From: Jonatan Schlag <jonatan.schlag@ipfire.org>
Date: Fri, 9 Jun 2017 10:17:27 +0000 (+0200)
Subject: util: new function abs
X-Git-Tag: 009~215
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a24cff8f147eafca919f5110936d33cd5e509143;p=network.git

util: new function abs

This function return the absolute value of a given number.

Signed-off-by: Jonatan Schlag <jonatan.schlag@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/functions/functions.util b/src/functions/functions.util
index b7e35c91..37feb73b 100644
--- a/src/functions/functions.util
+++ b/src/functions/functions.util
@@ -268,6 +268,16 @@ uuid() {
 	echo $(</proc/sys/kernel/random/uuid)
 }
 
+abs() {
+	local val=${1}
+
+	if [ ${val} -lt 0 ]; then
+		(( val *= -1 ))
+	fi
+
+	echo ${val}
+}
+
 rand() {
 	local uuid="$(uuid)"
 	echo "${uuid//-/}"