third_party/WebKit/Source/wtf/Float32Array.h

   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     static inline PassRefPtr<Float32Array> createOrNull(unsigned length);
  42
  43     using TypedArrayBase<float>::set;
  44
  45     void set(unsigned index, double value)
  46     {
  47         if (index >= TypedArrayBase<float>::m_length)
  48             return;
  49         TypedArrayBase<float>::data()[index] = static_cast<float>(value);
  50     }
  51
  52     ViewType type() const override
  53     {
  54         return TypeFloat32;
  55     }
  56
  57 private:
  58     inline Float32Array(PassRefPtr<ArrayBuffer>,
  59                     unsigned byteOffset,
  60                     unsigned length);
  61     // Make constructor visible to superclass.
  62     friend class TypedArrayBase<float>;
  63 };
  64
  65 PassRefPtr<Float32Array> Float32Array::create(unsigned length)
  66 {
  67     return TypedArrayBase<float>::create<Float32Array>(length);
  68 }
  69
  70 PassRefPtr<Float32Array> Float32Array::create(const float* array, unsigned length)
  71 {
  72     return TypedArrayBase<float>::create<Float32Array>(array, length);
  73 }
  74
  75 PassRefPtr<Float32Array> Float32Array::create(PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset, unsigned length)
  76 {
  77     return TypedArrayBase<float>::create<Float32Array>(buffer, byteOffset, length);
  78 }
  79
  80 PassRefPtr<Float32Array> Float32Array::createOrNull(unsigned length)
  81 {
  82     return TypedArrayBase<float>::createOrNull<Float32Array>(length);
  83 }
  84
  85 Float32Array::Float32Array(PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset, unsigned length)
  86     : TypedArrayBase<float>(buffer, byteOffset, length)
  87 {
  88 }
  89
  90 } // namespace WTF
  91
  92 using WTF::Float32Array;
  93
  94 #endif // Float32Array_h