From b2ad87f966f17bacb36366f9e3bf21c21c31b6f7 Mon Sep 17 00:00:00 2001
From: Kim Alvefur <zash@zash.se>
Date: Wed, 3 Jun 2020 20:17:33 +0200
Subject: util.human.units: Handle lack of math.log(n, base) on Lua 5.1

---
 util/human/units.lua | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/util/human/units.lua b/util/human/units.lua
index 471c82a0..5a083783 100644
--- a/util/human/units.lua
+++ b/util/human/units.lua
@@ -6,6 +6,14 @@ local math_max = math.max;
 local math_min = math.min;
 local unpack = table.unpack or unpack; --luacheck: ignore 113
 
+if math_log(10, 10) ~= 1 then
+	-- Lua 5.1 COMPAT
+	local log10 = math.log10;
+	function math_log(n, base)
+		return log10(n) / log10(base);
+	end
+end
+
 local large = {
 	"k", 1000,
 	"M", 1000000,
-- 
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