use Double for Units. DecimalEx lib had too many bugs

csharp/Lib/Units/Angle.cs

@@ -1,6 +1,5 @@
-using DecimalMath;
 using InnovEnergy.Lib.Units.Generator;
-using InnovEnergy.Lib.Utils;
+using static System.Math;
 
 namespace InnovEnergy.Lib.Units;
 
@@ -10,16 +9,12 @@ public readonly partial struct Angle
     public static String Unit   => "rad"; 
     public static String Symbol => "∠"; 
 
-    public static readonly Angle Pi = new Angle(DecimalEx.Pi);
+    public Angle(Double value)
-    
-
-    public Angle(Decimal value)
     {
-        var modulo = value.Modulo(DecimalEx.TwoPi);
+        var modulo = value % Tau;  // tau is 2pi
         
-        Value = modulo > DecimalEx.Pi 
+        Value = modulo > PI 
-              ? modulo - DecimalEx.TwoPi 
+              ? modulo - Tau 
               : modulo;
     }
-   
 }

csharp/Lib/Units/Angle.generated.cs

@@ -15,14 +15,14 @@ using T = Angle;
 [JsonConverter(typeof(AngleConverter))]
 public readonly partial struct Angle
 {
-    public Decimal Value { get; }
+    public Double Value { get; }
     public override String ToString() => Value.RoundToSignificantDigits(Units.DisplaySignificantDigits) + Unit;
     
     // scalar multiplication
 
-    public static T operator *(Decimal scalar, T t) => new T(scalar * t.Value);
+    public static T operator *(Double 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, Double scalar) => new T(scalar * t.Value);
-    public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
+    public static T operator /(T t, Double scalar) => new T(t.Value / scalar);
     
     // addition
     
@@ -41,10 +41,7 @@ public readonly partial struct Angle
 
     // conversion
 
-    public static implicit operator T(Decimal d) => new T(d);
+    public static implicit operator T(Double 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
 
@@ -59,7 +56,7 @@ internal class AngleConverter : JsonConverter<Angle>
 {
     public override Angle Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {
-        return new Angle(reader.GetDecimal());
+        return new Angle(reader.GetDouble());
     }
 
     public override void Write(Utf8JsonWriter writer, Angle value, JsonSerializerOptions options)

csharp/Lib/Units/ApparentPower.cs

@@ -8,7 +8,7 @@ public readonly partial struct ApparentPower
     public static String Unit   => "VA";
     public static String Symbol => "S";
 
-    public ApparentPower(Decimal value)
+    public ApparentPower(Double value)
     {
         if (value < 0) throw new ArgumentException("Apparent power cannot be negative", nameof(value));
         Value = value;

csharp/Lib/Units/ApparentPower.generated.cs

@@ -15,14 +15,14 @@ using T = ApparentPower;
 [JsonConverter(typeof(ApparentPowerConverter))]
 public readonly partial struct ApparentPower
 {
-    public Decimal Value { get; }
+    public Double Value { get; }
     public override String ToString() => Value.RoundToSignificantDigits(Units.DisplaySignificantDigits) + Unit;
     
     // scalar multiplication
 
-    public static T operator *(Decimal scalar, T t) => new T(scalar * t.Value);
+    public static T operator *(Double 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, Double scalar) => new T(scalar * t.Value);
-    public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
+    public static T operator /(T t, Double scalar) => new T(t.Value / scalar);
     
     // addition
     
@@ -41,10 +41,7 @@ public readonly partial struct ApparentPower
 
     // conversion
 
-    public static implicit operator T(Decimal d) => new T(d);
+    public static implicit operator T(Double 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
 
@@ -59,7 +56,7 @@ internal class ApparentPowerConverter : JsonConverter<ApparentPower>
 {
     public override ApparentPower Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {
-        return new ApparentPower(reader.GetDecimal());
+        return new ApparentPower(reader.GetDouble());
     }
 
     public override void Write(Utf8JsonWriter writer, ApparentPower value, JsonSerializerOptions options)

csharp/Lib/Units/Composite/Ac1Bus.cs

@@ -1,12 +1,26 @@
-using System.Diagnostics.CodeAnalysis;
 
 namespace InnovEnergy.Lib.Units.Composite;
 
-public record Ac1Bus : AcPhase
+public class Ac1Bus : AcPhase
 {
-    public  Frequency Frequency { get; init; }
+    public Double Frequency { get; internal init; }
 
-    // [SuppressMessage("ReSharper", "RedundantCast")]
+
+    public static Ac1Bus FromVoltageCurrentFrequencyPhi(Double voltageRms,
+                                                        Double currentRms,
+                                                        Double frequency,
+                                                        Double phi) => new()
+    {
+        Frequency = frequency,
+        Current   = currentRms,
+        Voltage   = voltageRms,
+        Power     = AcPower.FromVoltageCurrentPhi(voltageRms, currentRms, phi)
+    };
+}
+
+
+
+   // [SuppressMessage("ReSharper", "RedundantCast")]
     // public static Ac1Bus operator |(Ac1Bus left, Ac1Bus right)
     // {
     //     var f = left.Frequency | right.Frequency;
@@ -20,8 +34,3 @@ public record Ac1Bus : AcPhase
     //         Phi = p.Phi
     //     };
     // }
-
-}
-
-
-

csharp/Lib/Units/Composite/Ac3Bus.cs

@@ -1,19 +1,16 @@
-using static DecimalMath.DecimalEx;
 
 namespace InnovEnergy.Lib.Units.Composite;
 
 
 #pragma warning disable CS8618
 
-public record Ac3Bus
+public class Ac3Bus
 {
-    public AcPhase   L1        { get; init; }
+    public AcPhase L1        { get; internal init; }
-    public AcPhase   L2        { get; init; }
+    public AcPhase L2        { get; internal init; }
-    public AcPhase   L3        { get; init; }
+    public AcPhase L3        { get; internal init; }
-    public Frequency Frequency { get; init; }
     
-    public ApparentPower ApparentPower => L1.ApparentPower + L2.ApparentPower + L3.ApparentPower;
+    public AcPower Power     { get; internal init; }
-    public ReactivePower ReactivePower => L1.ReactivePower + L2.ReactivePower + L3.ReactivePower;
+    
-    public Power         ActivePower   => L1.ActivePower   + L2.ActivePower   + L3.ActivePower;
+    public Double  Frequency { get; internal init; }
-    public Angle         Phi           => ATan2(ReactivePower, ActivePower);
 }

csharp/Lib/Units/Composite/AcPhase.cs

@@ -1,66 +1,8 @@
-using static DecimalMath.DecimalEx;
-
 namespace InnovEnergy.Lib.Units.Composite;
 
+#pragma warning disable CS8618
 
-public record AcPhase : IBus
+public class AcPhase : Bus
 {
-    private readonly Voltage _Voltage;
+    public AcPower Power { get; internal init; }
-    public Voltage Voltage
-    {
-        get  => _Voltage;
-        init => _Voltage = value >= 0m ? value : throw new ArgumentException("RMS value cannot be negative");
-    }
-
-    private readonly Current _Current;
-    public Current Current
-    {
-        get  => _Current;
-        init => _Current = value >= 0m ? value : throw new ArgumentException("RMS value cannot be negative");
-    }
-    
-    public Angle Phi { get; init; }
-    
-    public ApparentPower ApparentPower => Voltage.Value * Current.Value ;
-    public Power         ActivePower   => ApparentPower.Value * PowerFactor;
-    public ReactivePower ReactivePower => ApparentPower.Value * Sin(Phi);
-    public Decimal       PowerFactor   => Cos(Phi);
-    
-    
-    // public static AcPhase operator |(AcPhase left, AcPhase right)
-    // {
-    //     // the Voltages of two phases are expected to be in phase and equal
-    //
-    //     var v = left.Voltage | right.Voltage;  
-    //     
-    //     // currents (RMS) can be different and out of phase 
-    //     // https://www.johndcook.com/blog/2020/08/17/adding-phase-shifted-sine-waves/
-    //     
-    //     // IF
-    //     // left(t)  = ILeft sin(ωt)
-    //     // right(t) = IRight sin(ωt + φ).
-    //     // sum(t)   = left(t) + right(t) = ISum sin(ωt + ψ).
-    //     
-    //     // THEN
-    //     // ψ = arctan( IRight * sin(φ) / (ILeft + IRight cos(φ)) ).
-    //     // C = IRight * sin(φ) / sin(ψ).
-    //             
-    //     // in this calculation left(t) has zero phase shift.
-    //     // we can shift both waves by -left.Phi, so
-    //     // φ := right.phi - left.phi
-    //
-    //
-    //     var phi    = right.Phi - left.Phi;
-    //     var phiSum = ATan2(right.Current * Sin(phi), left.Current + right.Current * Cos(phi));
-    //     var iSum   = right.Current * Sin(phi) / Sin(phiSum);
-    //
-    //     return new AcPhase
-    //     {
-    //        Voltage = v,
-    //        Current = iSum,
-    //        Phi     = phiSum
-    //     };
-    // }
-
-    
 }

csharp/Lib/Units/Composite/AcPower.cs

@@ -0,0 +1,34 @@
+using static System.Math;
+
+namespace InnovEnergy.Lib.Units.Composite;
+
+public class AcPower
+{
+    public Double Apparent { get; internal init; }
+    public Double Active   { get; internal init; }
+    public Double Reactive { get; internal init; }
+    public Double Phi      { get; internal init; }
+    public Double CosPhi   { get; internal init; }
+
+    public static AcPower FromVoltageCurrentPhi(Double voltageRms, Double currentRms, Double phi)
+    {
+        if (voltageRms < 0) throw new ArgumentException("RMS value cannot be negative", nameof(voltageRms));
+        if (currentRms < 0) throw new ArgumentException("RMS value cannot be negative", nameof(currentRms));
+
+        phi = NormalizePhi(phi);
+        
+        var cosPhi   = Cos(phi);
+        var apparent = voltageRms * currentRms;
+
+        return new AcPower
+        {
+            Apparent = apparent,
+            Active   = apparent * cosPhi,
+            Reactive = apparent * Sin(phi),
+            Phi      = phi,
+            CosPhi   = cosPhi
+        };
+    }
+
+    private static Double NormalizePhi(Double phi) => (phi + PI) % Tau - PI; // Tau is 2pi
+}

csharp/Lib/Units/Composite/Bus.cs

@@ -4,8 +4,8 @@ namespace InnovEnergy.Lib.Units.Composite;
 
 [SuppressMessage("ReSharper", "MemberCanBeProtected.Global")]
 
-public interface IBus
+public abstract class Bus
 {
-    public Voltage Voltage { get; }
+    public Double Voltage { get; internal init; }
-    public Current Current { get; }
+    public Double Current { get; internal init; }
 }

csharp/Lib/Units/Composite/DcBus.cs

@@ -1,9 +1,13 @@
 namespace InnovEnergy.Lib.Units.Composite;
 
-public record DcBus : IBus
+public class DcBus : Bus
 {
-   public Voltage Voltage { get; init; }
+   public Double Power { get; internal init; }
-   public Current Current { get; init; }
 
-   public Power Power => Current * Voltage;
+   public static DcBus FromVoltageCurrent(Double voltage, Double current) => new()
+   {
+      Voltage = voltage,
+      Current = current,
+      Power   = current * voltage,
+   };
 }

csharp/Lib/Units/Current.cs

@@ -8,7 +8,7 @@ public readonly partial struct Current
     public static String Unit   => "A";
     public static String Symbol => "I";
 
-    public Current(Decimal value) => Value = value;
+    public Current(Double value) => Value = value;
 
     // P=UI
     public static Power   operator *(Current current, Voltage voltage) => new Power(current.Value * voltage.Value);

csharp/Lib/Units/Current.generated.cs

@@ -15,14 +15,14 @@ using T = Current;
 [JsonConverter(typeof(CurrentConverter))]
 public readonly partial struct Current
 {
-    public Decimal Value { get; }
+    public Double Value { get; }
     public override String ToString() => Value.RoundToSignificantDigits(Units.DisplaySignificantDigits) + Unit;
     
     // scalar multiplication
 
-    public static T operator *(Decimal scalar, T t) => new T(scalar * t.Value);
+    public static T operator *(Double 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, Double scalar) => new T(scalar * t.Value);
-    public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
+    public static T operator /(T t, Double scalar) => new T(t.Value / scalar);
     
     // addition
     
@@ -41,10 +41,7 @@ public readonly partial struct Current
 
     // conversion
 
-    public static implicit operator T(Decimal d) => new T(d);
+    public static implicit operator T(Double 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
 
@@ -59,7 +56,7 @@ internal class CurrentConverter : JsonConverter<Current>
 {
     public override Current Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {
-        return new Current(reader.GetDecimal());
+        return new Current(reader.GetDouble());
     }
 
     public override void Write(Utf8JsonWriter writer, Current value, JsonSerializerOptions options)

csharp/Lib/Units/Energy.cs

@@ -9,8 +9,8 @@ public readonly partial struct Energy
     public static String Unit   => "kWh"; 
     public static String Symbol => "E";     
 
-    public Energy(Decimal value) => Value = value;
+    public Energy(Double value) => Value = value;
     
-    public static Power operator /(Energy energy, TimeSpan     timeSpan) => energy.Value * 1000m / (Decimal) timeSpan.TotalHours ;
+    public static Power operator /(Energy energy, TimeSpan     timeSpan) => energy.Value * 1000 /  timeSpan.TotalHours ;
-    public static Power operator /(Energy energy, UnixTimeSpan timeSpan) => energy.Value * 3_600_000m / timeSpan.Ticks;
+    public static Power operator /(Energy energy, UnixTimeSpan timeSpan) => energy.Value * 3_600_000 / timeSpan.Ticks;
 }

csharp/Lib/Units/Energy.generated.cs

@@ -15,14 +15,14 @@ using T = Energy;
 [JsonConverter(typeof(EnergyConverter))]
 public readonly partial struct Energy
 {
-    public Decimal Value { get; }
+    public Double Value { get; }
     public override String ToString() => Value.RoundToSignificantDigits(Units.DisplaySignificantDigits) + Unit;
     
     // scalar multiplication
 
-    public static T operator *(Decimal scalar, T t) => new T(scalar * t.Value);
+    public static T operator *(Double 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, Double scalar) => new T(scalar * t.Value);
-    public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
+    public static T operator /(T t, Double scalar) => new T(t.Value / scalar);
     
     // addition
     
@@ -41,10 +41,7 @@ public readonly partial struct Energy
 
     // conversion
 
-    public static implicit operator T(Decimal d) => new T(d);
+    public static implicit operator T(Double 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
 
@@ -59,7 +56,7 @@ internal class EnergyConverter : JsonConverter<Energy>
 {
     public override Energy Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {
-        return new Energy(reader.GetDecimal());
+        return new Energy(reader.GetDouble());
     }
 
     public override void Write(Utf8JsonWriter writer, Energy value, JsonSerializerOptions options)

csharp/Lib/Units/Frequency.cs

@@ -9,7 +9,7 @@ public readonly partial struct Frequency
     public static String Unit   => "Hz"; 
     public static String Symbol => "f";
 
-    public Frequency(Decimal value)
+    public Frequency(Double value)
     {
         if (value < 0)
             throw new ArgumentException(nameof(Frequency) + " cannot be negative", nameof(value));

csharp/Lib/Units/Frequency.generated.cs

@@ -15,14 +15,14 @@ using T = Frequency;
 [JsonConverter(typeof(FrequencyConverter))]
 public readonly partial struct Frequency
 {
-    public Decimal Value { get; }
+    public Double Value { get; }
     public override String ToString() => Value.RoundToSignificantDigits(Units.DisplaySignificantDigits) + Unit;
     
     // scalar multiplication
 
-    public static T operator *(Decimal scalar, T t) => new T(scalar * t.Value);
+    public static T operator *(Double 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, Double scalar) => new T(scalar * t.Value);
-    public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
+    public static T operator /(T t, Double scalar) => new T(t.Value / scalar);
     
     // addition
     
@@ -41,10 +41,7 @@ public readonly partial struct Frequency
 
     // conversion
 
-    public static implicit operator T(Decimal d) => new T(d);
+    public static implicit operator T(Double 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
 
@@ -59,7 +56,7 @@ internal class FrequencyConverter : JsonConverter<Frequency>
 {
     public override Frequency Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {
-        return new Frequency(reader.GetDecimal());
+        return new Frequency(reader.GetDouble());
     }
 
     public override void Write(Utf8JsonWriter writer, Frequency value, JsonSerializerOptions options)

csharp/Lib/Units/Generator/Template.txt

@@ -15,14 +15,14 @@ using T = Template;
 [JsonConverter(typeof(TemplateConverter))]
 public readonly partial struct Template
 {
-    public Decimal Value { get; }
+    public Double Value { get; }
     public override String ToString() => Value.RoundToSignificantDigits(Units.DisplaySignificantDigits) + Unit;
     
     // scalar multiplication
 
-    public static T operator *(Decimal scalar, T t) => new T(scalar * t.Value);
+    public static T operator *(Double 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, Double scalar) => new T(scalar * t.Value);
-    public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
+    public static T operator /(T t, Double scalar) => new T(t.Value / scalar);
     
     // addition
     
@@ -41,10 +41,7 @@ public readonly partial struct Template
 
     // conversion
 
-    public static implicit operator T(Decimal d) => new T(d);
+    public static implicit operator T(Double 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
 
@@ -59,7 +56,7 @@ internal class TemplateConverter : JsonConverter<Template>
 {
     public override Template Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {
-        return new Template(reader.GetDecimal());
+        return new Template(reader.GetDouble());
     }
 
     public override void Write(Utf8JsonWriter writer, Template value, JsonSerializerOptions options)

csharp/Lib/Units/Percent.cs

@@ -8,5 +8,5 @@ public readonly partial struct Percent
     public static String Unit   => "%"; 
     public static String Symbol => "%"; // ??
 
-    public Percent(Decimal value) => Value = value;
+    public Percent(Double value) => Value = value;
 }

csharp/Lib/Units/Percent.generated.cs

@@ -15,14 +15,14 @@ using T = Percent;
 [JsonConverter(typeof(PercentConverter))]
 public readonly partial struct Percent
 {
-    public Decimal Value { get; }
+    public Double Value { get; }
     public override String ToString() => Value.RoundToSignificantDigits(Units.DisplaySignificantDigits) + Unit;
     
     // scalar multiplication
 
-    public static T operator *(Decimal scalar, T t) => new T(scalar * t.Value);
+    public static T operator *(Double 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, Double scalar) => new T(scalar * t.Value);
-    public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
+    public static T operator /(T t, Double scalar) => new T(t.Value / scalar);
     
     // addition
     
@@ -41,10 +41,7 @@ public readonly partial struct Percent
 
     // conversion
 
-    public static implicit operator T(Decimal d) => new T(d);
+    public static implicit operator T(Double 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
 
@@ -59,7 +56,7 @@ internal class PercentConverter : JsonConverter<Percent>
 {
     public override Percent Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {
-        return new Percent(reader.GetDecimal());
+        return new Percent(reader.GetDouble());
     }
 
     public override void Write(Utf8JsonWriter writer, Percent value, JsonSerializerOptions options)

csharp/Lib/Units/Power.cs

@@ -9,14 +9,14 @@ public readonly partial struct Power
     public static String Unit   => "W";
     public static String Symbol => "P";
 
-    public Power(Decimal value) => Value = value;
+    public Power(Double value) => Value = value;
     
     // P=UI
     public static Voltage operator /(Power power, Current current) => new Voltage(power.Value / current.Value);
     public static Current operator /(Power power, Voltage voltage) => new Current(power.Value / voltage.Value);
  
-    public static Energy operator *(Power power, TimeSpan timeSpan) => power.Value / 1000m * (Decimal) timeSpan.TotalHours;
+    public static Energy operator *(Power power, TimeSpan timeSpan) => power.Value / 1000 * timeSpan.TotalHours;
-    public static Energy operator *(TimeSpan timeSpan, Power power) => power.Value / 1000m * (Decimal) timeSpan.TotalHours;
+    public static Energy operator *(TimeSpan timeSpan, Power power) => power.Value / 1000 * timeSpan.TotalHours;
     
     public static Energy operator *(Power power, UnixTimeSpan timeSpan) => power.Value * timeSpan.Ticks / 3_600_000;
     public static Energy operator *(UnixTimeSpan timeSpan, Power power) => power.Value * timeSpan.Ticks / 3_600_000;

csharp/Lib/Units/Power.generated.cs

@@ -15,14 +15,14 @@ using T = Power;
 [JsonConverter(typeof(PowerConverter))]
 public readonly partial struct Power
 {
-    public Decimal Value { get; }
+    public Double Value { get; }
     public override String ToString() => Value.RoundToSignificantDigits(Units.DisplaySignificantDigits) + Unit;
     
     // scalar multiplication
 
-    public static T operator *(Decimal scalar, T t) => new T(scalar * t.Value);
+    public static T operator *(Double 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, Double scalar) => new T(scalar * t.Value);
-    public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
+    public static T operator /(T t, Double scalar) => new T(t.Value / scalar);
     
     // addition
     
@@ -41,10 +41,7 @@ public readonly partial struct Power
 
     // conversion
 
-    public static implicit operator T(Decimal d) => new T(d);
+    public static implicit operator T(Double 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
 
@@ -59,7 +56,7 @@ internal class PowerConverter : JsonConverter<Power>
 {
     public override Power Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {
-        return new Power(reader.GetDecimal());
+        return new Power(reader.GetDouble());
     }
 
     public override void Write(Utf8JsonWriter writer, Power value, JsonSerializerOptions options)

csharp/Lib/Units/ReactivePower.cs

@@ -9,5 +9,5 @@ public readonly partial struct ReactivePower
     public static String Unit   => "var";
     public static String Symbol => "Q";
 
-    public ReactivePower(Decimal value) => Value = value;
+    public ReactivePower(Double value) => Value = value;
 }

csharp/Lib/Units/ReactivePower.generated.cs

@@ -15,14 +15,14 @@ using T = ReactivePower;
 [JsonConverter(typeof(ReactivePowerConverter))]
 public readonly partial struct ReactivePower
 {
-    public Decimal Value { get; }
+    public Double Value { get; }
     public override String ToString() => Value.RoundToSignificantDigits(Units.DisplaySignificantDigits) + Unit;
     
     // scalar multiplication
 
-    public static T operator *(Decimal scalar, T t) => new T(scalar * t.Value);
+    public static T operator *(Double 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, Double scalar) => new T(scalar * t.Value);
-    public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
+    public static T operator /(T t, Double scalar) => new T(t.Value / scalar);
     
     // addition
     
@@ -41,10 +41,7 @@ public readonly partial struct ReactivePower
 
     // conversion
 
-    public static implicit operator T(Decimal d) => new T(d);
+    public static implicit operator T(Double 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
 
@@ -59,7 +56,7 @@ internal class ReactivePowerConverter : JsonConverter<ReactivePower>
 {
     public override ReactivePower Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {
-        return new ReactivePower(reader.GetDecimal());
+        return new ReactivePower(reader.GetDouble());
     }
 
     public override void Write(Utf8JsonWriter writer, ReactivePower value, JsonSerializerOptions options)

csharp/Lib/Units/Resistance.cs

@@ -11,7 +11,7 @@ public readonly partial struct Resistance
     public static String Symbol => "R";
     
 
-    public Resistance(Decimal value) => Value = value;
+    public Resistance(Double value) => Value = value;
 
     // U=RI
     public static Voltage operator *(Resistance resistance, Current current) => new Voltage(resistance.Value * current.Value);

csharp/Lib/Units/Resistance.generated.cs

@@ -15,14 +15,14 @@ using T = Resistance;
 [JsonConverter(typeof(ResistanceConverter))]
 public readonly partial struct Resistance
 {
-    public Decimal Value { get; }
+    public Double Value { get; }
     public override String ToString() => Value.RoundToSignificantDigits(Units.DisplaySignificantDigits) + Unit;
     
     // scalar multiplication
 
-    public static T operator *(Decimal scalar, T t) => new T(scalar * t.Value);
+    public static T operator *(Double 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, Double scalar) => new T(scalar * t.Value);
-    public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
+    public static T operator /(T t, Double scalar) => new T(t.Value / scalar);
     
     // addition
     
@@ -41,10 +41,7 @@ public readonly partial struct Resistance
 
     // conversion
 
-    public static implicit operator T(Decimal d) => new T(d);
+    public static implicit operator T(Double 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
 
@@ -59,7 +56,7 @@ internal class ResistanceConverter : JsonConverter<Resistance>
 {
     public override Resistance Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {
-        return new Resistance(reader.GetDecimal());
+        return new Resistance(reader.GetDouble());
     }
 
     public override void Write(Utf8JsonWriter writer, Resistance value, JsonSerializerOptions options)

csharp/Lib/Units/Temperature.cs

@@ -11,5 +11,5 @@ public readonly partial struct Temperature
     public static String Unit   => "°C";
     public static String Symbol => "T";
     
-    public Temperature(Decimal value) => Value = value;
+    public Temperature(Double value) => Value = value;
 }

csharp/Lib/Units/Temperature.generated.cs

@@ -15,14 +15,14 @@ using T = Temperature;
 [JsonConverter(typeof(TemperatureConverter))]
 public readonly partial struct Temperature
 {
-    public Decimal Value { get; }
+    public Double Value { get; }
     public override String ToString() => Value.RoundToSignificantDigits(Units.DisplaySignificantDigits) + Unit;
     
     // scalar multiplication
 
-    public static T operator *(Decimal scalar, T t) => new T(scalar * t.Value);
+    public static T operator *(Double 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, Double scalar) => new T(scalar * t.Value);
-    public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
+    public static T operator /(T t, Double scalar) => new T(t.Value / scalar);
     
     // addition
     
@@ -41,10 +41,7 @@ public readonly partial struct Temperature
 
     // conversion
 
-    public static implicit operator T(Decimal d) => new T(d);
+    public static implicit operator T(Double 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
 
@@ -59,7 +56,7 @@ internal class TemperatureConverter : JsonConverter<Temperature>
 {
     public override Temperature Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {
-        return new Temperature(reader.GetDecimal());
+        return new Temperature(reader.GetDouble());
     }
 
     public override void Write(Utf8JsonWriter writer, Temperature value, JsonSerializerOptions options)

csharp/Lib/Units/Units.cs

@@ -5,17 +5,16 @@ public static class Units
     public static Byte DisplaySignificantDigits { get; set; } = 3;
     public static Byte JsonSignificantDigits    { get; set; } = 3;
     
-    public static Current       A      (this Decimal value) => value;
+    public static Current       A      (this Double value) => value;
-    public static Voltage       V      (this Decimal value) => value;
+    public static Voltage       V      (this Double value) => value;
-    public static Power         W      (this Decimal value) => value;
+    public static Power         W      (this Double value) => value;
-    public static ReactivePower Var    (this Decimal value) => value;
+    public static ReactivePower Var    (this Double value) => value;
-    public static ApparentPower Va     (this Decimal value) => value;
+    public static ApparentPower Va     (this Double value) => value;
-    public static Resistance    Ohm    (this Decimal value) => value;
+    public static Resistance    Ohm    (this Double value) => value;
-    public static Frequency     Hz     (this Decimal value) => value;
+    public static Frequency     Hz     (this Double value) => value;
-    public static Angle         Rad    (this Decimal value) => value;
+    public static Angle         Rad    (this Double value) => value;
-    public static Temperature   Celsius(this Decimal value) => value;
+    public static Temperature   Celsius(this Double value) => value;
-    public static Energy        KWh    (this Decimal value) => value;
+    public static Energy        KWh    (this Double value) => value;
-    public static Percent       Percent(this Decimal value) => value;
 }
 
 public static class Prefixes

csharp/Lib/Units/Voltage.cs

@@ -9,7 +9,7 @@ public readonly partial struct Voltage
     public static String Unit   => "V";
     public static String Symbol => "U";
 
-    public Voltage(Decimal value) => Value = value;
+    public Voltage(Double value) => Value = value;
 
     
     // U=RI

csharp/Lib/Units/Voltage.generated.cs

@@ -15,14 +15,14 @@ using T = Voltage;
 [JsonConverter(typeof(VoltageConverter))]
 public readonly partial struct Voltage
 {
-    public Decimal Value { get; }
+    public Double Value { get; }
     public override String ToString() => Value.RoundToSignificantDigits(Units.DisplaySignificantDigits) + Unit;
     
     // scalar multiplication
 
-    public static T operator *(Decimal scalar, T t) => new T(scalar * t.Value);
+    public static T operator *(Double 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, Double scalar) => new T(scalar * t.Value);
-    public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
+    public static T operator /(T t, Double scalar) => new T(t.Value / scalar);
     
     // addition
     
@@ -41,10 +41,7 @@ public readonly partial struct Voltage
 
     // conversion
 
-    public static implicit operator T(Decimal d) => new T(d);
+    public static implicit operator T(Double 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
 
@@ -59,7 +56,7 @@ internal class VoltageConverter : JsonConverter<Voltage>
 {
     public override Voltage Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {
-        return new Voltage(reader.GetDecimal());
+        return new Voltage(reader.GetDouble());
     }
 
     public override void Write(Utf8JsonWriter writer, Voltage value, JsonSerializerOptions options)