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 <utility>
  15 #include <vector>
  16 #include "kahan.hxx"
  17
  18 namespace sc::op {
  19
  20
  21 template<typename T, typename tRes>
  22 struct Op_
  23 {
  24     const double mInitVal;
  25     const T maOp;
  26     Op_(double InitVal, T aOp):
  27         mInitVal(InitVal), maOp(std::move(aOp))
  28     {
  29     }
  30     void operator()(tRes& rAccum, double fVal) const
  31     {
  32         maOp(rAccum, fVal);
  33     }
  34 };
  35
  36 using Op = Op_<std::function<void(double&, double)>, double>;
  37 using kOp = Op_<std::function<void(KahanSum&, double)>, KahanSum>;
  38
  39 void fkOpSum(KahanSum& rAccum, double fVal);
  40 void fkOpSumSquare(KahanSum& rAccum, double fVal);
  41
  42 extern kOp kOpSum;
  43 extern kOp kOpSumSquare;
  44 extern std::vector<kOp> kOpSumAndSumSquare;
  45
  46 struct Sum
  47 {
  48     static const double InitVal;
  49     void operator()(KahanSum& rAccum, double fVal) const;
  50 };
  51
  52 struct SumSquare
  53 {
  54     static const double InitVal;
  55     void operator()(KahanSum& rAccum, double fVal) const;
  56 };
  57
  58 struct Product
  59 {
  60     static const double InitVal;
  61     void operator()(double& rAccum, double fVal) const;
  62 };
  63
  64 }
  65
  66
  67
  68 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */