Improved constants for Poundal force unit and fixed two tests after the precision increased.

Author: angularsen

Src/UnitsNet/Force.cs

@@ -68,7 +68,7 @@ public double PoundForce
 
         public double Poundal
         {
-            get { return 7.2330*Newtons; }
+            get { return 7.23301 * Newtons; }
         }
 
         #region Static 
@@ -85,7 +85,7 @@ public static Force FromDyne(double dyn)
 
         public static Force FromPoundal(double pdl)
         {
-            return new Force(0.138255*pdl);
+            return new Force(0.13825502798973041652092282466083*pdl);
         }
 
         public static Force FromPoundForce(double lbf)

Tests/ForceTests.cs

@@ -18,7 +18,7 @@ public void NewtonToForceUnits()
             Assert.AreEqual(0.10197, newton.KilogramForce, Delta);
             Assert.AreEqual(0.10197, newton.KiloPonds, Delta);
             Assert.AreEqual(0.22481, newton.PoundForce, Delta);
-            Assert.AreEqual(7.2330, newton.Poundal, Delta);
+            Assert.AreEqual(7.23301, newton.Poundal, Delta);
         }
 
         [Test]

Tests/UnitConverterTests.cs

@@ -85,7 +85,7 @@ public void NewtonToForceUnits()
             Assert.AreEqual(0.10197, UnitConverter.Convert(1, Unit.Newton, Unit.KilogramForce), Delta);
             Assert.AreEqual(0.10197, UnitConverter.Convert(1, Unit.Newton, Unit.KiloPond), Delta);
             Assert.AreEqual(0.22481, UnitConverter.Convert(1, Unit.Newton, Unit.PoundForce), Delta);
-            Assert.AreEqual(7.2330, UnitConverter.Convert(1, Unit.Newton, Unit.Poundal), Delta);
+            Assert.AreEqual(7.23301, UnitConverter.Convert(1, Unit.Newton, Unit.Poundal), Delta);
         }
 
         [Test]