From faa0bde50d088f5dc05b69fd0583fb08fedaa3ae Mon Sep 17 00:00:00 2001
From: Andy CA6JAU <juribeparada@gmail.com>
Date: Sat, 3 Mar 2018 17:14:02 -0300
Subject: [PATCH] Fix compilation error with abs() function using some
 compilers

---
 NXDNConvolution.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/NXDNConvolution.cpp b/NXDNConvolution.cpp
index 2784a42..d74fe2a 100755
--- a/NXDNConvolution.cpp
+++ b/NXDNConvolution.cpp
@@ -21,7 +21,7 @@
 #include <cstdio>
 #include <cassert>
 #include <cstring>
-#include <cmath>
+#include <cstdlib>
 
 const unsigned char BIT_MASK_TABLE[] = {0x80U, 0x40U, 0x20U, 0x10U, 0x08U, 0x04U, 0x02U, 0x01U};