From a2c780029041b2eb3abfbe04ba51d442461335bf Mon Sep 17 00:00:00 2001
From: Max Cahill <1bardesign@gmail.com>
Date: Tue, 29 Jun 2021 14:44:09 +1000
Subject: [PATCH] Note about branchless or abs-based mathx.sign

---
 mathx.lua | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mathx.lua b/mathx.lua
index f109e94..082c99e 100644
--- a/mathx.lua
+++ b/mathx.lua
@@ -46,6 +46,7 @@ function mathx.to_precision(v, decimal_points)
 end
 
 --0, 1, -1 sign of a scalar
+--todo: investigate if a branchless or `/abs` approach is faster in general case
 function mathx.sign(v)
 	if v < 0 then return -1 end
 	if v > 0 then return 1 end