Temperature.cs

using System;
 
namespace Waher.Script.Units.BaseQuantities
{
    public class Temperature : IBaseQuantity
    {
        public Temperature()
        {
        }
 
        public string Name => "Temperature";
 
        public AtomicUnit ReferenceUnit => referenceUnit;
 
        public Unit Reference => reference;
 
        private static readonly AtomicUnit referenceUnit = new AtomicUnit("K");
        private static readonly Unit reference = new Unit(referenceUnit);
 
        public string[] BaseUnits
        {
            get
            {
                return new string[]
                {
                    "°C",
                    //"C",      // To avoid confusion with the Coulomb unit C
                    "°F",
                    //"F",      // To avoid confusion with the Faraday unit F
                    "K"
                };
            }
        }
 
        public bool ToReferenceUnit(ref double Magnitude, ref double NrDecimals, string BaseUnit, int Exponent)
        {
            if (Exponent == 1)
            {
                switch (BaseUnit)
                {
                    case "°C":
                    //case "C":     // To avoid confusion with the Coulomb unit C
                        Magnitude += 273.15;
                        return true;
 
                    case "°F":
                    //case "F":     // To avoid confusion with the Faraday unit F
                        Magnitude = (Magnitude - 32) / 1.8 + 273.15;
                        NrDecimals += log10_1p8;
                        return true;
 
                    case "K":
                        return true;
                }
            }
 
            return false;
        }
 
        private static readonly double log10_1p8 = Math.Log10(1.8);
 
        public bool FromReferenceUnit(ref double Magnitude, ref double NrDecimals, string BaseUnit, int Exponent)
        {
            if (Exponent == 1)
            {
                switch (BaseUnit)
                {
                    case "°C":
                    //case "C":     // To avoid confusion with the Coulomb unit C
                        Magnitude -= 273.15;
                        return true;
 
                    case "°F":
                    //case "F":     // To avoid confusion with the Faraday unit F
                        Magnitude = (Magnitude - 273.15) * 1.8 + 32;
                        NrDecimals -= log10_1p8;
                        return true;
 
                    case "K":
                        return true;
                }
            }
 
            return false;
        }
 
    }
}