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# Math.Floor Method (Decimal)

Visual Studio 2008

Returns the largest integer less than or equal to the specified decimal number.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

## Syntax

```'Declaration
Public Shared Function Floor ( _
d As Decimal _
) As Decimal
'Usage
Dim d As Decimal
Dim returnValue As Decimal

returnValue = Math.Floor(d)
```

#### Parameters

d
Type: System.Decimal

A decimal number.

#### Return Value

Type: System.Decimal
The largest integer less than or equal to d.

## Remarks

The behavior of this method follows IEEE Standard 754, section 4. This kind of rounding is sometimes called rounding toward negative infinity. In other words, if d is positive, any fractional component is truncated. If d is negative, the presence of any fractional component causes it to be rounded to the smaller integer. The operation of this method differs from the Ceiling method, which supports rounding toward positive infinity.

## Examples

The following example illustrates the Math.Floor(Decimal) method and contrasts it with the Ceiling(Decimal) method.

```Dim values() As Decimal = {7.03d, 7.64d, 0.12d, -0.12d, -7.1d, -7.6d}
Console.WriteLine("  Value          Ceiling          Floor")
Console.WriteLine()
For Each value As Decimal In values
Console.WriteLine("{0,7} {1,16} {2,14}", _
value, Math.Ceiling(value), Math.Floor(value))
Next
' The example displays the following output to the console:
'         Value          Ceiling          Floor
'
'          7.03                8              7
'          7.64                8              7
'          0.12                1              0
'         -0.12                0             -1
'          -7.1               -7             -8
'          -7.6               -7             -8
```

## Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

## Version Information

#### .NET Framework

Supported in: 3.5, 3.0, 2.0