spatial: fix comparison

src/fwd.hpp

 //
-// Copyright (c) 2018-2019 CNRS INRIA
+// Copyright (c) 2018-2020 CNRS INRIA
 //
 
 #ifndef __pinocchio_fwd_hpp__
@@ -14,6 +14,7 @@ namespace pinocchio {}
 #include "pinocchio/config.hpp"
 
 #include "pinocchio/utils/helpers.hpp"
+#include "pinocchio/utils/cast.hpp"
 
 #include "pinocchio/container/boost-container-limits.hpp"
 

src/spatial/se3-tpl.hpp

@@ -289,7 +289,7 @@ namespace pinocchio
       
       // During the cast, it may appear that the matrix is not normalized correctly.
       // Force the normalization of the rotation part of the matrix.
-      if(static_cast<NewScalar>(Eigen::NumTraits<Scalar>::epsilon()) > Eigen::NumTraits<NewScalar>::epsilon())
+      if(pinocchio::cast<NewScalar>(Eigen::NumTraits<Scalar>::epsilon()) > Eigen::NumTraits<NewScalar>::epsilon())
         res.normalize();
       return res;
     }