Move utility functions to utils file

Summary: Move utility functions to utils file

Reviewed By: emilsjolander

Differential Revision: D6682933

fbshipit-source-id: 0fd90fdaf5ca4f9b7a11cbd15d8c54c7d0ce8a03

yoga/Utils.cpp

@@ -0,0 +1,23 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#include "Utils.h"
+
+bool YGValueEqual(const YGValue a, const YGValue b) {
+  if (a.unit != b.unit) {
+    return false;
+  }
+
+  if (a.unit == YGUnitUndefined ||
+      (std::isnan(a.value) && std::isnan(b.value))) {
+    return true;
+  }
+
+  return fabs(a.value - b.value) < 0.0001f;
+}