From 911cadb864b84b4c18214e594f917a8c580a32bd Mon Sep 17 00:00:00 2001
From: Calvin Kim <ccychc@gmail.com>
Date: Thu, 18 Jul 2019 02:46:41 +0900
Subject: [PATCH] Update finger_metrics.h

Fix for the error thrown for

include/gestures/include/finger_metrics.h" In member function 'float gestures::Vecotr2::Mag() const': include/gestures/include/finger_metrics.h:38:12: error: 'sqrtf' was not declared in this scope
  return sqrtf(MagSq());
---
 include/gestures/include/finger_metrics.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/gestures/include/finger_metrics.h b/include/gestures/include/finger_metrics.h
index 5440e19..9ae2910 100644
--- a/include/gestures/include/finger_metrics.h
+++ b/include/gestures/include/finger_metrics.h
@@ -5,6 +5,7 @@
 #ifndef GESTURES_FINGER_METRICS_H_
 #define GESTURES_FINGER_METRICS_H_
 
+#include <math.h>
 #include "gestures/include/gestures.h"
 #include "gestures/include/prop_registry.h"
 #include "gestures/include/vector.h"