🐛Pow fix

Author: Ted-Jin-Lab

Tests/TedToolkit.Console/AssemblyInfo.cs

@@ -1,5 +1,4 @@
 global using TedToolkit.Quantities;
-
 using TedToolkit.QuantExtensions;
 using UnitsNet;
 using Length = UnitsNet.Length;
@@ -8,4 +7,6 @@
 [assembly: NumberExtension<int, Angle>]
 [assembly: NumberExtension<double, Angle>]
 
-[assembly:Quantities<double>(QuantitySystems.ALL, "AbsorbedDose", "Dimensionless", "DimensionlessRatio")]
+[assembly:
+    Quantities<double>(QuantitySystems.ALL, "Area", "AbsorbedDose", "Dimensionless", "DimensionlessRatio",
+        Length = LengthUnit.Millimetre)]

Tests/TedToolkit.Console/Program.cs

@@ -14,12 +14,17 @@
 using UnitsNet;
 using UnitsNet.Units;
 
-var pi = ERational.FromEDecimal(EDecimal.FromString("3.1415926535897932384626433832795028841971693993751058209749445923"));
-var result = pi * ERational.FromInt32(2);
-var ctx = EContext.ForPrecision(50) // 精度50位
-    .WithExponentRange(-1000, 1000) // 指数在 [-1000, 1000]
-    .WithRounding(ERounding.HalfEven);
-Console.WriteLine(result.ToEDecimal(ctx));
+// var pi = ERational.FromEDecimal(EDecimal.FromString("3.1415926535897932384626433832795028841971693993751058209749445923"));
+// var result = pi * ERational.FromInt32(2);
+// var ctx = EContext.ForPrecision(50) // 精度50位
+//     .WithExponentRange(-1000, 1000) // 指数在 [-1000, 1000]
+//     .WithRounding(ERounding.HalfEven);
+// Console.WriteLine(result.ToEDecimal(ctx));
+
+var rational = ERational.Create(EInteger.FromInt16(1), EInteger.FromInt16(10));
+Console.WriteLine(rational);
+var powered = Pow(rational, 4);
+Console.WriteLine(powered);
 
 return;
 var length = (TedToolkit.Quantities.Length)6.0;
@@ -38,7 +43,18 @@
 var b = ratio.DecibelMicrovolts;
 return;
 
+static ERational Pow(ERational rational, int exponent)
+{
+    if (exponent == 0) return ERational.One;
+    var one = rational;
+    for (var i = 1; i < Math.Abs(exponent); i++)
+    {
+        rational *= one;
+    }
 
+    if (exponent < 0) rational = ERational.One / rational;
+    return rational;
+}
 // unsafe
 // {
 //     double a = 15;

src/analyzers/TedToolkit.Quantities.Analyzer/UnitSystem.cs

@@ -17,7 +17,7 @@ public Unit GetUnit(string key)
 
         var data = collection;
         var allUnits = data.Units.Values.ToArray();
-        var quantityUnits =quantity.Units
+        var quantityUnits = quantity.Units
             .Select(u => data.Units[u]);
         if (unitDictionary.TryGetValue(key, out var unitKey))
         {

src/libraries/TedToolkit.Quantities.Data/Conversion.cs

@@ -42,9 +42,10 @@ public readonly record struct Conversion(ERational Multiplier, ERational Offset)
     private static ERational Pow(ERational rational, int exponent)
     {
         if (exponent == 0) return ERational.One;
-        for (var i = 0; i < Math.Abs(exponent); i++)
+        var one = rational;
+        for (var i = 1; i < Math.Abs(exponent); i++)
         {
-            rational *= rational;
+            rational *= one;
         }
 
         if (exponent < 0) rational = ERational.One / rational;