12 @@ public:
                   const double       threshold   = 0.,
                   const char        *separator   = " ") const;
 
+  /**
+   * Return current state after the last operation here.
+   */
+  LAPACKSupport::State
+  get_state() const;
+
 private:
   /**
    * Internal function to compute various norms.
diff --git a/source/lac/lapack_full_matrix.cc b/source/lac/lapack_full_matrix.cc
index 4f09243e36..38d52117bf 100644
--- a/source/lac/lapack_full_matrix.cc
+++ b/source/lac/lapack_full_matrix.cc
@@ -2574,6 +2574,15 @@ LAPACKFullMatrix<number>::print_formatted(std::ostream      &out,
 }
 
 
+
+template <typename number>
+LAPACKSupport::State
+LAPACKFullMatrix<number>::get_state() const
+{
+  return this->state;
+}
+
+
 //----------------------------------------------------------------------//
 
 template <typename number>