From 8f38b06c60a4bf028d931f7e2c9fc45b70cf7bd7 Mon Sep 17 00:00:00 2001
From: gingerBill <bill@gingerbill.org>
Date: Thu, 10 Sep 2020 15:42:07 +0100
Subject: [PATCH] Add sanity conversion for rand.norm_float64

---
 core/math/rand/normal.odin | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/core/math/rand/normal.odin b/core/math/rand/normal.odin
index 2785abd9d..653ca6c3b 100644
--- a/core/math/rand/normal.odin
+++ b/core/math/rand/normal.odin
@@ -116,6 +116,12 @@ norm_float64 :: proc(r: ^Rand = nil) -> f64 {
 		0.008624485, 0.005548995, 0.0026696292,
 	};
 
+	r := r;
+	if r == nil {
+		// NOTE(bill, 2020-09-07): Do this so that people can
+		// enforce the global random state if necessary with `nil`
+		r = &global_rand;
+	}
 
 	for {
 		j := i32(uint32(r));