1 files changed, 21 insertions, 0 deletions
diff --git a/mfbt/FloatingPoint.cpp b/mfbt/FloatingPoint.cpp
new file mode 100644
index 0000000000..1ccae46002
--- /dev/null
+++ b/mfbt/FloatingPoint.cpp
@@ -0,0 +1,21 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* Implementations of FloatingPoint functions */
+
+#include "mozilla/FloatingPoint.h"
+
+namespace mozilla {
+
+bool
+IsFloat32Representable(double aFloat32)
+{
+  float asFloat = static_cast<float>(aFloat32);
+  double floatAsDouble = static_cast<double>(asFloat);
+  return floatAsDouble == aFloat32;
+}
+
+} /* namespace mozilla */