2009-05-30 07:48:12 +02:00
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/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2009 Daniel Marjamäki and Cppcheck team.
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2009-06-02 22:32:58 +02:00
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*
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* This program 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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* This program 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 this program. If not, see <http://www.gnu.org/licenses/
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*/
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#include "mathlib.h"
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#include <fstream>
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#include <string>
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#include <cstring>
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#include <iostream>
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#include <sstream>
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#include <cstdlib>
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#include <cmath>
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long MathLib::toLongNumber(const std::string &str)
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{
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if (strncmp(str.c_str(), "0x", 2) == 0)
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{
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2009-08-13 22:13:52 +02:00
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return std::strtoul(str.c_str(), '\0', 16);
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2009-06-02 22:32:58 +02:00
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}
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if (strncmp(str.c_str(), "0", 1) == 0)
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{
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2009-08-13 22:13:52 +02:00
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return std::strtoul(str.c_str(), '\0', 8);
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2009-06-02 22:32:58 +02:00
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}
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2009-08-13 22:13:52 +02:00
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return std::atol(str.c_str());
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2009-06-02 22:32:58 +02:00
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}
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double MathLib::toDoubleNumber(const std::string &str)
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{
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2009-08-13 22:13:52 +02:00
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if (strncmp(str.c_str(), "0x", 2) == 0)
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{
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return std::strtoul(str.c_str(), '\0', 16);
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}
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return std::atof(str.c_str());
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2009-06-02 22:32:58 +02:00
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}
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template <typename T>
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std::string MathLib::toString(T d)
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{
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std::ostringstream result;
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result << d;
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return result.str();
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}
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bool MathLib::isInt(const std::string & str)
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{
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if (str.find(".", 0) != std::string::npos || str.find("e", 0) != std::string::npos
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|| str.find("E", 0) != std::string::npos)
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{
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return false;
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}
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return true;
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}
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std::string MathLib::add(const std::string & first, const std::string & second)
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{
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if (MathLib::isInt(first) && MathLib::isInt(second))
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{
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return toString<long>(toLongNumber(first) + toLongNumber(second));
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}
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return toString<double>(toDoubleNumber(first) + toDoubleNumber(second));
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}
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std::string MathLib::subtract(const std::string &first, const std::string &second)
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{
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if (MathLib::isInt(first) && MathLib::isInt(second))
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{
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return toString<long>(toLongNumber(first) - toLongNumber(second));
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}
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return toString<double>(toDoubleNumber(first) - toDoubleNumber(second));
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}
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std::string MathLib::divide(const std::string &first, const std::string &second)
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{
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if (MathLib::isInt(first) && MathLib::isInt(second))
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{
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return toString<long>(toLongNumber(first) / toLongNumber(second));
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}
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return toString<double>(toDoubleNumber(first) / toDoubleNumber(second));
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}
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std::string MathLib::multiply(const std::string &first, const std::string &second)
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{
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if (MathLib::isInt(first) && MathLib::isInt(second))
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{
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return toString<long>(toLongNumber(first) * toLongNumber(second));
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}
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return toString<double>(toDoubleNumber(first) * toDoubleNumber(second));
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}
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2009-08-02 14:22:39 +02:00
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std::string MathLib::calculate(const std::string &first, const std::string &second, char action)
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{
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std::string result("0");
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switch (action)
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{
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2009-08-02 21:11:17 +02:00
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case '+':
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result = MathLib::add(first, second);
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break;
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case '-':
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result = MathLib::subtract(first, second);
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break;
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case '*':
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result = MathLib::multiply(first, second);
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break;
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case '/':
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result = MathLib::divide(first, second);
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break;
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default:
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std::cout << "##### If you see this, there is a bug: "
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<< "MathLib::calculate() was called with unknown action '"
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<< action
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<< "' #####"
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<< std::endl;
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break;
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2009-08-02 14:22:39 +02:00
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}
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return result;
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}
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2009-06-02 22:32:58 +02:00
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std::string MathLib::sin(const std::string &tok)
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{
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2009-08-13 22:13:52 +02:00
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return toString<double>(std::sin(toDoubleNumber(tok)));
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2009-06-02 22:32:58 +02:00
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}
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std::string MathLib::cos(const std::string &tok)
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{
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2009-08-13 22:13:52 +02:00
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return toString<double>(std::cos(toDoubleNumber(tok)));
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2009-06-02 22:32:58 +02:00
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}
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std::string MathLib::tan(const std::string &tok)
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{
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2009-08-13 22:13:52 +02:00
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return toString<double>(std::tan(toDoubleNumber(tok)));
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2009-06-02 22:32:58 +02:00
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}
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std::string MathLib::abs(const std::string &tok)
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{
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2009-08-13 22:13:52 +02:00
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return toString<double>(std::abs(toDoubleNumber(tok)));
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2009-06-02 22:32:58 +02:00
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}
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bool MathLib::isGreater(const std::string &first, const std::string &second)
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{
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return toDoubleNumber(first) > toDoubleNumber(second);
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}
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