1// Copyright 2018 the V8 project authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef V8_OBJECTS_HEAP_NUMBER_INL_H_
6#define V8_OBJECTS_HEAP_NUMBER_INL_H_
7
8#include "src/objects/heap-number.h"
9
10#include "src/objects/objects-inl.h"
11#include "src/objects/primitive-heap-object-inl.h"
12
13// Has to be the last include (doesn't have include guards):
14#include "src/objects/object-macros.h"
15
16namespace v8 {
17namespace internal {
18
19#include "torque-generated/src/objects/heap-number-tq-inl.inc"
20
21TQ_OBJECT_CONSTRUCTORS_IMPL(HeapNumber)
22
23uint64_t HeapNumber::value_as_bits(RelaxedLoadTag) const {
24  uint64_t value;
25  base::Relaxed_Memcpy(
26      reinterpret_cast<base::Atomic8*>(&value),
27      reinterpret_cast<base::Atomic8*>(field_address(kValueOffset)),
28      sizeof(uint64_t));
29  // Bug(v8:8875): HeapNumber's double may be unaligned.
30  return value;
31}
32
33void HeapNumber::set_value_as_bits(uint64_t bits, RelaxedStoreTag) {
34  base::Relaxed_Memcpy(
35      reinterpret_cast<base::Atomic8*>(field_address(kValueOffset)),
36      reinterpret_cast<base::Atomic8*>(&bits), sizeof(uint64_t));
37}
38
39int HeapNumber::get_exponent() {
40  return ((ReadField<int>(kExponentOffset) & kExponentMask) >> kExponentShift) -
41         kExponentBias;
42}
43
44int HeapNumber::get_sign() {
45  return ReadField<int>(kExponentOffset) & kSignMask;
46}
47
48}  // namespace internal
49}  // namespace v8
50
51#include "src/objects/object-macros-undef.h"
52
53#endif  // V8_OBJECTS_HEAP_NUMBER_INL_H_
54