From 14ea7dac4a234b52caba2c71117d9c5027cacb2c Mon Sep 17 00:00:00 2001
From: Thorsten Sommer <mail@tsommer.org>
Date: Sat, 26 Sep 2020 11:57:26 +0200
Subject: [PATCH] Initial

---
 FastRng/Double/Distributions/ChiSquare.cs | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 FastRng/Double/Distributions/ChiSquare.cs

diff --git a/FastRng/Double/Distributions/ChiSquare.cs b/FastRng/Double/Distributions/ChiSquare.cs
new file mode 100644
index 0000000..2a6b568
--- /dev/null
+++ b/FastRng/Double/Distributions/ChiSquare.cs
@@ -0,0 +1,20 @@
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace FastRng.Double.Distributions
+{
+    public sealed class ChiSquare : IDistribution
+    {
+        public IRandom Random { get; set; }
+
+        public double DegreesOfFreedom { get; set; } = 1.0;
+        
+        public async ValueTask<double> GetDistributedValue(CancellationToken token)
+        {
+            if (this.Random == null)
+                return 0.0;
+
+            return await this.Random.NextNumber(new Gamma{ Shape = 0.5 * this.DegreesOfFreedom, Scale = 2.0 }, token);
+        }
+    }
+}
\ No newline at end of file