mirror of
https://github.com/aportelli/LatAnalyze.git
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128 lines
3.6 KiB
C++
128 lines
3.6 KiB
C++
/*
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* Function.cpp, part of LatAnalyze 3
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*
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* Copyright (C) 2013 - 2014 Antonin Portelli
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*
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* LatAnalyze 3 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* LatAnalyze 3 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with LatAnalyze 3. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <latan/Function.hpp>
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#include <latan/includes.hpp>
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#define DEF_STD_FUNC_1ARG(name, funcName) \
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name##Function::name##Function(void): DoubleFunction(1) {}\
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name##Function::~name##Function(void) {}\
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double name##Function::operator()(std::vector<double> &arg)\
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{\
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return funcName(arg[0]);\
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}\
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name##Function STDMATH_NAMESPACE::funcName;
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#define DEF_STD_FUNC_2ARG(name, funcName) \
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name##Function::name##Function(void): DoubleFunction(2) {}\
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name##Function::~name##Function(void) {}\
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double name##Function::operator()(std::vector<double> &arg)\
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{\
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return funcName(arg[0], arg[1]);\
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}\
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name##Function STDMATH_NAMESPACE::funcName;
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using namespace std;
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using namespace Latan;
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/******************************************************************************
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* DoubleFunction implementation *
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******************************************************************************/
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const DoubleFunction::vecFunc DoubleFunction::nullFunction_ = nullptr;
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// constructor /////////////////////////////////////////////////////////////////
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DoubleFunction::DoubleFunction(const Index nArg, const vecFunc &f)
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: buffer_(new DVec)
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{
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setFunction(f, nArg);
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}
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// access //////////////////////////////////////////////////////////////////////
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Index DoubleFunction::getNArg(void) const
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{
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return buffer_->size();
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}
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void DoubleFunction::setFunction(const vecFunc &f, const Index nArg)
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{
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buffer_->resize(nArg);
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f_ = f;
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}
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// error checking //////////////////////////////////////////////////////////////
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void DoubleFunction::checkSize(const Index nPar) const
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{
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if (nPar != getNArg())
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{
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LATAN_ERROR(Size, "function argument vector has a wrong size (expected "
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+ strFrom(getNArg()) + ", got " + strFrom(nPar)
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+ ")");
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}
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}
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// function call ///////////////////////////////////////////////////////////////
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double DoubleFunction::operator()(const double *arg) const
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{
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return f_(arg);
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}
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double DoubleFunction::operator()(const DVec &arg) const
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{
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checkSize(arg.size());
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return (*this)(arg.data());
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}
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double DoubleFunction::operator()(const std::vector<double> &arg) const
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{
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checkSize(static_cast<Index>(arg.size()));
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return (*this)(arg.data());
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}
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double DoubleFunction::operator()(std::stack<double> &arg) const
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{
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checkSize(static_cast<Index>(arg.size()));
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for (Index i = 0; i < getNArg(); ++i)
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{
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(*buffer_)(getNArg() - i - 1) = arg.top();
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arg.pop();
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}
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return (*this)(*buffer_);
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}
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double DoubleFunction::operator()(const double x0, ...) const
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{
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(*buffer_)[0] = x0;
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if (getNArg() > 1)
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{
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va_list va;
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va_start(va, x0);
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for (Index i = 1; i < getNArg(); ++i)
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{
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(*buffer_)(i) = va_arg(va, double);
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}
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va_end(va);
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}
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return (*this)(*buffer_);
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}
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