sc/inc/matrixoperators.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #pragma once
  11
  12
  13 #include <functional>
  14 #include <vector>
  15 #include "kahan.hxx"
  16
  17 namespace sc::op {
  18
  19
  20 template<typename T, typename tRes>
  21 struct Op_
  22 {
  23     const double mInitVal;
  24     const T maOp;
  25     Op_(double InitVal, T aOp):
  26         mInitVal(InitVal), maOp(std::move(aOp))
  27     {
  28     }
  29     void operator()(tRes& rAccum, double fVal) const
  30     {
  31         maOp(rAccum, fVal);
  32     }
  33 };
  34
  35 using Op = Op_<std::function<void(double&, double)>, double>;
  36 using kOp = Op_<std::function<void(KahanSum&, double)>, KahanSum>;
  37
  38 void fkOpSum(KahanSum& rAccum, double fVal);
  39 void fkOpSumSquare(KahanSum& rAccum, double fVal);
  40
  41 extern kOp kOpSum;
  42 extern kOp kOpSumSquare;
  43 extern std::vector<kOp> kOpSumAndSumSquare;
  44
  45 struct Sum
  46 {
  47     static const double InitVal;
  48     void operator()(KahanSum& rAccum, double fVal) const;
  49 };
  50
  51 struct SumSquare
  52 {
  53     static const double InitVal;
  54     void operator()(KahanSum& rAccum, double fVal) const;
  55 };
  56
  57 struct Product
  58 {
  59     static const double InitVal;
  60     void operator()(double& rAccum, double fVal) const;
  61 };
  62
  63 }
  64
  65
  66
  67 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */