1 /*
2 * Copyright (C) 2009 Apple Inc. All rights reserved.
3 * Copyright (C) 2009 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 Float32Array_h
28 #define Float32Array_h
29
30 #include "wtf/TypedArrayBase.h"
31 #include "wtf/MathExtras.h"
32
33 namespace WTF {
34
35 class Float32Array final : public TypedArrayBase<float> {
36 public:
37 static inline PassRefPtr<Float32Array> create(unsigned length);
38 static inline PassRefPtr<Float32Array> create(const float* array, unsigned length);
39 static inline PassRefPtr<Float32Array> create(PassRefPtr<ArrayBuffer>, unsigned byteOffset, unsigned length);
40
41 // Should only be used when it is known the entire array will be filled. Do
42 // not return these results directly to JavaScript without filling first.
43 static inline PassRefPtr<Float32Array> createUninitialized(unsigned length);
44
45 using TypedArrayBase<float>::set;
46
set(unsigned index,double value)47 void set(unsigned index, double value)
48 {
49 if (index >= TypedArrayBase<float>::m_length)
50 return;
51 TypedArrayBase<float>::data()[index] = static_cast<float>(value);
52 }
53
54 inline PassRefPtr<Float32Array> subarray(int start) const;
55 inline PassRefPtr<Float32Array> subarray(int start, int end) const;
56
type()57 virtual ViewType type() const override
58 {
59 return TypeFloat32;
60 }
61
62 private:
63 inline Float32Array(PassRefPtr<ArrayBuffer>,
64 unsigned byteOffset,
65 unsigned length);
66 // Make constructor visible to superclass.
67 friend class TypedArrayBase<float>;
68 };
69
create(unsigned length)70 PassRefPtr<Float32Array> Float32Array::create(unsigned length)
71 {
72 return TypedArrayBase<float>::create<Float32Array>(length);
73 }
74
create(const float * array,unsigned length)75 PassRefPtr<Float32Array> Float32Array::create(const float* array, unsigned length)
76 {
77 return TypedArrayBase<float>::create<Float32Array>(array, length);
78 }
79
create(PassRefPtr<ArrayBuffer> buffer,unsigned byteOffset,unsigned length)80 PassRefPtr<Float32Array> Float32Array::create(PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset, unsigned length)
81 {
82 return TypedArrayBase<float>::create<Float32Array>(buffer, byteOffset, length);
83 }
84
createUninitialized(unsigned length)85 PassRefPtr<Float32Array> Float32Array::createUninitialized(unsigned length)
86 {
87 return TypedArrayBase<float>::createUninitialized<Float32Array>(length);
88 }
89
Float32Array(PassRefPtr<ArrayBuffer> buffer,unsigned byteOffset,unsigned length)90 Float32Array::Float32Array(PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset, unsigned length)
91 : TypedArrayBase<float>(buffer, byteOffset, length)
92 {
93 }
94
subarray(int start)95 PassRefPtr<Float32Array> Float32Array::subarray(int start) const
96 {
97 return subarray(start, length());
98 }
99
subarray(int start,int end)100 PassRefPtr<Float32Array> Float32Array::subarray(int start, int end) const
101 {
102 return subarrayImpl<Float32Array>(start, end);
103 }
104
105 } // namespace WTF
106
107 using WTF::Float32Array;
108
109 #endif // Float32Array_h
110