mfbt/FloatingPoint.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 /* Implementations of FloatingPoint functions */
   7
   8 #include "mozilla/FloatingPoint.h"
   9
  10 namespace mozilla {
  11
  12 bool
  13 IsFloat32Representable(double x)
  14 {
  15     float asFloat = static_cast<float>(x);
  16     double floatAsDouble = static_cast<double>(asFloat);
  17     return floatAsDouble == x;
  18 }
  19
  20 } /* namespace mozilla */