Introduce number type

csharp/Lib/Units/Number.cs

@@ -0,0 +1,13 @@
+using InnovEnergy.Lib.Units.Generator;
+
+
+namespace InnovEnergy.Lib.Units;
+
+[Sum]
+public readonly partial struct Number
+{
+    public static String Unit   => ""; 
+    public static String Symbol => "";     
+
+    public Number(Decimal value) => Value = value;
+}

csharp/Lib/Units/Number.generated.cs

@@ -0,0 +1,77 @@
+#nullable enable // Auto-generated code requires an explicit '#nullable' directive in source.
+#define Sum
+
+using static System.Math;
+
+namespace InnovEnergy.Lib.Units;
+
+using T = Number;
+
+public readonly partial struct Number
+{
+    public Decimal Value { get; }
+    public override String ToString() => Value + Unit;
+    
+    // scalar multiplication
+
+    public static T operator *(Decimal scalar, T t) => new T(scalar * t.Value);
+    public static T operator *(T t, Decimal scalar) => new T(scalar * t.Value);
+    public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
+    
+    // parallel
+    
+    #if Sum
+    
+    public static T operator |(T left, T right) => new T(left.Value + right.Value);
+    public static T operator -(T t)             => new T(-t.Value);
+    
+    #elif Mean
+    
+    public static T operator |(T left, T right) => new T((left.Value + right.Value)/2m);
+    
+    #elif Equal
+    
+    public static T operator |(T left, T right)
+    {
+        var d = Max(Abs(left.Value), Abs(right.Value));
+
+        if (d == 0m)
+            return new T(0m);
+
+        var relativeError = Abs(left.Value - right.Value) / d;
+
+        const Decimal maxRelativeError = 0.05m;
+        
+        if (relativeError > maxRelativeError)
+            throw new Exception($"{nameof(left)} and {nameof(right)} must be approximately equal.\n" +
+                                $"Difference > {maxRelativeError * 100}% detected\n" +
+                                $"{nameof(left)} : {left}\n" +
+                                $"{nameof(right)}: {right}");
+
+        return new T((left.Value + right.Value) / 2m);
+    }    
+    #endif
+
+    // compare
+
+    public static Boolean operator ==(T left, T right) => left.Value == right.Value;
+    public static Boolean operator !=(T left, T right) => left.Value != right.Value;
+    public static Boolean operator > (T left, T right) => left.Value >  right.Value;
+    public static Boolean operator < (T left, T right) => left.Value <  right.Value;
+    public static Boolean operator >=(T left, T right) => left.Value >= right.Value;
+    public static Boolean operator <=(T left, T right) => left.Value <= right.Value;
+
+    // conversion
+
+    public static implicit operator T(Decimal d) => new T(d);
+    public static implicit operator T(Double d)  => new T((Decimal)d);
+    public static implicit operator T(Int32 i)   => new T(i);
+    public static implicit operator Decimal(T t) => t.Value;
+
+    // equality
+
+    public Boolean Equals(T other) => Value == other.Value;
+    public override Boolean Equals(Object? obj) => obj is T other && Equals(other);
+    public override Int32 GetHashCode() => Value.GetHashCode();
+
+}