1 files changed, 68 insertions, 0 deletions
diff --git a/sc/inc/matrixoperators.hxx b/sc/inc/matrixoperators.hxx
new file mode 100644
index 0000000000..cd0295bb20
--- /dev/null
+++ b/sc/inc/matrixoperators.hxx
@@ -0,0 +1,68 @@
+/* -*- 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/.
+ */
+
+#pragma once
+
+
+#include <functional>
+#include <utility>
+#include <vector>
+#include "kahan.hxx"
+
+namespace sc::op {
+
+
+template<typename T, typename tRes>
+struct Op_
+{
+    const double mInitVal;
+    const T maOp;
+    Op_(double InitVal, T aOp):
+        mInitVal(InitVal), maOp(std::move(aOp))
+    {
+    }
+    void operator()(tRes& rAccum, double fVal) const
+    {
+        maOp(rAccum, fVal);
+    }
+};
+
+using Op = Op_<std::function<void(double&, double)>, double>;
+using kOp = Op_<std::function<void(KahanSum&, double)>, KahanSum>;
+
+void fkOpSum(KahanSum& rAccum, double fVal);
+void fkOpSumSquare(KahanSum& rAccum, double fVal);
+
+extern kOp kOpSum;
+extern kOp kOpSumSquare;
+extern std::vector<kOp> kOpSumAndSumSquare;
+
+struct Sum
+{
+    static const double InitVal;
+    void operator()(KahanSum& rAccum, double fVal) const;
+};
+
+struct SumSquare
+{
+    static const double InitVal;
+    void operator()(KahanSum& rAccum, double fVal) const;
+};
+
+struct Product
+{
+    static const double InitVal;
+    void operator()(double& rAccum, double fVal) const;
+};
+
+}
+
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */