Core/Constants.hpp

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#pragma once
 
#include <cmath>
#include <complex>
#include <limits>
 
namespace nc::constants
{
    constexpr double c     = 3.e8;                                    
    constexpr double e     = 2.718281828459045;                       
    constexpr double inf   = std::numeric_limits<double>::infinity(); 
    constexpr double pi    = 3.141592653589793238462643383279502884;  
    constexpr double twoPi = 2. * pi;                                 
    const double     nan   = std::nan("1");                           
    constexpr auto   j     = std::complex<double>(0, 1);              // sqrt(-1) unit imaginary number
 
    constexpr double DAYS_PER_WEEK           = 7;    
    constexpr double MINUTES_PER_HOUR        = 60;   
    constexpr double SECONDS_PER_MINUTE      = 60;   
    constexpr double MILLISECONDS_PER_SECOND = 1000; 
    constexpr double SECONDS_PER_HOUR        = MINUTES_PER_HOUR * SECONDS_PER_MINUTE; 
    constexpr double HOURS_PER_DAY           = 24;                                    
    constexpr double MINUTES_PER_DAY         = HOURS_PER_DAY * MINUTES_PER_HOUR;      
    constexpr double SECONDS_PER_DAY         = MINUTES_PER_DAY * SECONDS_PER_MINUTE;  
    constexpr double MILLISECONDS_PER_DAY =
        SECONDS_PER_DAY * MILLISECONDS_PER_SECOND;                       
    constexpr double SECONDS_PER_WEEK = SECONDS_PER_DAY * DAYS_PER_WEEK; 
} // namespace nc::constants