utility.h

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#pragma once
 
#ifndef UTILITY_H_INCLUDED
#define UTILITY_H_INCLUDED
 
#include <cmath>
#include <limits>
#include <algorithm>
#include <string>
 
const double epsilon = 1e-6; 
 
const double infinity = std::numeric_limits<double>::max(); 
 
const double pi = 3.141592653589793; 
 
inline double deg2rad(double deg) {
    return deg*pi/180;
}
 
inline double rad2deg(double rad) {
    return rad*180/pi;
}
 
 
inline int sign(double val) {
    if (std::abs(val) < epsilon) return 0;
    if (val < 0) return -1;
    return 1;
}
 
inline std::string toUpper(const std::string& str) {
    std::string tmp = str;
    std::transform(tmp.begin(), tmp.end(), tmp.begin(), toupper);
    return tmp;
}
 
#endif // UTILITY_H_INCLUDED