Math.Sign Method (Int64)
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Returns a value indicating the sign of a 64-bit signed integer.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public Shared Function Sign ( _
value As Long _
) As Integer
public static int Sign(
long value
)
Parameters
- value
Type: System.Int64
A signed number.
Return Value
Type: System.Int32
A number indicating the sign of value.
Number |
Description |
|---|---|
-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 method to determine the sign of a Int64 value and print it to the console.
' This example demonstrates Math.Sign()
Class Example
Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
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 = 0.0F
Dim xDouble1 As Double = 6.0
Dim xDecimal1 As [Decimal] = -7D
' The following type is not CLS-compliant.
Dim xSbyte1 As SByte = -101
outputBlock.Text += String.Format("{0}Test the sign of the following types of values:", nl) & vbCrLf
outputBlock.Text += String.Format(str, "Byte ", xByte1, Test(Math.Sign(xByte1))) & vbCrLf
outputBlock.Text += String.Format(str, "Int16 ", xShort1, Test(Math.Sign(xShort1))) & vbCrLf
outputBlock.Text += String.Format(str, "Int32 ", xInt1, Test(Math.Sign(xInt1))) & vbCrLf
outputBlock.Text += String.Format(str, "Int64 ", xLong1, Test(Math.Sign(xLong1))) & vbCrLf
outputBlock.Text += String.Format(str, "Single ", xSingle1, Test(Math.Sign(xSingle1))) & vbCrLf
outputBlock.Text += String.Format(str, "Double ", xDouble1, Test(Math.Sign(xDouble1))) & vbCrLf
outputBlock.Text += String.Format(str, "Decimal", xDecimal1, Test(Math.Sign(xDecimal1))) & vbCrLf
'
outputBlock.Text += String.Format("{0}The following type is not CLS-compliant.", nl) & vbCrLf
outputBlock.Text += String.Format(str, "SByte ", xSbyte1, Test(Math.Sign(xSbyte1))) & vbCrLf
End Sub 'Main
'
Public Shared Function Test(ByVal [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 'Sample
'
'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 Example
{
public static void Demo(System.Windows.Controls.TextBlock outputBlock)
{
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;
// The following type is not CLS-compliant.
sbyte xSbyte1 = -101;
outputBlock.Text += String.Format("{0}Test the sign of the following types of values:", nl) + "\n";
outputBlock.Text += String.Format(str, "Byte ", xByte1, Test(Math.Sign(xByte1))) + "\n";
outputBlock.Text += String.Format(str, "Int16 ", xShort1, Test(Math.Sign(xShort1))) + "\n";
outputBlock.Text += String.Format(str, "Int32 ", xInt1, Test(Math.Sign(xInt1))) + "\n";
outputBlock.Text += String.Format(str, "Int64 ", xLong1, Test(Math.Sign(xLong1))) + "\n";
outputBlock.Text += String.Format(str, "Single ", xSingle1, Test(Math.Sign(xSingle1))) + "\n";
outputBlock.Text += String.Format(str, "Double ", xDouble1, Test(Math.Sign(xDouble1))) + "\n";
outputBlock.Text += String.Format(str, "Decimal", xDecimal1, Test(Math.Sign(xDecimal1))) + "\n";
//
outputBlock.Text += String.Format("{0}The following type is not CLS-compliant.", nl) + "\n";
outputBlock.Text += String.Format(str, "SByte ", xSbyte1, Test(Math.Sign(xSbyte1))) + "\n";
}
//
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.
The following type is not CLS-compliant.
SByte : -101 is less than zero.
*/
Version Information
Silverlight
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
XNA Framework
Supported in: Xbox 360, Windows Phone OS 7.0
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.