From: martin f. krafft <madduck@madduck.net>
Date: Tue, 17 Jan 2017 03:55:42 +0000 (+1100)
Subject: proper rounding in bitcoin price
X-Git-Url: https://git.madduck.net/etc/awesome.git/commitdiff_plain/c74cd69b97199337dbc946ceb568e9c3f48cd216

proper rounding in bitcoin price
---

diff --git a/.config/awesome/rc.lua b/.config/awesome/rc.lua
index 6146067..ac0676b 100644
--- a/.config/awesome/rc.lua
+++ b/.config/awesome/rc.lua
@@ -12,6 +12,7 @@ local naughty = require("naughty")
 local menubar = require("menubar")
 local hotkeys_popup = require("awful.hotkeys_popup").widget
 local lain = require("lain")
+local math = require("math")
 -- }}}
 
 -- {{{ Error handling
@@ -131,11 +132,11 @@ local lain_bat = lain.widgets.bat({
     end,
 })
 
-local function poloniex_price(output, pair, accuracy)
+local function poloniex_price(output, pair, prec)
     local xc, pos, err = require("lain.util").dkjson.decode(output, 1, nil)
-    if not accuracy then accuracy = 4 end
+    if not prec then prec = 4 end
     val = (xc and xc[pair]["last"]) or 0
-    val = val - val % (1/(10^accuracy))
+    val = math.floor(val*10^prec+0.5)/10^prec
     return (not err and val) or "n/a"
 end