From a480f4712f5e7cbcb86a46cc31c594c478d86ef1 Mon Sep 17 00:00:00 2001
From: Dennis Eichhorn <spl1nes.com@googlemail.com>
Date: Fri, 16 Aug 2024 04:09:29 +0200
Subject: [PATCH] added dice roll

---
 Math/Stochastic/Distribution/GeometricDistribution.php | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Math/Stochastic/Distribution/GeometricDistribution.php b/Math/Stochastic/Distribution/GeometricDistribution.php
index df96ff874..fa5b8a7a4 100755
--- a/Math/Stochastic/Distribution/GeometricDistribution.php
+++ b/Math/Stochastic/Distribution/GeometricDistribution.php
@@ -27,6 +27,8 @@ final class GeometricDistribution
     /**
      * Constructor.
      *
+     * Example: dice roll
+     *
      * @since 1.0.0
      * @codeCoverageIgnore
      */
@@ -34,6 +36,14 @@ final class GeometricDistribution
     {
     }
 
+    /**
+     * How often to roll to get a specific value with at least percent chance
+     */
+    public static function getHowOften(float $p, float $percent) : float
+    {
+        return log(1.0 - $percent) / log(1 - $p);
+    }
+
     /**
      * Get probability mass function.
      *