/* * Copyright (C) 2010 Apple Inc. All rights reserved. * Copyright (c) 2010, Google Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef IntegralTypedArrayBase_h #define IntegralTypedArrayBase_h #include "TypedArrayBase.h" #include <limits> #include <wtf/MathExtras.h> // Base class for all WebGL<T>Array types holding integral // (non-floating-point) values. namespace JSC { template <typename T> class IntegralTypedArrayBase : public TypedArrayBase<T> { public: void set(unsigned index, double value) { if (index >= TypedArrayBase<T>::m_length) return; if (std::isnan(value)) // Clamp NaN to 0 value = 0; // The double cast is necessary to get the correct wrapping // for out-of-range values with Int32Array and Uint32Array. TypedArrayBase<T>::data()[index] = static_cast<T>(static_cast<int64_t>(value)); } protected: IntegralTypedArrayBase(PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset, unsigned length) : TypedArrayBase<T>(buffer, byteOffset, length) { } }; } // namespace JSC #endif // IntegralTypedArrayBase_h