From 62f16491ea1835dced9da876bff9cb3f56f8b7f6 Mon Sep 17 00:00:00 2001
From: alemuntoni <muntoni.alessandro@gmail.com>
Date: Fri, 18 Sep 2020 16:42:56 +0200
Subject: [PATCH] missing include

---
 vcg/math/perlin_noise.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/vcg/math/perlin_noise.h b/vcg/math/perlin_noise.h
index 917fd394..3ec20ae0 100644
--- a/vcg/math/perlin_noise.h
+++ b/vcg/math/perlin_noise.h
@@ -24,6 +24,8 @@
 #ifndef __VCGLIB_PERLIN_NOISE
 #define __VCGLIB_PERLIN_NOISE
 
+#include <cmath>
+
 namespace vcg
 {
  namespace math {