analitza/commands/realpower.cpp

0001 /*************************************************************************************
0002  *  Copyright (C) 2020 Aleix Pol Gonzalez <aleixpol@kde.org>                         *
0003  *                                                                                   *
0004  *  This program is free software; you can redistribute it and/or                    *
0005  *  modify it under the terms of the GNU General Public License                      *
0006  *  as published by the Free Software Foundation; either version 2                   *
0007  *  of the License, or (at your option) any later version.                           *
0008  *                                                                                   *
0009  *  This program is distributed in the hope that it will be useful,                  *
0010  *  but WITHOUT ANY WARRANTY; without even the implied warranty of                   *
0011  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                    *
0012  *  GNU General Public License for more details.                                     *
0013  *                                                                                   *
0014  *  You should have received a copy of the GNU General Public License                *
0015  *  along with this program; if not, write to the Free Software                      *
0016  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA   *
0017  *************************************************************************************/
0018
0019 #include "realpower.h"
0020
0021 #include <QCoreApplication>
0022
0023 #include "expression.h"
0024 #include "list.h"
0025 #include "value.h"
0026
0027 using namespace Analitza;
0028
0029 const QString RealPower::id = QStringLiteral("realpower");
0030 const ExpressionType RealPower::type = ExpressionType(ExpressionType::Lambda)
0031                                         .addParameter(ExpressionType::Value)
0032                                         .addParameter(ExpressionType::Value)
0033                                         .addParameter(ExpressionType::Value);
0034
0035 Expression RealPower::operator()(const QList<Expression>& args)
0036 {
0037     const auto x = args.constFirst().toReal().complexValue();
0038     const auto r = args.constLast().toReal().complexValue();
0039
0040     double sign = x.real() >= 0 ? 1 : -1;
0041
0042     Cn reta;
0043     reta.setValue(sign * std::pow(sign * x, r));
0044
0045     qDebug() << "retaaaaa" << reta.toString();
0046     return Expression(reta);
0047 }