1 files changed, 6 insertions, 0 deletions
diff --git a/src/math/functions.h b/src/math/functions.h
index b44a4e5..16de778 100644
--- a/src/math/functions.h
+++ b/src/math/functions.h
@@ -55,6 +55,12 @@ inline void clamp(float &value, float min=0.0f, float max=1.0f)
 	if (value < min) value = min; else if (value > max) value = max;
 }
 
+/// return the absolute value of a float
+inline float absf(float f)
+{
+	if (f >0) return f; else return -f;
+}
+
 } // namespace math
 
 #endif // __INCLUDED_MATH_FUNCTIONS_H__