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/*
* Copyright (C) 2009 Apple Inc. All rights reserved.
* Copyright (C) 2009 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 FloatArray_h
#define FloatArray_h
#include "TypedArrayBase.h"
#include <wtf/MathExtras.h>
namespace WebCore {
class FloatArray : public TypedArrayBase<float> {
public:
static PassRefPtr<FloatArray> create(unsigned length);
static PassRefPtr<FloatArray> create(float* array, unsigned length);
static PassRefPtr<FloatArray> create(PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset, unsigned length);
using TypedArrayBase<float>::set;
void set(unsigned index, double value)
{
if (index >= TypedArrayBase<float>::m_length)
return;
if (isnan(value)) // Clamp NaN to 0
value = 0;
TypedArrayBase<float>::data()[index] = static_cast<float>(value);
}
// Invoked by the indexed getter. Does not perform range checks; caller
// is responsible for doing so and returning undefined as necessary.
float item(unsigned index) const
{
ASSERT(index < TypedArrayBase<float>::m_length);
float result = TypedArrayBase<float>::data()[index];
if (isnan(result)) {
// Clamp NaN to 0
result = 0;
}
return result;
}
private:
FloatArray(PassRefPtr<ArrayBuffer> buffer,
unsigned byteOffset,
unsigned length);
// Make constructor visible to superclass.
friend class TypedArrayBase<float>;
// Overridden from ArrayBufferView.
virtual bool isFloatArray() const { return true; }
virtual PassRefPtr<ArrayBufferView> slice(int start, int end) const;
};
} // namespace WebCore
#endif // FloatArray_h
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