Returns the smallest integral value that is greater than or equal to the specified doubleprecision floatingpoint number.
Namespace:
SystemAssembly:
mscorlib (in mscorlib.dll)
Public Shared Function Ceiling (
a As Double
) As Double
Parameters

a

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 positive infinity. In other words, if a is positive, the presence of any fractional component causes a to be rounded to the next highest integer. If a is negative, the rounding operation causes any fractional component of a to be discarded. The operation of this method differs from the Floor(Double) method, which supports rounding toward negative infinity.
The following example illustrates the Math.Ceiling(Double) method and contrasts it with the Floor(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
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