float16.h

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// Copyright 2024 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#ifndef V8_WASM_FLOAT16_H_
#define V8_WASM_FLOAT16_H_
 
#include "src/base/memory.h"
#include "third_party/fp16/src/include/fp16.h"
 
namespace v8 {
namespace internal {
 
class Float16 {
 public:
  Float16() : bits_(0) {}
 
  static Float16 Read(base::Address source) {
    return Float16(base::ReadUnalignedValue<uint16_t>(source));
  }
 
  void Write(base::Address destination) {
    return base::WriteUnalignedValue<uint16_t>(destination, bits_);
  }
 
  static Float16 FromFloat32(float f32) {
    return Float16(fp16_ieee_from_fp32_value(f32));
  }
 
  float ToFloat32() const { return fp16_ieee_to_fp32_value(bits_); }
 
 private:
  explicit Float16(uint16_t raw_bits) : bits_(raw_bits) {}
 
  uint16_t bits_;
};
 
static_assert(sizeof(Float16) == sizeof(uint16_t));
 
}  // namespace internal
}  // namespace v8
 
#endif  // V8_WASM_FLOAT16_H_