1 // @generated Code generated by gen-atomicwrapper.
2 3 // Copyright (c) 2020-2023 Uber Technologies, Inc.
4 //
5 // Permission is hereby granted, free of charge, to any person obtaining a copy
6 // of this software and associated documentation files (the "Software"), to deal
7 // in the Software without restriction, including without limitation the rights
8 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 // copies of the Software, and to permit persons to whom the Software is
10 // furnished to do so, subject to the following conditions:
11 //
12 // The above copyright notice and this permission notice shall be included in
13 // all copies or substantial portions of the Software.
14 //
15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
21 // THE SOFTWARE.
22 23 package atomic
24 25 import (
26 "encoding/json"
27 "math"
28 )
29 30 // Float32 is an atomic type-safe wrapper for float32 values.
31 type Float32 struct {
32 _ nocmp // disallow non-atomic comparison
33 34 v Uint32
35 }
36 37 var _zeroFloat32 float32
38 39 // NewFloat32 creates a new Float32.
40 func NewFloat32(val float32) *Float32 {
41 x := &Float32{}
42 if val != _zeroFloat32 {
43 x.Store(val)
44 }
45 return x
46 }
47 48 // Load atomically loads the wrapped float32.
49 func (x *Float32) Load() float32 {
50 return math.Float32frombits(x.v.Load())
51 }
52 53 // Store atomically stores the passed float32.
54 func (x *Float32) Store(val float32) {
55 x.v.Store(math.Float32bits(val))
56 }
57 58 // Swap atomically stores the given float32 and returns the old
59 // value.
60 func (x *Float32) Swap(val float32) (old float32) {
61 return math.Float32frombits(x.v.Swap(math.Float32bits(val)))
62 }
63 64 // MarshalJSON encodes the wrapped float32 into JSON.
65 func (x *Float32) MarshalJSON() ([]byte, error) {
66 return json.Marshal(x.Load())
67 }
68 69 // UnmarshalJSON decodes a float32 from JSON.
70 func (x *Float32) UnmarshalJSON(b []byte) error {
71 var v float32
72 if err := json.Unmarshal(b, &v); err != nil {
73 return err
74 }
75 x.Store(v)
76 return nil
77 }
78