Use -fno-inline for debug builds & small cleanups

Change-Id: I24f91d7130f2203715b868d4a82510660939886f
diff --git a/native/jni/src/proximity_info.cpp b/native/jni/src/proximity_info.cpp
index 8ad9c77..9b99554 100644
--- a/native/jni/src/proximity_info.cpp
+++ b/native/jni/src/proximity_info.cpp
@@ -144,7 +144,7 @@
     const float touchX = static_cast<float>(x);
     const float touchY = static_cast<float>(y);
     const float keyWidth = static_cast<float>(getMostCommonKeyWidth());
-    return getNormalizedSquaredDistanceFloat(centerX, centerY, touchX, touchY, keyWidth);
+    return getSquaredDistanceFloat(centerX, centerY, touchX, touchY) / SQUARE_FLOAT(keyWidth);
 }
 
 int ProximityInfo::squaredDistanceToEdge(const int keyId, const int x, const int y) const {