From 30bb611e4d582f9731873c2090711607ebee203e Mon Sep 17 00:00:00 2001
From: lokalmatador <12415790+lokalmatador@users.noreply.github.com>
Date: Fri, 10 Jul 2020 21:25:42 +0200
Subject: [PATCH] Basic arithmetics (#20212)

* add ef_negate
* add ef_add
* add ef_divide
* add ef_multiply
* add "ef_subtract" by ef_add and negated subtrahend