proper rounding in bitcoin price

diff --git a/.config/awesome/rc.lua b/.config/awesome/rc.lua
index 61460670ba0264c25c153633a9aed35a31b9868e..ac0676b9c4604faf30c49f9f8f76d543a81eb0a6 100644 (file)
--- 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