# Math.Sign Method

## Definition

Returns an integer that indicates the sign of a number.

 Sign(IntPtr) Returns an integer that indicates the sign of a native sized signed integer. Sign(Single) Returns an integer that indicates the sign of a single-precision floating-point number. Sign(SByte) Returns an integer that indicates the sign of an 8-bit signed integer. Sign(Int64) Returns an integer that indicates the sign of a 64-bit signed integer. Sign(Decimal) Returns an integer that indicates the sign of a decimal number. Sign(Int16) Returns an integer that indicates the sign of a 16-bit signed integer. Sign(Double) Returns an integer that indicates the sign of a double-precision floating-point number. Sign(Int32) Returns an integer that indicates the sign of a 32-bit signed integer.

## Sign(IntPtr)

Returns an integer that indicates the sign of a native sized signed integer.

``````public:
static int Sign(IntPtr value);``````
``public static int Sign (nint value);``
``public static int Sign (IntPtr value);``
``static member Sign : nativeint -> int``
``Public Shared Function Sign (value As IntPtr) As Integer``

value

nint

nativeint

A signed number.

#### Returns

A number that indicates the sign of `value`, as shown in the following table.

Return value Meaning
-1 `value` is less than zero.
0 `value` is equal to zero.
1 `value` is greater than zero.

### Examples

The following example demonstrates how to use the Sign(IntPtr) method to determine the sign of an IntPtr value and display it to the console.

``````// This example demonstrates Math.Sign()
using System;

class Sample
{
public static void Main()
{
string str = "{0}: {1,3} is {2} zero.";
string nl = Environment.NewLine;
byte     xByte1    = 0;
short    xShort1   = -2;
int      xInt1     = -3;
long     xLong1    = -4;
float    xSingle1  = 0.0f;
double   xDouble1  = 6.0;
Decimal  xDecimal1 = -7m;
nint     xIntPtr1  = 8;

// The following type is not CLS-compliant.
sbyte    xSbyte1   = -101;

Console.WriteLine(\$"{nl}Test the sign of the following types of values:");
Console.WriteLine(str, "Byte   ", xByte1, Test(Math.Sign(xByte1)));
Console.WriteLine(str, "Int16  ", xShort1, Test(Math.Sign(xShort1)));
Console.WriteLine(str, "Int32  ", xInt1, Test(Math.Sign(xInt1)));
Console.WriteLine(str, "Int64  ", xLong1, Test(Math.Sign(xLong1)));
Console.WriteLine(str, "Single ", xSingle1, Test(Math.Sign(xSingle1)));
Console.WriteLine(str, "Double ", xDouble1, Test(Math.Sign(xDouble1)));
Console.WriteLine(str, "Decimal", xDecimal1, Test(Math.Sign(xDecimal1)));
Console.WriteLine(str, "IntPtr", xIntPtr1, Test(Math.Sign(xIntPtr1)));

Console.WriteLine(\$"{nl}The following type is not CLS-compliant.");
Console.WriteLine(str, "SByte  ", xSbyte1, Test(Math.Sign(xSbyte1)));
}

public static string Test(int compare)
{
if (compare == 0)
return "equal to";
else if (compare < 0)
return "less than";
else
return "greater than";
}
}
/*
This example produces the following results:

Test the sign of the following types of values:
Byte   :   0 is equal to zero.
Int16  :  -2 is less than zero.
Int32  :  -3 is less than zero.
Int64  :  -4 is less than zero.
Single :   0 is equal to zero.
Double :   6 is greater than zero.
Decimal:  -7 is less than zero.
IntPtr:    8 is greater than zero.

The following type is not CLS-compliant.
SByte  : -101 is less than zero.
*/
``````
``````// This example demonstrates Math.Sign()
// In F#, the sign function may be used instead
open System

let test = function
| 0 ->
"equal to"
| x when x < 0 ->
"less than"
| _ ->
"greater than"

let print typ a b =
printfn \$"{typ}: {a,3} is {b} zero."

let xByte1    = 0uy
let xShort1   = -2s
let xInt1     = -3
let xLong1    = -4L
let xSingle1  = 0f
let xDouble1  = 6.
let xDecimal1 = -7m
let xIntPtr1  = 8

// The following type is not CLS-compliant.
let xSbyte1   = -101y

printfn "\nTest the sign of the following types of values:"
print "Byte   " xByte1 (test (Math.Sign xByte1))
print "Int16  " xShort1 (test (Math.Sign xShort1))
print "Int32  " xInt1 (test (Math.Sign xInt1))
print "Int64  " xLong1 (test (Math.Sign xLong1))
print "Single " xSingle1 (test (Math.Sign xSingle1))
print "Double " xDouble1 (test (Math.Sign xDouble1))
print "Decimal" xDecimal1 (test (Math.Sign xDecimal1))
print "IntPtr"  xIntPtr1 (test (Math.Sign xIntPtr1))

printfn "\nThe following type is not CLS-compliant."
print "SByte  " xSbyte1 (test (Math.Sign xSbyte1))

// This example produces the following results:
//     Test the sign of the following types of values:
//     Byte   :   0 is equal to zero.
//     Int16  :  -2 is less than zero.
//     Int32  :  -3 is less than zero.
//     Int64  :  -4 is less than zero.
//     Single :   0 is equal to zero.
//     Double :   6 is greater than zero.
//     Decimal:  -7 is less than zero.
//     IntPtr:    8 is greater than zero.
//
//     The following type is not CLS-compliant.
//     SByte  : -101 is less than zero.
``````

## Sign(Single)

Returns an integer that indicates the sign of a single-precision floating-point number.

``````public:
static int Sign(float value);``````
``public static int Sign (float value);``
``static member Sign : single -> int``
``Public Shared Function Sign (value As Single) As Integer``

value
Single

A signed number.

#### Returns

A number that indicates the sign of `value`, as shown in the following table.

Return value Meaning
-1 `value` is less than zero.
0 `value` is equal to zero.
1 `value` is greater than zero.

#### Exceptions

`value` is equal to NaN.

### Examples

The following example demonstrates how to use the Sign(Single) method to determine the sign of a Single value and display it to the console.

``````// This example demonstrates Math.Sign()
using namespace System;
String^ Test( int compare )
{
if ( compare == 0 )
return "equal to";
else
if ( compare < 0 )
return "less than";
else
return "greater than";
}

int main()
{
String^ str = "{0}: {1,3} is {2} zero.";
String^ nl = Environment::NewLine;
Byte xByte1 = 0;
short xShort1 = -2;
int xInt1 = -3;
long xLong1 = -4;
float xSingle1 = 0.0f;
double xDouble1 = 6.0;
Decimal xDecimal1 = -7;

// The following type is not CLS-compliant.
SByte xSbyte1 = -101;
Console::WriteLine( "{0}Test the sign of the following types of values:", nl );
Console::WriteLine( str, "Byte   ", xByte1, Test( Math::Sign( xByte1 ) ) );
Console::WriteLine( str, "Int16  ", xShort1, Test( Math::Sign( xShort1 ) ) );
Console::WriteLine( str, "Int32  ", xInt1, Test( Math::Sign( xInt1 ) ) );
Console::WriteLine( str, "Int64  ", xLong1, Test( Math::Sign( xLong1 ) ) );
Console::WriteLine( str, "Single ", xSingle1, Test( Math::Sign( xSingle1 ) ) );
Console::WriteLine( str, "Double ", xDouble1, Test( Math::Sign( xDouble1 ) ) );
Console::WriteLine( str, "Decimal", xDecimal1, Test( Math::Sign( xDecimal1 ) ) );

//
Console::WriteLine( "{0}The following type is not CLS-compliant.", nl );
Console::WriteLine( str, "SByte  ", xSbyte1, Test( Math::Sign( xSbyte1 ) ) );
}

/*
This example produces the following results:

Test the sign of the following types of values:
Byte   :   0 is equal to zero.
Int16  :  -2 is less than zero.
Int32  :  -3 is less than zero.
Int64  :  -4 is less than zero.
Single :   0 is equal to zero.
Double :   6 is greater than zero.
Decimal:  -7 is less than zero.

The following type is not CLS-compliant.
SByte  : -101 is less than zero.
*/
``````
``````// This example demonstrates Math.Sign()
using System;

class Sample
{
public static void Main()
{
string str = "{0}: {1,3} is {2} zero.";
string nl = Environment.NewLine;
byte     xByte1    = 0;
short    xShort1   = -2;
int      xInt1     = -3;
long     xLong1    = -4;
float    xSingle1  = 0.0f;
double   xDouble1  = 6.0;
Decimal  xDecimal1 = -7m;
nint     xIntPtr1  = 8;

// The following type is not CLS-compliant.
sbyte    xSbyte1   = -101;

Console.WriteLine(\$"{nl}Test the sign of the following types of values:");
Console.WriteLine(str, "Byte   ", xByte1, Test(Math.Sign(xByte1)));
Console.WriteLine(str, "Int16  ", xShort1, Test(Math.Sign(xShort1)));
Console.WriteLine(str, "Int32  ", xInt1, Test(Math.Sign(xInt1)));
Console.WriteLine(str, "Int64  ", xLong1, Test(Math.Sign(xLong1)));
Console.WriteLine(str, "Single ", xSingle1, Test(Math.Sign(xSingle1)));
Console.WriteLine(str, "Double ", xDouble1, Test(Math.Sign(xDouble1)));
Console.WriteLine(str, "Decimal", xDecimal1, Test(Math.Sign(xDecimal1)));
Console.WriteLine(str, "IntPtr", xIntPtr1, Test(Math.Sign(xIntPtr1)));

Console.WriteLine(\$"{nl}The following type is not CLS-compliant.");
Console.WriteLine(str, "SByte  ", xSbyte1, Test(Math.Sign(xSbyte1)));
}

public static string Test(int compare)
{
if (compare == 0)
return "equal to";
else if (compare < 0)
return "less than";
else
return "greater than";
}
}
/*
This example produces the following results:

Test the sign of the following types of values:
Byte   :   0 is equal to zero.
Int16  :  -2 is less than zero.
Int32  :  -3 is less than zero.
Int64  :  -4 is less than zero.
Single :   0 is equal to zero.
Double :   6 is greater than zero.
Decimal:  -7 is less than zero.
IntPtr:    8 is greater than zero.

The following type is not CLS-compliant.
SByte  : -101 is less than zero.
*/
``````
``````// This example demonstrates Math.Sign()
// In F#, the sign function may be used instead
open System

let test = function
| 0 ->
"equal to"
| x when x < 0 ->
"less than"
| _ ->
"greater than"

let print typ a b =
printfn \$"{typ}: {a,3} is {b} zero."

let xByte1    = 0uy
let xShort1   = -2s
let xInt1     = -3
let xLong1    = -4L
let xSingle1  = 0f
let xDouble1  = 6.
let xDecimal1 = -7m
let xIntPtr1  = 8

// The following type is not CLS-compliant.
let xSbyte1   = -101y

printfn "\nTest the sign of the following types of values:"
print "Byte   " xByte1 (test (Math.Sign xByte1))
print "Int16  " xShort1 (test (Math.Sign xShort1))
print "Int32  " xInt1 (test (Math.Sign xInt1))
print "Int64  " xLong1 (test (Math.Sign xLong1))
print "Single " xSingle1 (test (Math.Sign xSingle1))
print "Double " xDouble1 (test (Math.Sign xDouble1))
print "Decimal" xDecimal1 (test (Math.Sign xDecimal1))
print "IntPtr"  xIntPtr1 (test (Math.Sign xIntPtr1))

printfn "\nThe following type is not CLS-compliant."
print "SByte  " xSbyte1 (test (Math.Sign xSbyte1))

// This example produces the following results:
//     Test the sign of the following types of values:
//     Byte   :   0 is equal to zero.
//     Int16  :  -2 is less than zero.
//     Int32  :  -3 is less than zero.
//     Int64  :  -4 is less than zero.
//     Single :   0 is equal to zero.
//     Double :   6 is greater than zero.
//     Decimal:  -7 is less than zero.
//     IntPtr:    8 is greater than zero.
//
//     The following type is not CLS-compliant.
//     SByte  : -101 is less than zero.
``````
``````' This example demonstrates Math.Sign()
Class Sample
Public Shared Sub Main()
Dim str As String = "{0}: {1,3} is {2} zero."
Dim nl As String = Environment.NewLine

Dim xByte1 As Byte = 0
Dim xShort1 As Short = -2
Dim xInt1 As Integer = -3
Dim xLong1 As Long = -4
Dim xSingle1 As Single = 0F
Dim xDouble1 As Double = 6.0
Dim xDecimal1 As [Decimal] = -7D

' The following type is not CLS-compliant.
Dim xSbyte1 As SByte = -101

Console.WriteLine("{0}Test the sign of the following types of values:", nl)
Console.WriteLine(str, "Byte   ", xByte1, Test(Math.Sign(xByte1)))
Console.WriteLine(str, "Int16  ", xShort1, Test(Math.Sign(xShort1)))
Console.WriteLine(str, "Int32  ", xInt1, Test(Math.Sign(xInt1)))
Console.WriteLine(str, "Int64  ", xLong1, Test(Math.Sign(xLong1)))
Console.WriteLine(str, "Single ", xSingle1, Test(Math.Sign(xSingle1)))
Console.WriteLine(str, "Double ", xDouble1, Test(Math.Sign(xDouble1)))
Console.WriteLine(str, "Decimal", xDecimal1, Test(Math.Sign(xDecimal1)))
'
Console.WriteLine("{0}The following type is not CLS-compliant.", nl)
Console.WriteLine(str, "SByte  ", xSbyte1, Test(Math.Sign(xSbyte1)))
End Sub
'
Public Shared Function Test([compare] As Integer) As [String]
If [compare] = 0 Then
Return "equal to"
ElseIf [compare] < 0 Then
Return "less than"
Else
Return "greater than"
End If
End Function 'Test
End Class
'
'This example produces the following results:
'
'Test the sign of the following types of values:
'Byte   :   0 is equal to zero.
'Int16  :  -2 is less than zero.
'Int32  :  -3 is less than zero.
'Int64  :  -4 is less than zero.
'Single :   0 is equal to zero.
'Double :   6 is greater than zero.
'Decimal:  -7 is less than zero.
'
'The following type is not CLS-compliant.
'SByte  : -101 is less than zero.
``````

## Sign(SByte)

Important

This API is not CLS-compliant.

Returns an integer that indicates the sign of an 8-bit signed integer.

``````public:
static int Sign(System::SByte value);``````
``````[System.CLSCompliant(false)]
public static int Sign (sbyte value);``````
``````[<System.CLSCompliant(false)>]
static member Sign : sbyte -> int``````
``Public Shared Function Sign (value As SByte) As Integer``

value
SByte

A signed number.

#### Returns

A number that indicates the sign of `value`, as shown in the following table.

Return value Meaning
-1 `value` is less than zero.
0 `value` is equal to zero.
1 `value` is greater than zero.
Attributes

### Examples

The following example demonstrates how to use the Sign(SByte) method to determine the sign of an SByte value and display it to the console.

``````// This example demonstrates Math.Sign()
using namespace System;
String^ Test( int compare )
{
if ( compare == 0 )
return "equal to";
else
if ( compare < 0 )
return "less than";
else
return "greater than";
}

int main()
{
String^ str = "{0}: {1,3} is {2} zero.";
String^ nl = Environment::NewLine;
Byte xByte1 = 0;
short xShort1 = -2;
int xInt1 = -3;
long xLong1 = -4;
float xSingle1 = 0.0f;
double xDouble1 = 6.0;
Decimal xDecimal1 = -7;

// The following type is not CLS-compliant.
SByte xSbyte1 = -101;
Console::WriteLine( "{0}Test the sign of the following types of values:", nl );
Console::WriteLine( str, "Byte   ", xByte1, Test( Math::Sign( xByte1 ) ) );
Console::WriteLine( str, "Int16  ", xShort1, Test( Math::Sign( xShort1 ) ) );
Console::WriteLine( str, "Int32  ", xInt1, Test( Math::Sign( xInt1 ) ) );
Console::WriteLine( str, "Int64  ", xLong1, Test( Math::Sign( xLong1 ) ) );
Console::WriteLine( str, "Single ", xSingle1, Test( Math::Sign( xSingle1 ) ) );
Console::WriteLine( str, "Double ", xDouble1, Test( Math::Sign( xDouble1 ) ) );
Console::WriteLine( str, "Decimal", xDecimal1, Test( Math::Sign( xDecimal1 ) ) );

//
Console::WriteLine( "{0}The following type is not CLS-compliant.", nl );
Console::WriteLine( str, "SByte  ", xSbyte1, Test( Math::Sign( xSbyte1 ) ) );
}

/*
This example produces the following results:

Test the sign of the following types of values:
Byte   :   0 is equal to zero.
Int16  :  -2 is less than zero.
Int32  :  -3 is less than zero.
Int64  :  -4 is less than zero.
Single :   0 is equal to zero.
Double :   6 is greater than zero.
Decimal:  -7 is less than zero.

The following type is not CLS-compliant.
SByte  : -101 is less than zero.
*/
``````
``````// This example demonstrates Math.Sign()
using System;

class Sample
{
public static void Main()
{
string str = "{0}: {1,3} is {2} zero.";
string nl = Environment.NewLine;
byte     xByte1    = 0;
short    xShort1   = -2;
int      xInt1     = -3;
long     xLong1    = -4;
float    xSingle1  = 0.0f;
double   xDouble1  = 6.0;
Decimal  xDecimal1 = -7m;
nint     xIntPtr1  = 8;

// The following type is not CLS-compliant.
sbyte    xSbyte1   = -101;

Console.WriteLine(\$"{nl}Test the sign of the following types of values:");
Console.WriteLine(str, "Byte   ", xByte1, Test(Math.Sign(xByte1)));
Console.WriteLine(str, "Int16  ", xShort1, Test(Math.Sign(xShort1)));
Console.WriteLine(str, "Int32  ", xInt1, Test(Math.Sign(xInt1)));
Console.WriteLine(str, "Int64  ", xLong1, Test(Math.Sign(xLong1)));
Console.WriteLine(str, "Single ", xSingle1, Test(Math.Sign(xSingle1)));
Console.WriteLine(str, "Double ", xDouble1, Test(Math.Sign(xDouble1)));
Console.WriteLine(str, "Decimal", xDecimal1, Test(Math.Sign(xDecimal1)));
Console.WriteLine(str, "IntPtr", xIntPtr1, Test(Math.Sign(xIntPtr1)));

Console.WriteLine(\$"{nl}The following type is not CLS-compliant.");
Console.WriteLine(str, "SByte  ", xSbyte1, Test(Math.Sign(xSbyte1)));
}

public static string Test(int compare)
{
if (compare == 0)
return "equal to";
else if (compare < 0)
return "less than";
else
return "greater than";
}
}
/*
This example produces the following results:

Test the sign of the following types of values:
Byte   :   0 is equal to zero.
Int16  :  -2 is less than zero.
Int32  :  -3 is less than zero.
Int64  :  -4 is less than zero.
Single :   0 is equal to zero.
Double :   6 is greater than zero.
Decimal:  -7 is less than zero.
IntPtr:    8 is greater than zero.

The following type is not CLS-compliant.
SByte  : -101 is less than zero.
*/
``````
``````// This example demonstrates Math.Sign()
// In F#, the sign function may be used instead
open System

let test = function
| 0 ->
"equal to"
| x when x < 0 ->
"less than"
| _ ->
"greater than"

let print typ a b =
printfn \$"{typ}: {a,3} is {b} zero."

let xByte1    = 0uy
let xShort1   = -2s
let xInt1     = -3
let xLong1    = -4L
let xSingle1  = 0f
let xDouble1  = 6.
let xDecimal1 = -7m
let xIntPtr1  = 8

// The following type is not CLS-compliant.
let xSbyte1   = -101y

printfn "\nTest the sign of the following types of values:"
print "Byte   " xByte1 (test (Math.Sign xByte1))
print "Int16  " xShort1 (test (Math.Sign xShort1))
print "Int32  " xInt1 (test (Math.Sign xInt1))
print "Int64  " xLong1 (test (Math.Sign xLong1))
print "Single " xSingle1 (test (Math.Sign xSingle1))
print "Double " xDouble1 (test (Math.Sign xDouble1))
print "Decimal" xDecimal1 (test (Math.Sign xDecimal1))
print "IntPtr"  xIntPtr1 (test (Math.Sign xIntPtr1))

printfn "\nThe following type is not CLS-compliant."
print "SByte  " xSbyte1 (test (Math.Sign xSbyte1))

// This example produces the following results:
//     Test the sign of the following types of values:
//     Byte   :   0 is equal to zero.
//     Int16  :  -2 is less than zero.
//     Int32  :  -3 is less than zero.
//     Int64  :  -4 is less than zero.
//     Single :   0 is equal to zero.
//     Double :   6 is greater than zero.
//     Decimal:  -7 is less than zero.
//     IntPtr:    8 is greater than zero.
//
//     The following type is not CLS-compliant.
//     SByte  : -101 is less than zero.
``````
``````' This example demonstrates Math.Sign()
Class Sample
Public Shared Sub Main()
Dim str As String = "{0}: {1,3} is {2} zero."
Dim nl As String = Environment.NewLine

Dim xByte1 As Byte = 0
Dim xShort1 As Short = -2
Dim xInt1 As Integer = -3
Dim xLong1 As Long = -4
Dim xSingle1 As Single = 0F
Dim xDouble1 As Double = 6.0
Dim xDecimal1 As [Decimal] = -7D

' The following type is not CLS-compliant.
Dim xSbyte1 As SByte = -101

Console.WriteLine("{0}Test the sign of the following types of values:", nl)
Console.WriteLine(str, "Byte   ", xByte1, Test(Math.Sign(xByte1)))
Console.WriteLine(str, "Int16  ", xShort1, Test(Math.Sign(xShort1)))
Console.WriteLine(str, "Int32  ", xInt1, Test(Math.Sign(xInt1)))
Console.WriteLine(str, "Int64  ", xLong1, Test(Math.Sign(xLong1)))
Console.WriteLine(str, "Single ", xSingle1, Test(Math.Sign(xSingle1)))
Console.WriteLine(str, "Double ", xDouble1, Test(Math.Sign(xDouble1)))
Console.WriteLine(str, "Decimal", xDecimal1, Test(Math.Sign(xDecimal1)))
'
Console.WriteLine("{0}The following type is not CLS-compliant.", nl)
Console.WriteLine(str, "SByte  ", xSbyte1, Test(Math.Sign(xSbyte1)))
End Sub
'
Public Shared Function Test([compare] As Integer) As [String]
If [compare] = 0 Then
Return "equal to"
ElseIf [compare] < 0 Then
Return "less than"
Else
Return "greater than"
End If
End Function 'Test
End Class
'
'This example produces the following results:
'
'Test the sign of the following types of values:
'Byte   :   0 is equal to zero.
'Int16  :  -2 is less than zero.
'Int32  :  -3 is less than zero.
'Int64  :  -4 is less than zero.
'Single :   0 is equal to zero.
'Double :   6 is greater than zero.
'Decimal:  -7 is less than zero.
'
'The following type is not CLS-compliant.
'SByte  : -101 is less than zero.
``````

## Sign(Int64)

Returns an integer that indicates the sign of a 64-bit signed integer.

``````public:
static int Sign(long value);``````
``public static int Sign (long value);``
``static member Sign : int64 -> int``
``Public Shared Function Sign (value As Long) As Integer``

value
Int64

A signed number.

#### Returns

A number that indicates the sign of `value`, as shown in the following table.

Return value Meaning
-1 `value` is less than zero.
0 `value` is equal to zero.
1 `value` is greater than zero.

### Examples

The following example demonstrates how to use the Sign(Int64) method to determine the sign of an Int64 value and display it to the console.

``````// This example demonstrates Math.Sign()
using namespace System;
String^ Test( int compare )
{
if ( compare == 0 )
return "equal to";
else
if ( compare < 0 )
return "less than";
else
return "greater than";
}

int main()
{
String^ str = "{0}: {1,3} is {2} zero.";
String^ nl = Environment::NewLine;
Byte xByte1 = 0;
short xShort1 = -2;
int xInt1 = -3;
long xLong1 = -4;
float xSingle1 = 0.0f;
double xDouble1 = 6.0;
Decimal xDecimal1 = -7;

// The following type is not CLS-compliant.
SByte xSbyte1 = -101;
Console::WriteLine( "{0}Test the sign of the following types of values:", nl );
Console::WriteLine( str, "Byte   ", xByte1, Test( Math::Sign( xByte1 ) ) );
Console::WriteLine( str, "Int16  ", xShort1, Test( Math::Sign( xShort1 ) ) );
Console::WriteLine( str, "Int32  ", xInt1, Test( Math::Sign( xInt1 ) ) );
Console::WriteLine( str, "Int64  ", xLong1, Test( Math::Sign( xLong1 ) ) );
Console::WriteLine( str, "Single ", xSingle1, Test( Math::Sign( xSingle1 ) ) );
Console::WriteLine( str, "Double ", xDouble1, Test( Math::Sign( xDouble1 ) ) );
Console::WriteLine( str, "Decimal", xDecimal1, Test( Math::Sign( xDecimal1 ) ) );

//
Console::WriteLine( "{0}The following type is not CLS-compliant.", nl );
Console::WriteLine( str, "SByte  ", xSbyte1, Test( Math::Sign( xSbyte1 ) ) );
}

/*
This example produces the following results:

Test the sign of the following types of values:
Byte   :   0 is equal to zero.
Int16  :  -2 is less than zero.
Int32  :  -3 is less than zero.
Int64  :  -4 is less than zero.
Single :   0 is equal to zero.
Double :   6 is greater than zero.
Decimal:  -7 is less than zero.

The following type is not CLS-compliant.
SByte  : -101 is less than zero.
*/
``````
``````// This example demonstrates Math.Sign()
using System;

class Sample
{
public static void Main()
{
string str = "{0}: {1,3} is {2} zero.";
string nl = Environment.NewLine;
byte     xByte1    = 0;
short    xShort1   = -2;
int      xInt1     = -3;
long     xLong1    = -4;
float    xSingle1  = 0.0f;
double   xDouble1  = 6.0;
Decimal  xDecimal1 = -7m;
nint     xIntPtr1  = 8;

// The following type is not CLS-compliant.
sbyte    xSbyte1   = -101;

Console.WriteLine(\$"{nl}Test the sign of the following types of values:");
Console.WriteLine(str, "Byte   ", xByte1, Test(Math.Sign(xByte1)));
Console.WriteLine(str, "Int16  ", xShort1, Test(Math.Sign(xShort1)));
Console.WriteLine(str, "Int32  ", xInt1, Test(Math.Sign(xInt1)));
Console.WriteLine(str, "Int64  ", xLong1, Test(Math.Sign(xLong1)));
Console.WriteLine(str, "Single ", xSingle1, Test(Math.Sign(xSingle1)));
Console.WriteLine(str, "Double ", xDouble1, Test(Math.Sign(xDouble1)));
Console.WriteLine(str, "Decimal", xDecimal1, Test(Math.Sign(xDecimal1)));
Console.WriteLine(str, "IntPtr", xIntPtr1, Test(Math.Sign(xIntPtr1)));

Console.WriteLine(\$"{nl}The following type is not CLS-compliant.");
Console.WriteLine(str, "SByte  ", xSbyte1, Test(Math.Sign(xSbyte1)));
}

public static string Test(int compare)
{
if (compare == 0)
return "equal to";
else if (compare < 0)
return "less than";
else
return "greater than";
}
}
/*
This example produces the following results:

Test the sign of the following types of values:
Byte   :   0 is equal to zero.
Int16  :  -2 is less than zero.
Int32  :  -3 is less than zero.
Int64  :  -4 is less than zero.
Single :   0 is equal to zero.
Double :   6 is greater than zero.
Decimal:  -7 is less than zero.
IntPtr:    8 is greater than zero.

The following type is not CLS-compliant.
SByte  : -101 is less than zero.
*/
``````
``````// This example demonstrates Math.Sign()
// In F#, the sign function may be used instead
open System

let test = function
| 0 ->
"equal to"
| x when x < 0 ->
"less than"
| _ ->
"greater than"

let print typ a b =
printfn \$"{typ}: {a,3} is {b} zero."

let xByte1    = 0uy
let xShort1   = -2s
let xInt1     = -3
let xLong1    = -4L
let xSingle1  = 0f
let xDouble1  = 6.
let xDecimal1 = -7m
let xIntPtr1  = 8

// The following type is not CLS-compliant.
let xSbyte1   = -101y

printfn "\nTest the sign of the following types of values:"
print "Byte   " xByte1 (test (Math.Sign xByte1))
print "Int16  " xShort1 (test (Math.Sign xShort1))
print "Int32  " xInt1 (test (Math.Sign xInt1))
print "Int64  " xLong1 (test (Math.Sign xLong1))
print "Single " xSingle1 (test (Math.Sign xSingle1))
print "Double " xDouble1 (test (Math.Sign xDouble1))
print "Decimal" xDecimal1 (test (Math.Sign xDecimal1))
print "IntPtr"  xIntPtr1 (test (Math.Sign xIntPtr1))

printfn "\nThe following type is not CLS-compliant."
print "SByte  " xSbyte1 (test (Math.Sign xSbyte1))

// This example produces the following results:
//     Test the sign of the following types of values:
//     Byte   :   0 is equal to zero.
//     Int16  :  -2 is less than zero.
//     Int32  :  -3 is less than zero.
//     Int64  :  -4 is less than zero.
//     Single :   0 is equal to zero.
//     Double :   6 is greater than zero.
//     Decimal:  -7 is less than zero.
//     IntPtr:    8 is greater than zero.
//
//     The following type is not CLS-compliant.
//     SByte  : -101 is less than zero.
``````
``````' This example demonstrates Math.Sign()
Class Sample
Public Shared Sub Main()
Dim str As String = "{0}: {1,3} is {2} zero."
Dim nl As String = Environment.NewLine

Dim xByte1 As Byte = 0
Dim xShort1 As Short = -2
Dim xInt1 As Integer = -3
Dim xLong1 As Long = -4
Dim xSingle1 As Single = 0F
Dim xDouble1 As Double = 6.0
Dim xDecimal1 As [Decimal] = -7D

' The following type is not CLS-compliant.
Dim xSbyte1 As SByte = -101

Console.WriteLine("{0}Test the sign of the following types of values:", nl)
Console.WriteLine(str, "Byte   ", xByte1, Test(Math.Sign(xByte1)))
Console.WriteLine(str, "Int16  ", xShort1, Test(Math.Sign(xShort1)))
Console.WriteLine(str, "Int32  ", xInt1, Test(Math.Sign(xInt1)))
Console.WriteLine(str, "Int64  ", xLong1, Test(Math.Sign(xLong1)))
Console.WriteLine(str, "Single ", xSingle1, Test(Math.Sign(xSingle1)))
Console.WriteLine(str, "Double ", xDouble1, Test(Math.Sign(xDouble1)))
Console.WriteLine(str, "Decimal", xDecimal1, Test(Math.Sign(xDecimal1)))
'
Console.WriteLine("{0}The following type is not CLS-compliant.", nl)
Console.WriteLine(str, "SByte  ", xSbyte1, Test(Math.Sign(xSbyte1)))
End Sub
'
Public Shared Function Test([compare] As Integer) As [String]
If [compare] = 0 Then
Return "equal to"
ElseIf [compare] < 0 Then
Return "less than"
Else
Return "greater than"
End If
End Function 'Test
End Class
'
'This example produces the following results:
'
'Test the sign of the following types of values:
'Byte   :   0 is equal to zero.
'Int16  :  -2 is less than zero.
'Int32  :  -3 is less than zero.
'Int64  :  -4 is less than zero.
'Single :   0 is equal to zero.
'Double :   6 is greater than zero.
'Decimal:  -7 is less than zero.
'
'The following type is not CLS-compliant.
'SByte  : -101 is less than zero.
``````

## Sign(Decimal)

Returns an integer that indicates the sign of a decimal number.

``````public:
static int Sign(System::Decimal value);``````
``public static int Sign (decimal value);``
``static member Sign : decimal -> int``
``Public Shared Function Sign (value As Decimal) As Integer``

#### Parameters

value
Decimal

A signed decimal number.

#### Returns

A number that indicates the sign of `value`, as shown in the following table.

Return value Meaning
-1 `value` is less than zero.
0 `value` is equal to zero.
1 `value` is greater than zero.

### Examples

The following example demonstrates how to use the Sign(Decimal) method to determine the sign of a Decimal value and display it to the console.

``````// This example demonstrates Math.Sign()
using namespace System;
String^ Test( int compare )
{
if ( compare == 0 )
return "equal to";
else
if ( compare < 0 )
return "less than";
else
return "greater than";
}

int main()
{
String^ str = "{0}: {1,3} is {2} zero.";
String^ nl = Environment::NewLine;
Byte xByte1 = 0;
short xShort1 = -2;
int xInt1 = -3;
long xLong1 = -4;
float xSingle1 = 0.0f;
double xDouble1 = 6.0;
Decimal xDecimal1 = -7;

// The following type is not CLS-compliant.
SByte xSbyte1 = -101;
Console::WriteLine( "{0}Test the sign of the following types of values:", nl );
Console::WriteLine( str, "Byte   ", xByte1, Test( Math::Sign( xByte1 ) ) );
Console::WriteLine( str, "Int16  ", xShort1, Test( Math::Sign( xShort1 ) ) );
Console::WriteLine( str, "Int32  ", xInt1, Test( Math::Sign( xInt1 ) ) );
Console::WriteLine( str, "Int64  ", xLong1, Test( Math::Sign( xLong1 ) ) );
Console::WriteLine( str, "Single ", xSingle1, Test( Math::Sign( xSingle1 ) ) );
Console::WriteLine( str, "Double ", xDouble1, Test( Math::Sign( xDouble1 ) ) );
Console::WriteLine( str, "Decimal", xDecimal1, Test( Math::Sign( xDecimal1 ) ) );

//
Console::WriteLine( "{0}The following type is not CLS-compliant.", nl );
Console::WriteLine( str, "SByte  ", xSbyte1, Test( Math::Sign( xSbyte1 ) ) );
}

/*
This example produces the following results:

Test the sign of the following types of values:
Byte   :   0 is equal to zero.
Int16  :  -2 is less than zero.
Int32  :  -3 is less than zero.
Int64  :  -4 is less than zero.
Single :   0 is equal to zero.
Double :   6 is greater than zero.
Decimal:  -7 is less than zero.

The following type is not CLS-compliant.
SByte  : -101 is less than zero.
*/
``````
``````// This example demonstrates Math.Sign()
using System;

class Sample
{
public static void Main()
{
string str = "{0}: {1,3} is {2} zero.";
string nl = Environment.NewLine;
byte     xByte1    = 0;
short    xShort1   = -2;
int      xInt1     = -3;
long     xLong1    = -4;
float    xSingle1  = 0.0f;
double   xDouble1  = 6.0;
Decimal  xDecimal1 = -7m;
nint     xIntPtr1  = 8;

// The following type is not CLS-compliant.
sbyte    xSbyte1   = -101;

Console.WriteLine(\$"{nl}Test the sign of the following types of values:");
Console.WriteLine(str, "Byte   ", xByte1, Test(Math.Sign(xByte1)));
Console.WriteLine(str, "Int16  ", xShort1, Test(Math.Sign(xShort1)));
Console.WriteLine(str, "Int32  ", xInt1, Test(Math.Sign(xInt1)));
Console.WriteLine(str, "Int64  ", xLong1, Test(Math.Sign(xLong1)));
Console.WriteLine(str, "Single ", xSingle1, Test(Math.Sign(xSingle1)));
Console.WriteLine(str, "Double ", xDouble1, Test(Math.Sign(xDouble1)));
Console.WriteLine(str, "Decimal", xDecimal1, Test(Math.Sign(xDecimal1)));
Console.WriteLine(str, "IntPtr", xIntPtr1, Test(Math.Sign(xIntPtr1)));

Console.WriteLine(\$"{nl}The following type is not CLS-compliant.");
Console.WriteLine(str, "SByte  ", xSbyte1, Test(Math.Sign(xSbyte1)));
}

public static string Test(int compare)
{
if (compare == 0)
return "equal to";
else if (compare < 0)
return "less than";
else
return "greater than";
}
}
/*
This example produces the following results:

Test the sign of the following types of values:
Byte   :   0 is equal to zero.
Int16  :  -2 is less than zero.
Int32  :  -3 is less than zero.
Int64  :  -4 is less than zero.
Single :   0 is equal to zero.
Double :   6 is greater than zero.
Decimal:  -7 is less than zero.
IntPtr:    8 is greater than zero.

The following type is not CLS-compliant.
SByte  : -101 is less than zero.
*/
``````
``````// This example demonstrates Math.Sign()
// In F#, the sign function may be used instead
open System

let test = function
| 0 ->
"equal to"
| x when x < 0 ->
"less than"
| _ ->
"greater than"

let print typ a b =
printfn \$"{typ}: {a,3} is {b} zero."

let xByte1    = 0uy
let xShort1   = -2s
let xInt1     = -3
let xLong1    = -4L
let xSingle1  = 0f
let xDouble1  = 6.
let xDecimal1 = -7m
let xIntPtr1  = 8

// The following type is not CLS-compliant.
let xSbyte1   = -101y

printfn "\nTest the sign of the following types of values:"
print "Byte   " xByte1 (test (Math.Sign xByte1))
print "Int16  " xShort1 (test (Math.Sign xShort1))
print "Int32  " xInt1 (test (Math.Sign xInt1))
print "Int64  " xLong1 (test (Math.Sign xLong1))
print "Single " xSingle1 (test (Math.Sign xSingle1))
print "Double " xDouble1 (test (Math.Sign xDouble1))
print "Decimal" xDecimal1 (test (Math.Sign xDecimal1))
print "IntPtr"  xIntPtr1 (test (Math.Sign xIntPtr1))

printfn "\nThe following type is not CLS-compliant."
print "SByte  " xSbyte1 (test (Math.Sign xSbyte1))

// This example produces the following results:
//     Test the sign of the following types of values:
//     Byte   :   0 is equal to zero.
//     Int16  :  -2 is less than zero.
//     Int32  :  -3 is less than zero.
//     Int64  :  -4 is less than zero.
//     Single :   0 is equal to zero.
//     Double :   6 is greater than zero.
//     Decimal:  -7 is less than zero.
//     IntPtr:    8 is greater than zero.
//
//     The following type is not CLS-compliant.
//     SByte  : -101 is less than zero.
``````
``````' This example demonstrates Math.Sign()
Class Sample
Public Shared Sub Main()
Dim str As String = "{0}: {1,3} is {2} zero."
Dim nl As String = Environment.NewLine

Dim xByte1 As Byte = 0
Dim xShort1 As Short = -2
Dim xInt1 As Integer = -3
Dim xLong1 As Long = -4
Dim xSingle1 As Single = 0F
Dim xDouble1 As Double = 6.0
Dim xDecimal1 As [Decimal] = -7D

' The following type is not CLS-compliant.
Dim xSbyte1 As SByte = -101

Console.WriteLine("{0}Test the sign of the following types of values:", nl)
Console.WriteLine(str, "Byte   ", xByte1, Test(Math.Sign(xByte1)))
Console.WriteLine(str, "Int16  ", xShort1, Test(Math.Sign(xShort1)))
Console.WriteLine(str, "Int32  ", xInt1, Test(Math.Sign(xInt1)))
Console.WriteLine(str, "Int64  ", xLong1, Test(Math.Sign(xLong1)))
Console.WriteLine(str, "Single ", xSingle1, Test(Math.Sign(xSingle1)))
Console.WriteLine(str, "Double ", xDouble1, Test(Math.Sign(xDouble1)))
Console.WriteLine(str, "Decimal", xDecimal1, Test(Math.Sign(xDecimal1)))
'
Console.WriteLine("{0}The following type is not CLS-compliant.", nl)
Console.WriteLine(str, "SByte  ", xSbyte1, Test(Math.Sign(xSbyte1)))
End Sub
'
Public Shared Function Test([compare] As Integer) As [String]
If [compare] = 0 Then
Return "equal to"
ElseIf [compare] < 0 Then
Return "less than"
Else
Return "greater than"
End If
End Function 'Test
End Class
'
'This example produces the following results:
'
'Test the sign of the following types of values:
'Byte   :   0 is equal to zero.
'Int16  :  -2 is less than zero.
'Int32  :  -3 is less than zero.
'Int64  :  -4 is less than zero.
'Single :   0 is equal to zero.
'Double :   6 is greater than zero.
'Decimal:  -7 is less than zero.
'
'The following type is not CLS-compliant.
'SByte  : -101 is less than zero.
``````

## Sign(Int16)

Returns an integer that indicates the sign of a 16-bit signed integer.

``````public:
static int Sign(short value);``````
``public static int Sign (short value);``
``static member Sign : int16 -> int``
``Public Shared Function Sign (value As Short) As Integer``

value
Int16

A signed number.

#### Returns

A number that indicates the sign of `value`, as shown in the following table.

Return value Meaning
-1 `value` is less than zero.
0 `value` is equal to zero.
1 `value` is greater than zero.

### Examples

The following example demonstrates how to use the Sign(Int16) method to determine the sign of an Int16 value and display it to the console.

``````// This example demonstrates Math.Sign()
using namespace System;
String^ Test( int compare )
{
if ( compare == 0 )
return "equal to";
else
if ( compare < 0 )
return "less than";
else
return "greater than";
}

int main()
{
String^ str = "{0}: {1,3} is {2} zero.";
String^ nl = Environment::NewLine;
Byte xByte1 = 0;
short xShort1 = -2;
int xInt1 = -3;
long xLong1 = -4;
float xSingle1 = 0.0f;
double xDouble1 = 6.0;
Decimal xDecimal1 = -7;

// The following type is not CLS-compliant.
SByte xSbyte1 = -101;
Console::WriteLine( "{0}Test the sign of the following types of values:", nl );
Console::WriteLine( str, "Byte   ", xByte1, Test( Math::Sign( xByte1 ) ) );
Console::WriteLine( str, "Int16  ", xShort1, Test( Math::Sign( xShort1 ) ) );
Console::WriteLine( str, "Int32  ", xInt1, Test( Math::Sign( xInt1 ) ) );
Console::WriteLine( str, "Int64  ", xLong1, Test( Math::Sign( xLong1 ) ) );
Console::WriteLine( str, "Single ", xSingle1, Test( Math::Sign( xSingle1 ) ) );
Console::WriteLine( str, "Double ", xDouble1, Test( Math::Sign( xDouble1 ) ) );
Console::WriteLine( str, "Decimal", xDecimal1, Test( Math::Sign( xDecimal1 ) ) );

//
Console::WriteLine( "{0}The following type is not CLS-compliant.", nl );
Console::WriteLine( str, "SByte  ", xSbyte1, Test( Math::Sign( xSbyte1 ) ) );
}

/*
This example produces the following results:

Test the sign of the following types of values:
Byte   :   0 is equal to zero.
Int16  :  -2 is less than zero.
Int32  :  -3 is less than zero.
Int64  :  -4 is less than zero.
Single :   0 is equal to zero.
Double :   6 is greater than zero.
Decimal:  -7 is less than zero.

The following type is not CLS-compliant.
SByte  : -101 is less than zero.
*/
``````
``````// This example demonstrates Math.Sign()
using System;

class Sample
{
public static void Main()
{
string str = "{0}: {1,3} is {2} zero.";
string nl = Environment.NewLine;
byte     xByte1    = 0;
short    xShort1   = -2;
int      xInt1     = -3;
long     xLong1    = -4;
float    xSingle1  = 0.0f;
double   xDouble1  = 6.0;
Decimal  xDecimal1 = -7m;
nint     xIntPtr1  = 8;

// The following type is not CLS-compliant.
sbyte    xSbyte1   = -101;

Console.WriteLine(\$"{nl}Test the sign of the following types of values:");
Console.WriteLine(str, "Byte   ", xByte1, Test(Math.Sign(xByte1)));
Console.WriteLine(str, "Int16  ", xShort1, Test(Math.Sign(xShort1)));
Console.WriteLine(str, "Int32  ", xInt1, Test(Math.Sign(xInt1)));
Console.WriteLine(str, "Int64  ", xLong1, Test(Math.Sign(xLong1)));
Console.WriteLine(str, "Single ", xSingle1, Test(Math.Sign(xSingle1)));
Console.WriteLine(str, "Double ", xDouble1, Test(Math.Sign(xDouble1)));
Console.WriteLine(str, "Decimal", xDecimal1, Test(Math.Sign(xDecimal1)));
Console.WriteLine(str, "IntPtr", xIntPtr1, Test(Math.Sign(xIntPtr1)));

Console.WriteLine(\$"{nl}The following type is not CLS-compliant.");
Console.WriteLine(str, "SByte  ", xSbyte1, Test(Math.Sign(xSbyte1)));
}

public static string Test(int compare)
{
if (compare == 0)
return "equal to";
else if (compare < 0)
return "less than";
else
return "greater than";
}
}
/*
This example produces the following results:

Test the sign of the following types of values:
Byte   :   0 is equal to zero.
Int16  :  -2 is less than zero.
Int32  :  -3 is less than zero.
Int64  :  -4 is less than zero.
Single :   0 is equal to zero.
Double :   6 is greater than zero.
Decimal:  -7 is less than zero.
IntPtr:    8 is greater than zero.

The following type is not CLS-compliant.
SByte  : -101 is less than zero.
*/
``````
``````// This example demonstrates Math.Sign()
// In F#, the sign function may be used instead
open System

let test = function
| 0 ->
"equal to"
| x when x < 0 ->
"less than"
| _ ->
"greater than"

let print typ a b =
printfn \$"{typ}: {a,3} is {b} zero."

let xByte1    = 0uy
let xShort1   = -2s
let xInt1     = -3
let xLong1    = -4L
let xSingle1  = 0f
let xDouble1  = 6.
let xDecimal1 = -7m
let xIntPtr1  = 8

// The following type is not CLS-compliant.
let xSbyte1   = -101y

printfn "\nTest the sign of the following types of values:"
print "Byte   " xByte1 (test (Math.Sign xByte1))
print "Int16  " xShort1 (test (Math.Sign xShort1))
print "Int32  " xInt1 (test (Math.Sign xInt1))
print "Int64  " xLong1 (test (Math.Sign xLong1))
print "Single " xSingle1 (test (Math.Sign xSingle1))
print "Double " xDouble1 (test (Math.Sign xDouble1))
print "Decimal" xDecimal1 (test (Math.Sign xDecimal1))
print "IntPtr"  xIntPtr1 (test (Math.Sign xIntPtr1))

printfn "\nThe following type is not CLS-compliant."
print "SByte  " xSbyte1 (test (Math.Sign xSbyte1))

// This example produces the following results:
//     Test the sign of the following types of values:
//     Byte   :   0 is equal to zero.
//     Int16  :  -2 is less than zero.
//     Int32  :  -3 is less than zero.
//     Int64  :  -4 is less than zero.
//     Single :   0 is equal to zero.
//     Double :   6 is greater than zero.
//     Decimal:  -7 is less than zero.
//     IntPtr:    8 is greater than zero.
//
//     The following type is not CLS-compliant.
//     SByte  : -101 is less than zero.
``````
``````' This example demonstrates Math.Sign()
Class Sample
Public Shared Sub Main()
Dim str As String = "{0}: {1,3} is {2} zero."
Dim nl As String = Environment.NewLine

Dim xByte1 As Byte = 0
Dim xShort1 As Short = -2
Dim xInt1 As Integer = -3
Dim xLong1 As Long = -4
Dim xSingle1 As Single = 0F
Dim xDouble1 As Double = 6.0
Dim xDecimal1 As [Decimal] = -7D

' The following type is not CLS-compliant.
Dim xSbyte1 As SByte = -101

Console.WriteLine("{0}Test the sign of the following types of values:", nl)
Console.WriteLine(str, "Byte   ", xByte1, Test(Math.Sign(xByte1)))
Console.WriteLine(str, "Int16  ", xShort1, Test(Math.Sign(xShort1)))
Console.WriteLine(str, "Int32  ", xInt1, Test(Math.Sign(xInt1)))
Console.WriteLine(str, "Int64  ", xLong1, Test(Math.Sign(xLong1)))
Console.WriteLine(str, "Single ", xSingle1, Test(Math.Sign(xSingle1)))
Console.WriteLine(str, "Double ", xDouble1, Test(Math.Sign(xDouble1)))
Console.WriteLine(str, "Decimal", xDecimal1, Test(Math.Sign(xDecimal1)))
'
Console.WriteLine("{0}The following type is not CLS-compliant.", nl)
Console.WriteLine(str, "SByte  ", xSbyte1, Test(Math.Sign(xSbyte1)))
End Sub
'
Public Shared Function Test([compare] As Integer) As [String]
If [compare] = 0 Then
Return "equal to"
ElseIf [compare] < 0 Then
Return "less than"
Else
Return "greater than"
End If
End Function 'Test
End Class
'
'This example produces the following results:
'
'Test the sign of the following types of values:
'Byte   :   0 is equal to zero.
'Int16  :  -2 is less than zero.
'Int32  :  -3 is less than zero.
'Int64  :  -4 is less than zero.
'Single :   0 is equal to zero.
'Double :   6 is greater than zero.
'Decimal:  -7 is less than zero.
'
'The following type is not CLS-compliant.
'SByte  : -101 is less than zero.
``````

## Sign(Double)

Returns an integer that indicates the sign of a double-precision floating-point number.

``````public:
static int Sign(double value);``````
``public static int Sign (double value);``
``static member Sign : double -> int``
``Public Shared Function Sign (value As Double) As Integer``

value
Double

A signed number.

#### Returns

A number that indicates the sign of `value`, as shown in the following table.

Return value Meaning
-1 `value` is less than zero.
0 `value` is equal to zero.
1 `value` is greater than zero.

#### Exceptions

`value` is equal to NaN.

### Examples

The following example demonstrates how to use the Sign(Double) method to determine the sign of a Double value and display it to the console.

``````// This example demonstrates Math.Sign()
using namespace System;
String^ Test( int compare )
{
if ( compare == 0 )
return "equal to";
else
if ( compare < 0 )
return "less than";
else
return "greater than";
}

int main()
{
String^ str = "{0}: {1,3} is {2} zero.";
String^ nl = Environment::NewLine;
Byte xByte1 = 0;
short xShort1 = -2;
int xInt1 = -3;
long xLong1 = -4;
float xSingle1 = 0.0f;
double xDouble1 = 6.0;
Decimal xDecimal1 = -7;

// The following type is not CLS-compliant.
SByte xSbyte1 = -101;
Console::WriteLine( "{0}Test the sign of the following types of values:", nl );
Console::WriteLine( str, "Byte   ", xByte1, Test( Math::Sign( xByte1 ) ) );
Console::WriteLine( str, "Int16  ", xShort1, Test( Math::Sign( xShort1 ) ) );
Console::WriteLine( str, "Int32  ", xInt1, Test( Math::Sign( xInt1 ) ) );
Console::WriteLine( str, "Int64  ", xLong1, Test( Math::Sign( xLong1 ) ) );
Console::WriteLine( str, "Single ", xSingle1, Test( Math::Sign( xSingle1 ) ) );
Console::WriteLine( str, "Double ", xDouble1, Test( Math::Sign( xDouble1 ) ) );
Console::WriteLine( str, "Decimal", xDecimal1, Test( Math::Sign( xDecimal1 ) ) );

//
Console::WriteLine( "{0}The following type is not CLS-compliant.", nl );
Console::WriteLine( str, "SByte  ", xSbyte1, Test( Math::Sign( xSbyte1 ) ) );
}

/*
This example produces the following results:

Test the sign of the following types of values:
Byte   :   0 is equal to zero.
Int16  :  -2 is less than zero.
Int32  :  -3 is less than zero.
Int64  :  -4 is less than zero.
Single :   0 is equal to zero.
Double :   6 is greater than zero.
Decimal:  -7 is less than zero.

The following type is not CLS-compliant.
SByte  : -101 is less than zero.
*/
``````
``````// This example demonstrates Math.Sign()
using System;

class Sample
{
public static void Main()
{
string str = "{0}: {1,3} is {2} zero.";
string nl = Environment.NewLine;
byte     xByte1    = 0;
short    xShort1   = -2;
int      xInt1     = -3;
long     xLong1    = -4;
float    xSingle1  = 0.0f;
double   xDouble1  = 6.0;
Decimal  xDecimal1 = -7m;
nint     xIntPtr1  = 8;

// The following type is not CLS-compliant.
sbyte    xSbyte1   = -101;

Console.WriteLine(\$"{nl}Test the sign of the following types of values:");
Console.WriteLine(str, "Byte   ", xByte1, Test(Math.Sign(xByte1)));
Console.WriteLine(str, "Int16  ", xShort1, Test(Math.Sign(xShort1)));
Console.WriteLine(str, "Int32  ", xInt1, Test(Math.Sign(xInt1)));
Console.WriteLine(str, "Int64  ", xLong1, Test(Math.Sign(xLong1)));
Console.WriteLine(str, "Single ", xSingle1, Test(Math.Sign(xSingle1)));
Console.WriteLine(str, "Double ", xDouble1, Test(Math.Sign(xDouble1)));
Console.WriteLine(str, "Decimal", xDecimal1, Test(Math.Sign(xDecimal1)));
Console.WriteLine(str, "IntPtr", xIntPtr1, Test(Math.Sign(xIntPtr1)));

Console.WriteLine(\$"{nl}The following type is not CLS-compliant.");
Console.WriteLine(str, "SByte  ", xSbyte1, Test(Math.Sign(xSbyte1)));
}

public static string Test(int compare)
{
if (compare == 0)
return "equal to";
else if (compare < 0)
return "less than";
else
return "greater than";
}
}
/*
This example produces the following results:

Test the sign of the following types of values:
Byte   :   0 is equal to zero.
Int16  :  -2 is less than zero.
Int32  :  -3 is less than zero.
Int64  :  -4 is less than zero.
Single :   0 is equal to zero.
Double :   6 is greater than zero.
Decimal:  -7 is less than zero.
IntPtr:    8 is greater than zero.

The following type is not CLS-compliant.
SByte  : -101 is less than zero.
*/
``````
``````// This example demonstrates Math.Sign()
// In F#, the sign function may be used instead
open System

let test = function
| 0 ->
"equal to"
| x when x < 0 ->
"less than"
| _ ->
"greater than"

let print typ a b =
printfn \$"{typ}: {a,3} is {b} zero."

let xByte1    = 0uy
let xShort1   = -2s
let xInt1     = -3
let xLong1    = -4L
let xSingle1  = 0f
let xDouble1  = 6.
let xDecimal1 = -7m
let xIntPtr1  = 8

// The following type is not CLS-compliant.
let xSbyte1   = -101y

printfn "\nTest the sign of the following types of values:"
print "Byte   " xByte1 (test (Math.Sign xByte1))
print "Int16  " xShort1 (test (Math.Sign xShort1))
print "Int32  " xInt1 (test (Math.Sign xInt1))
print "Int64  " xLong1 (test (Math.Sign xLong1))
print "Single " xSingle1 (test (Math.Sign xSingle1))
print "Double " xDouble1 (test (Math.Sign xDouble1))
print "Decimal" xDecimal1 (test (Math.Sign xDecimal1))
print "IntPtr"  xIntPtr1 (test (Math.Sign xIntPtr1))

printfn "\nThe following type is not CLS-compliant."
print "SByte  " xSbyte1 (test (Math.Sign xSbyte1))

// This example produces the following results:
//     Test the sign of the following types of values:
//     Byte   :   0 is equal to zero.
//     Int16  :  -2 is less than zero.
//     Int32  :  -3 is less than zero.
//     Int64  :  -4 is less than zero.
//     Single :   0 is equal to zero.
//     Double :   6 is greater than zero.
//     Decimal:  -7 is less than zero.
//     IntPtr:    8 is greater than zero.
//
//     The following type is not CLS-compliant.
//     SByte  : -101 is less than zero.
``````
``````' This example demonstrates Math.Sign()
Class Sample
Public Shared Sub Main()
Dim str As String = "{0}: {1,3} is {2} zero."
Dim nl As String = Environment.NewLine

Dim xByte1 As Byte = 0
Dim xShort1 As Short = -2
Dim xInt1 As Integer = -3
Dim xLong1 As Long = -4
Dim xSingle1 As Single = 0F
Dim xDouble1 As Double = 6.0
Dim xDecimal1 As [Decimal] = -7D

' The following type is not CLS-compliant.
Dim xSbyte1 As SByte = -101

Console.WriteLine("{0}Test the sign of the following types of values:", nl)
Console.WriteLine(str, "Byte   ", xByte1, Test(Math.Sign(xByte1)))
Console.WriteLine(str, "Int16  ", xShort1, Test(Math.Sign(xShort1)))
Console.WriteLine(str, "Int32  ", xInt1, Test(Math.Sign(xInt1)))
Console.WriteLine(str, "Int64  ", xLong1, Test(Math.Sign(xLong1)))
Console.WriteLine(str, "Single ", xSingle1, Test(Math.Sign(xSingle1)))
Console.WriteLine(str, "Double ", xDouble1, Test(Math.Sign(xDouble1)))
Console.WriteLine(str, "Decimal", xDecimal1, Test(Math.Sign(xDecimal1)))
'
Console.WriteLine("{0}The following type is not CLS-compliant.", nl)
Console.WriteLine(str, "SByte  ", xSbyte1, Test(Math.Sign(xSbyte1)))
End Sub
'
Public Shared Function Test([compare] As Integer) As [String]
If [compare] = 0 Then
Return "equal to"
ElseIf [compare] < 0 Then
Return "less than"
Else
Return "greater than"
End If
End Function 'Test
End Class
'
'This example produces the following results:
'
'Test the sign of the following types of values:
'Byte   :   0 is equal to zero.
'Int16  :  -2 is less than zero.
'Int32  :  -3 is less than zero.
'Int64  :  -4 is less than zero.
'Single :   0 is equal to zero.
'Double :   6 is greater than zero.
'Decimal:  -7 is less than zero.
'
'The following type is not CLS-compliant.
'SByte  : -101 is less than zero.
``````

## Sign(Int32)

Returns an integer that indicates the sign of a 32-bit signed integer.

``````public:
static int Sign(int value);``````
``public static int Sign (int value);``
``static member Sign : int -> int``
``Public Shared Function Sign (value As Integer) As Integer``

value
Int32

A signed number.

#### Returns

A number that indicates the sign of `value`, as shown in the following table.

Return value Meaning
-1 `value` is less than zero.
0 `value` is equal to zero.
1 `value` is greater than zero.

### Examples

The following example demonstrates how to use the Sign(Int32) method to determine the sign of an Int32 value and display it to the console.

``````// This example demonstrates Math.Sign()
using namespace System;
String^ Test( int compare )
{
if ( compare == 0 )
return "equal to";
else
if ( compare < 0 )
return "less than";
else
return "greater than";
}

int main()
{
String^ str = "{0}: {1,3} is {2} zero.";
String^ nl = Environment::NewLine;
Byte xByte1 = 0;
short xShort1 = -2;
int xInt1 = -3;
long xLong1 = -4;
float xSingle1 = 0.0f;
double xDouble1 = 6.0;
Decimal xDecimal1 = -7;

// The following type is not CLS-compliant.
SByte xSbyte1 = -101;
Console::WriteLine( "{0}Test the sign of the following types of values:", nl );
Console::WriteLine( str, "Byte   ", xByte1, Test( Math::Sign( xByte1 ) ) );
Console::WriteLine( str, "Int16  ", xShort1, Test( Math::Sign( xShort1 ) ) );
Console::WriteLine( str, "Int32  ", xInt1, Test( Math::Sign( xInt1 ) ) );
Console::WriteLine( str, "Int64  ", xLong1, Test( Math::Sign( xLong1 ) ) );
Console::WriteLine( str, "Single ", xSingle1, Test( Math::Sign( xSingle1 ) ) );
Console::WriteLine( str, "Double ", xDouble1, Test( Math::Sign( xDouble1 ) ) );
Console::WriteLine( str, "Decimal", xDecimal1, Test( Math::Sign( xDecimal1 ) ) );

//
Console::WriteLine( "{0}The following type is not CLS-compliant.", nl );
Console::WriteLine( str, "SByte  ", xSbyte1, Test( Math::Sign( xSbyte1 ) ) );
}

/*
This example produces the following results:

Test the sign of the following types of values:
Byte   :   0 is equal to zero.
Int16  :  -2 is less than zero.
Int32  :  -3 is less than zero.
Int64  :  -4 is less than zero.
Single :   0 is equal to zero.
Double :   6 is greater than zero.
Decimal:  -7 is less than zero.

The following type is not CLS-compliant.
SByte  : -101 is less than zero.
*/
``````
``````// This example demonstrates Math.Sign()
using System;

class Sample
{
public static void Main()
{
string str = "{0}: {1,3} is {2} zero.";
string nl = Environment.NewLine;
byte     xByte1    = 0;
short    xShort1   = -2;
int      xInt1     = -3;
long     xLong1    = -4;
float    xSingle1  = 0.0f;
double   xDouble1  = 6.0;
Decimal  xDecimal1 = -7m;
nint     xIntPtr1  = 8;

// The following type is not CLS-compliant.
sbyte    xSbyte1   = -101;

Console.WriteLine(\$"{nl}Test the sign of the following types of values:");
Console.WriteLine(str, "Byte   ", xByte1, Test(Math.Sign(xByte1)));
Console.WriteLine(str, "Int16  ", xShort1, Test(Math.Sign(xShort1)));
Console.WriteLine(str, "Int32  ", xInt1, Test(Math.Sign(xInt1)));
Console.WriteLine(str, "Int64  ", xLong1, Test(Math.Sign(xLong1)));
Console.WriteLine(str, "Single ", xSingle1, Test(Math.Sign(xSingle1)));
Console.WriteLine(str, "Double ", xDouble1, Test(Math.Sign(xDouble1)));
Console.WriteLine(str, "Decimal", xDecimal1, Test(Math.Sign(xDecimal1)));
Console.WriteLine(str, "IntPtr", xIntPtr1, Test(Math.Sign(xIntPtr1)));

Console.WriteLine(\$"{nl}The following type is not CLS-compliant.");
Console.WriteLine(str, "SByte  ", xSbyte1, Test(Math.Sign(xSbyte1)));
}

public static string Test(int compare)
{
if (compare == 0)
return "equal to";
else if (compare < 0)
return "less than";
else
return "greater than";
}
}
/*
This example produces the following results:

Test the sign of the following types of values:
Byte   :   0 is equal to zero.
Int16  :  -2 is less than zero.
Int32  :  -3 is less than zero.
Int64  :  -4 is less than zero.
Single :   0 is equal to zero.
Double :   6 is greater than zero.
Decimal:  -7 is less than zero.
IntPtr:    8 is greater than zero.

The following type is not CLS-compliant.
SByte  : -101 is less than zero.
*/
``````
``````// This example demonstrates Math.Sign()
// In F#, the sign function may be used instead
open System

let test = function
| 0 ->
"equal to"
| x when x < 0 ->
"less than"
| _ ->
"greater than"

let print typ a b =
printfn \$"{typ}: {a,3} is {b} zero."

let xByte1    = 0uy
let xShort1   = -2s
let xInt1     = -3
let xLong1    = -4L
let xSingle1  = 0f
let xDouble1  = 6.
let xDecimal1 = -7m
let xIntPtr1  = 8

// The following type is not CLS-compliant.
let xSbyte1   = -101y

printfn "\nTest the sign of the following types of values:"
print "Byte   " xByte1 (test (Math.Sign xByte1))
print "Int16  " xShort1 (test (Math.Sign xShort1))
print "Int32  " xInt1 (test (Math.Sign xInt1))
print "Int64  " xLong1 (test (Math.Sign xLong1))
print "Single " xSingle1 (test (Math.Sign xSingle1))
print "Double " xDouble1 (test (Math.Sign xDouble1))
print "Decimal" xDecimal1 (test (Math.Sign xDecimal1))
print "IntPtr"  xIntPtr1 (test (Math.Sign xIntPtr1))

printfn "\nThe following type is not CLS-compliant."
print "SByte  " xSbyte1 (test (Math.Sign xSbyte1))

// This example produces the following results:
//     Test the sign of the following types of values:
//     Byte   :   0 is equal to zero.
//     Int16  :  -2 is less than zero.
//     Int32  :  -3 is less than zero.
//     Int64  :  -4 is less than zero.
//     Single :   0 is equal to zero.
//     Double :   6 is greater than zero.
//     Decimal:  -7 is less than zero.
//     IntPtr:    8 is greater than zero.
//
//     The following type is not CLS-compliant.
//     SByte  : -101 is less than zero.
``````
``````' This example demonstrates Math.Sign()
Class Sample
Public Shared Sub Main()
Dim str As String = "{0}: {1,3} is {2} zero."
Dim nl As String = Environment.NewLine

Dim xByte1 As Byte = 0
Dim xShort1 As Short = -2
Dim xInt1 As Integer = -3
Dim xLong1 As Long = -4
Dim xSingle1 As Single = 0F
Dim xDouble1 As Double = 6.0
Dim xDecimal1 As [Decimal] = -7D

' The following type is not CLS-compliant.
Dim xSbyte1 As SByte = -101

Console.WriteLine("{0}Test the sign of the following types of values:", nl)
Console.WriteLine(str, "Byte   ", xByte1, Test(Math.Sign(xByte1)))
Console.WriteLine(str, "Int16  ", xShort1, Test(Math.Sign(xShort1)))
Console.WriteLine(str, "Int32  ", xInt1, Test(Math.Sign(xInt1)))
Console.WriteLine(str, "Int64  ", xLong1, Test(Math.Sign(xLong1)))
Console.WriteLine(str, "Single ", xSingle1, Test(Math.Sign(xSingle1)))
Console.WriteLine(str, "Double ", xDouble1, Test(Math.Sign(xDouble1)))
Console.WriteLine(str, "Decimal", xDecimal1, Test(Math.Sign(xDecimal1)))
'
Console.WriteLine("{0}The following type is not CLS-compliant.", nl)
Console.WriteLine(str, "SByte  ", xSbyte1, Test(Math.Sign(xSbyte1)))
End Sub
'
Public Shared Function Test([compare] As Integer) As [String]
If [compare] = 0 Then
Return "equal to"
ElseIf [compare] < 0 Then
Return "less than"
Else
Return "greater than"
End If
End Function 'Test
End Class
'
'This example produces the following results:
'
'Test the sign of the following types of values:
'Byte   :   0 is equal to zero.
'Int16  :  -2 is less than zero.
'Int32  :  -3 is less than zero.
'Int64  :  -4 is less than zero.
'Single :   0 is equal to zero.
'Double :   6 is greater than zero.
'Decimal:  -7 is less than zero.
'
'The following type is not CLS-compliant.
'SByte  : -101 is less than zero.
``````