From 752593a5893f27078570bc4dddd0ea8d31ec6f43 Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Mon, 5 Feb 2024 13:32:35 +0300
Subject: [PATCH] Fix random::normal_distribution: actually use mean & stddev
 instead of always generating N(0,1)

---
 libs/random/include/psemek/random/normal.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libs/random/include/psemek/random/normal.hpp b/libs/random/include/psemek/random/normal.hpp
index 65d8626a..cb761fb1 100644
--- a/libs/random/include/psemek/random/normal.hpp
+++ b/libs/random/include/psemek/random/normal.hpp
@@ -64,8 +64,8 @@ namespace psemek::random
 		T const r = std::sqrt(- 2 * std::log(u1));
 		T const th = 2 * geom::pi * u2;
 
-		T const z1 = r * std::cos(th);
-		T const z2 = r * std::sin(th);
+		T const z1 = mean_ + stddev_ * r * std::cos(th);
+		T const z2 = mean_ + stddev_ * r * std::sin(th);
 
 		cached_ = z2;
 		return z1;