Mass.cs

using System;
 
namespace Waher.Script.Units.BaseQuantities
{
    public class Mass : IBaseQuantity
    {
        public Mass()
        {
        }
 
        public string Name => "Mass";
 
        public AtomicUnit ReferenceUnit => referenceUnit;
 
        public Unit Reference => reference;
 
        private static readonly AtomicUnit referenceUnit = new AtomicUnit("g");
        private static readonly Unit reference = new Unit(referenceUnit);
 
        public string[] BaseUnits
        {
            get
            {
                return new string[]
                {
                    "g",
                    "t",
                    "u",
                    "lb"
                };
            }
        }
 
        public bool ToReferenceUnit(ref double Magnitude, ref double NrDecimals, string BaseUnit, int Exponent)
        {
            double k;
 
            switch (BaseUnit)
            {
                case "g":
                    return true;
 
                case "t":
                    k = Math.Pow(1e6, Exponent);
                    break;
 
                case "u":
                    k = Math.Pow(1.66e-24, Exponent);
                    break;
 
                case "lb":
                    k = Math.Pow(450, Exponent);
                    break;
 
                default:
                    return false;
            }
 
            Magnitude *= k;
            NrDecimals -= Math.Log10(k);
 
            return true;
        }
 
        public bool FromReferenceUnit(ref double Magnitude, ref double NrDecimals, string BaseUnit, int Exponent)
        {
            return this.ToReferenceUnit(ref Magnitude, ref NrDecimals, BaseUnit, -Exponent);
        }
 
    }
}