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ClearScript/ClearScript/Util/BitwiseHelpers.cs at master · tlecomte/ClearScript · GitHub
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BitwiseHelpers.cs
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.
using
System
;
using
System
.
Net
;
namespace
Microsoft
.
ClearScript
.
Util
{
internal
static
class
BitwiseHelpers
{
#region bitwise operations
public
static
byte
And
(
this
byte
value
,
byte
mask
)
{
var
tempValue
=
value
;
tempValue
&=
mask
;
return
tempValue
;
}
public
static
byte
Or
(
this
byte
value
,
byte
mask
)
{
var
tempValue
=
value
;
tempValue
|=
mask
;
return
tempValue
;
}
public
static
byte
Xor
(
this
byte
value
,
byte
mask
)
{
var
tempValue
=
value
;
tempValue
^=
mask
;
return
tempValue
;
}
public
static
bool
Has
(
this
byte
value
,
byte
mask
)
{
return
value
.
And
(
mask
)
!=
0
;
}
public
static
bool
HasAll
(
this
byte
value
,
byte
mask
)
{
return
value
.
And
(
mask
)
==
mask
;
}
#endregion
#region signed/unsigned conversion
public
static
short
ToSigned
(
this
ushort
value
)
{
return
BitConverter
.
ToInt16
(
BitConverter
.
GetBytes
(
value
)
,
0
)
;
}
public
static
int
ToSigned
(
this
uint
value
)
{
return
BitConverter
.
ToInt32
(
BitConverter
.
GetBytes
(
value
)
,
0
)
;
}
public
static
long
ToSigned
(
this
ulong
value
)
{
return
BitConverter
.
ToInt64
(
BitConverter
.
GetBytes
(
value
)
,
0
)
;
}
public
static
ushort
ToUnsigned
(
this
short
value
)
{
return
BitConverter
.
ToUInt16
(
BitConverter
.
GetBytes
(
value
)
,
0
)
;
}
public
static
uint
ToUnsigned
(
this
int
value
)
{
return
BitConverter
.
ToUInt32
(
BitConverter
.
GetBytes
(
value
)
,
0
)
;
}
public
static
ulong
ToUnsigned
(
this
long
value
)
{
return
BitConverter
.
ToUInt64
(
BitConverter
.
GetBytes
(
value
)
,
0
)
;
}
#endregion
#region network byte order support
public
static
ushort
ToHostUInt16
(
this
byte
[
]
bytes
,
int
index
=
0
)
{
return
IPAddress
.
NetworkToHostOrder
(
BitConverter
.
ToInt16
(
bytes
,
index
)
)
.
ToUnsigned
(
)
;
}
public
static
uint
ToHostUInt32
(
this
byte
[
]
bytes
,
int
index
=
0
)
{
return
IPAddress
.
NetworkToHostOrder
(
BitConverter
.
ToInt32
(
bytes
,
index
)
)
.
ToUnsigned
(
)
;
}
public
static
ulong
ToHostUInt64
(
this
byte
[
]
bytes
,
int
index
=
0
)
{
return
IPAddress
.
NetworkToHostOrder
(
BitConverter
.
ToInt64
(
bytes
,
index
)
)
.
ToUnsigned
(
)
;
}
public
static
byte
[
]
ToNetworkBytes
(
this
ushort
value
)
{
return
BitConverter
.
GetBytes
(
IPAddress
.
HostToNetworkOrder
(
value
.
ToSigned
(
)
)
)
;
}
public
static
byte
[
]
ToNetworkBytes
(
this
uint
value
)
{
return
BitConverter
.
GetBytes
(
IPAddress
.
HostToNetworkOrder
(
value
.
ToSigned
(
)
)
)
;
}
public
static
byte
[
]
ToNetworkBytes
(
this
ulong
value
)
{
return
BitConverter
.
GetBytes
(
IPAddress
.
HostToNetworkOrder
(
value
.
ToSigned
(
)
)
)
;
}
#endregion
}
}
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