UravnSystem/FunctionSystem/Level2.cs

//#define IsTestDownLevel2
#define IsDriverUpperSec
#define IsDriverUpperTan
#define IsDriverUpperCtg
#define IsDriverUpperLog

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace FunctionSystem
{
    public static class Level2
    {
#if IsTestDownLevel2

        #region заглушки

        public static double Sec(double x) => 1;

        public static double Tan(double x) => 1;

        public static double Ctg(double x) => 1;

        public static double Log(double x, double osn) => 1;

        #endregion

#else

#if IsDriverUpperSec

        public static double Sec(double x)
        {
            Console.WriteLine($"Cos - {Level1.Cos(x)}");
            return 0;
        }
#else
        
        public static double Sec(double x)
        {
            return 1 / Level1.Cos(x);
        }

#endif

#if IsDriverUpperTan                                                   

        public static double Tan(double x) 
        {
            Console.WriteLine($"Sin - {Level0.Sin(x)}");
            Console.WriteLine($"Cos - {Level1.Cos(x)}");
            return 0;
        }

#else

        public static double Tan(double x)
        {
            return Level0.Sin(x) / Level1.Cos(x);
        }

#endif

#if IsDriverUpperCtg                                                   

        public static double Ctg(double x)
        {
            Console.WriteLine($"Cos - {Level1.Cos(x)}");
            Console.WriteLine($"Sin - {Level0.Sin(x)}");
            return 0;
        }

#else

        public static double Ctg(double x)
        {
            return Level1.Cos(x) / Level0.Sin(x);
        }

#endif

#if IsDriverUpperLog                                                   

        public static double Log(double x, double osn)
        {
            Console.WriteLine($"Ln(x) - {Level0.Ln(x)}");
            Console.WriteLine($"Ln({osn}) - {Level0.Ln(osn)}");
            return 0;
        }

#else

        public static double Log(double x, double osn) 
        {
            return Level0.Ln(x) / Level0.Ln(osn);
        }

#endif

#endif
    }
}