Updated program

Author: MrMatthewLayton

OnixLabs.Playground/Program.cs

@@ -12,64 +12,11 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-using System;
-
 namespace OnixLabs.Playground;
 
 internal static class Program
 {
     private static void Main()
     {
-        decimal value = 100.13m;
-        decimal round = value.SetScale(2);
-
-        Console.WriteLine(round);
-    }
-
-    public static decimal SetScale(this decimal value, int scale)
-    {
-        Require(scale >= 0, "Scale must be greater than, or equal to zero.");
-
-        // Count actual decimal places
-        int actualScale = GetDecimalPlaces(value);
-
-        if (actualScale == scale)
-        {
-            return value;
-        }
-
-        if (actualScale < scale)
-        {
-            // Pad with zeroes by scaling and descaling
-            decimal factor = Pow10(scale - actualScale);
-            return value * factor / factor;
-        }
-
-        else // actualScale > scale
-        {
-            // Check if the digits beyond the desired scale are zero
-            decimal factor = Pow10(actualScale - scale);
-            decimal remainder = (value * factor) % 1;
-
-            if (remainder != 0)
-                throw new InvalidOperationException($"Cannot reduce scale without losing precision: {value}");
-
-            return Math.Truncate(value * Pow10(scale)) / Pow10(scale);
-        }
-    }
-
-    private static int GetDecimalPlaces(decimal value)
-    {
-        int[] bits = decimal.GetBits(value);
-        byte scale = (byte)((bits[3] >> 16) & 0x7F);
-        return scale;
-    }
-
-    private static decimal Pow10(int exp)
-    {
-        decimal result = 1m;
-        for (int i = 0; i < exp; i++)
-            result *= 10;
-        return result;
     }
 }