1 files changed, 58 insertions, 0 deletions
diff --git a/scaddins/source/analysis/bessel.hxx b/scaddins/source/analysis/bessel.hxx
new file mode 100644
index 0000000000..d42725432e
--- /dev/null
+++ b/scaddins/source/analysis/bessel.hxx
@@ -0,0 +1,58 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <sal/types.h>
+
+namespace sca::analysis
+{
+//     BESSEL functions
+
+/** Returns the result for the unmodified BESSEL function of first kind (J), n-th order, at point x.
+
+    @throws css::lang::IllegalArgumentException
+    @throws css::sheet::NoConvergenceException
+*/
+double BesselJ(double x, sal_Int32 n);
+
+/** Returns the result for the modified BESSEL function of first kind (I), n-th order, at point x.
+
+    @throws css::lang::IllegalArgumentException
+    @throws css::sheet::NoConvergenceException
+*/
+double BesselI(double x, sal_Int32 n);
+
+/** Returns the result for the unmodified BESSEL function of second kind (Y), n-th order, at point x.
+
+    @throws css::lang::IllegalArgumentException
+    @throws css::sheet::NoConvergenceException
+*/
+double BesselY(double x, sal_Int32 n);
+
+/** Returns the result for the modified BESSEL function of second kind (K), n-th order, at point x.
+
+    @throws css::lang::IllegalArgumentException
+    @throws css::sheet::NoConvergenceException
+*/
+double BesselK(double x, sal_Int32 n);
+
+} // namespace sca::analysis
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */