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/*
* 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 COMPUTER, 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 COMPUTER, 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 <wtf/TypedArrayBase.h>
#include <limits>
#include <wtf/MathExtras.h>
// Base class for all WebGL<T>Array types holding integral
// (non-floating-point) values.
namespace WTF {
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 WTF
using WTF::IntegralTypedArrayBase;
#endif // IntegralTypedArrayBase_h
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