1/*
2 * Copyright (C) 2011 Apple Inc. All rights reserved.
3 * Copyright (C) 2011 Google Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#ifndef Float64Array_h
28#define Float64Array_h
29
30#include "TypedArrayBase.h"
31#include <wtf/MathExtras.h>
32
33namespace WebCore {
34
35class Float64Array : public TypedArrayBase<double> {
36public:
37    static PassRefPtr<Float64Array> create(unsigned length);
38    static PassRefPtr<Float64Array> create(const double* array, unsigned length);
39    static PassRefPtr<Float64Array> create(PassRefPtr<ArrayBuffer>, unsigned byteOffset, unsigned length);
40
41    using TypedArrayBase<double>::set;
42
43    void set(unsigned index, double value)
44    {
45        if (index >= TypedArrayBase<double>::m_length)
46            return;
47        TypedArrayBase<double>::data()[index] = static_cast<double>(value);
48    }
49
50    // Invoked by the indexed getter. Does not perform range checks; caller
51    // is responsible for doing so and returning undefined as necessary.
52    double item(unsigned index) const
53    {
54        ASSERT(index < TypedArrayBase<double>::m_length);
55        double result = TypedArrayBase<double>::data()[index];
56        return result;
57    }
58
59    PassRefPtr<Float64Array> subarray(int start) const;
60    PassRefPtr<Float64Array> subarray(int start, int end) const;
61
62private:
63    Float64Array(PassRefPtr<ArrayBuffer>,
64                 unsigned byteOffset,
65                 unsigned length);
66    // Make constructor visible to superclass.
67    friend class TypedArrayBase<double>;
68
69    // Overridden from ArrayBufferView.
70    virtual bool isDoubleArray() const { return true; }
71};
72
73} // namespace WebCore
74
75#endif // Float64Array_h
76