From 6529abc176795b19684d07c0f07f389d3f125f93 Mon Sep 17 00:00:00 2001
From: Chow Loong Jin <hyperair@debian.org>
Date: Sun, 6 Mar 2016 17:44:39 +0800
Subject: [PATCH] Don't use equality comparisons for floats

This fixes an issue where F0 moves arise from 0-width (or 0 layer
height?) support material segments when using autospeed.

Fixes: #3261
---
 lib/Slic3r/Print/GCode.pm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/Slic3r/Print/GCode.pm b/lib/Slic3r/Print/GCode.pm
index e3022fef05..0b67fe2dcd 100644
--- a/lib/Slic3r/Print/GCode.pm
+++ b/lib/Slic3r/Print/GCode.pm
@@ -75,7 +75,8 @@ sub BUILD {
                     }
                 }
             }
-            @mm3_per_mm = grep $_ != 0, @mm3_per_mm;
+            # filter out 0-width segments
+            @mm3_per_mm = grep $_ < 0.000001, @mm3_per_mm;
             if (@mm3_per_mm) {
                 my $min_mm3_per_mm = min(@mm3_per_mm);
                 # In order to honor max_print_speed we need to find a target volumetric