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/* -*- 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 <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: */
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