Rounds a decimal value to a specified precision.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
Visual Basic (Declaration)
Public Shared Function Round ( _
d As Decimal, _
decimals As Integer _
) As Decimal
Dim d As Decimal
Dim decimals As Integer
Dim returnValue As Decimal
returnValue = Math.Round(d, decimals)
public static decimal Round (
decimal d,
int decimals
)
public:
static Decimal Round (
Decimal d,
int decimals
)
public static Decimal Round (
Decimal d,
int decimals
)
public static function Round (
d : decimal,
decimals : int
) : decimal
Parameters
- d
A decimal number to be rounded.
- decimals
The number of significant decimal places (precision) in the return value.
Return Value
The number nearest
d with a precision equal to
decimals. If
d is halfway between two numbers, one of which is even and the other odd, then the even number is returned. If the precision of
d is less than
decimals, then
d is returned unchanged.
Exceptions
Remarks
The decimals parameter specifies the number of significant decimal places in the return value and ranges from 0 to 28. If decimals is zero, an integer is returned.
The behavior of this method follows IEEE Standard 754, section 4. This kind of rounding is sometimes called rounding to nearest, or banker's rounding.
Example
The following example demonstrates rounding to nearest.
Math.Round(3.44, 1) 'Returns 3.4.
Math.Round(3.45, 1) 'Returns 3.4.
Math.Round(3.46, 1) 'Returns 3.5.
Math.Round(3.44, 1); //Returns 3.4.
Math.Round(3.45, 1); //Returns 3.4.
Math.Round(3.46, 1); //Returns 3.5.
Math::Round( 3.44, 1 ); //Returns 3.4.
Math::Round( 3.45, 1 ); //Returns 3.4.
Math::Round( 3.46, 1 ); //Returns 3.5.
System.Math.Round(3.44, 1); //Returns 3.4.
System.Math.Round(3.45, 1); //Returns 3.4.
System.Math.Round(3.46, 1); //Returns 3.5.
System.Math.Round(3.44, 1) //Returns 3.4.
System.Math.Round(3.45, 1) //Returns 3.4.
System.Math.Round(3.46, 1) //Returns 3.5.
Platforms
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.
Version Information
.NET Framework
Supported in: 2.0, 1.1, 1.0
.NET Compact Framework
Supported in: 2.0, 1.0
See Also