1 files changed, 30 insertions, 0 deletions
diff --git a/extern/mantaflow/helper/util/vectorbase.h b/extern/mantaflow/helper/util/vectorbase.h
index 9ccf445f42c..9b4d9c83f0b 100644
--- a/extern/mantaflow/helper/util/vectorbase.h
+++ b/extern/mantaflow/helper/util/vectorbase.h
@@ -439,6 +439,36 @@ inline Real normSquare(const int v)
   return square(v);
 }
 
+//! Compute sum of all components, allow use of int, Real too
+template<class S> inline S sum(const S v)
+{
+  return v;
+}
+template<class S> inline S sum(const Vector3D<S> &v)
+{
+  return v.x + v.y + v.z;
+}
+
+//! Get absolute representation of vector, allow use of int, Real too
+inline Real abs(const Real v)
+{
+  return std::fabs(v);
+}
+inline int abs(const int v)
+{
+  return std::abs(v);
+}
+
+template<class S> inline Vector3D<S> abs(const Vector3D<S> &v)
+{
+  Vector3D<S> cp(v.x, v.y, v.z);
+  for (int i = 0; i < 3; ++i) {
+    if (cp[i] < 0)
+      cp[i] *= (-1.0);
+  }
+  return cp;
+}
+
 //! Returns a normalized vector
 template<class S> inline Vector3D<S> getNormalized(const Vector3D<S> &v)
 {