From 8004153b6581cc6105aeab6347085472461de83a Mon Sep 17 00:00:00 2001
From: Tom Kazimiers <tom@voodoo-arts.net>
Date: Wed, 28 Aug 2019 22:13:06 -0400
Subject: [PATCH] Fix display of negative values

It seems like the code for writing out numbers couldn't handle negative
numbers well. For instance, rendering -99,99 would result in -99,-9-9.
This is fixed now by explicitly handling negative numbers slightly
differently. There is possibly a more elegant version, but this is
simple seems to fix it.

Fixes tomka/rechnung#8
---
 rechnung.dtx | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rechnung.dtx b/rechnung.dtx
index 009f550..4fcfb79 100644
--- a/rechnung.dtx
+++ b/rechnung.dtx
@@ -623,6 +623,9 @@
   \@tempcntb\@tempcnta
   \divide\@tempcnta100 \the\@tempcnta,%
   \multiply\@tempcnta100\advance\@tempcntb-\@tempcnta
+  \ifnum#1<0
+    \multiply\@tempcntb-1
+  \fi
   \@tempcnta\@tempcntb\divide\@tempcnta10 \the\@tempcnta
   \multiply\@tempcnta10\advance\@tempcntb-\@tempcnta
   \the\@tempcntb