GoCollections/lang/atomic/Float32.go
2022-12-03 19:13:29 +08:00

90 lines
1.7 KiB
Go

/*
* Copyright (c) 2022 tursom. All rights reserved.
* Use of this source code is governed by a GPL-3
* license that can be found in the LICENSE file.
*/
package atomic
import (
"strconv"
"sync/atomic"
"unsafe"
"github.com/tursom/GoCollections/lang"
)
type Float32 float32
func (v *Float32) P() *float32 {
return (*float32)(v)
}
func (v *Float32) pint32() *int32 {
return (*int32)(unsafe.Pointer(v))
}
func (v *Float32) Load() (val float32) {
return intToFloat32(atomic.LoadInt32(v.pint32()))
}
func (v *Float32) Store(val float32) {
atomic.StoreInt32(v.pint32(), floatToInt32(val))
}
func (v *Float32) Swap(new float32) (old float32) {
i := atomic.SwapInt32(v.pint32(), floatToInt32(new))
return intToFloat32(i)
}
func (v *Float32) CompareAndSwap(old, new float32) (swapped bool) {
return atomic.CompareAndSwapInt32(v.pint32(), floatToInt32(old), floatToInt32(new))
}
func (v *Float32) Add(f float32) (new float32) {
old := v.Load()
new = old + f
for !v.CompareAndSwap(old, new) {
old = v.Load()
new = old + f
}
return new
}
func (v *Float32) String() string {
return strconv.FormatFloat(float64(*v), 'e', -1, 32)
}
func (v *Float32) AsObject() lang.Object {
return v
}
func (v *Float32) Equals(o lang.Object) bool {
return lang.EqualsFloat32(v, o)
}
func (v *Float32) HashCode() int32 {
return lang.Hash32(v)
}
func (v *Float32) ToInt64() lang.Int64 {
return lang.Int64(*v)
}
func (v *Float32) ToUInt64() lang.UInt64 {
return lang.UInt64(*v)
}
func (v *Float32) ToFloat64() lang.Float64 {
return lang.Float64(*v)
}
func floatToInt32(f float32) int32 {
return *(*int32)(unsafe.Pointer(&f))
}
func intToFloat32(f int32) float32 {
return *(*float32)(unsafe.Pointer(&f))
}