Returns the largest integer less than or equal to the specified doubleprecision floatingpoint number.
Namespace:
SystemAssembly:
mscorlib (in mscorlib.dll)
Public Shared Function Floor (
d As Double
) As Double
Parameters

d

Type:
System.Double
A doubleprecision floatingpoint number.
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.
The following example illustrates the Math.Floor(Double) method and contrasts it with the Ceiling(Double) method.
Dim values() As Double = {7.03, 7.64, 0.12, 0.12, 7.1, 7.6}
Console.WriteLine(" Value Ceiling Floor")
Console.WriteLine()
For Each value As Double 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
Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in:
portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
Return to top