# Decimal.Ceiling(Decimal) メソッド

## 定義

``````public:
static System::Decimal Ceiling(System::Decimal d);``````
``public static decimal Ceiling (decimal d);``
``static member Ceiling : decimal -> decimal``
``Public Shared Function Ceiling (d As Decimal) As Decimal``

#### パラメーター

d
Decimal

10 進数。A decimal number.

#### 戻り値

`d` パラメーターの値以上の最小の整数値。The smallest integral value that is greater than or equal to the `d` parameter. このメソッドは、整数型ではなく Decimal を返します。Note that this method returns a Decimal instead of an integral type.

## 例

``````using System;

public class Example
{
public static void Main()
{
decimal[] values = {12.6m, 12.1m, 9.5m, 8.16m, .1m, -.1m,  -1.1m,
-1.9m, -3.9m};
Console.WriteLine("{0,-8} {1,10} {2,10}\n",
"Value", "Ceiling", "Floor");
foreach (decimal value in values)
Console.WriteLine("{0,-8} {1,10} {2,10}", value,
Decimal.Ceiling(value), Decimal.Floor(value));
}
}
// The example displays the following output:
//       Value       Ceiling      Floor
//
//       12.6             13         12
//       12.1             13         12
//       9.5              10          9
//       8.16              9          8
//       0.1               1          0
//       -0.1              0         -1
//       -1.1             -1         -2
//       -1.9             -1         -2
//       -3.9             -3         -4
``````
``````Module Example
Public Sub Main()
Dim values() As Decimal = {12.6d, 12.1d, 9.5d, 8.16d, .1d, -.1d,
-1.1d, -1.9d, -3.9d}
Console.WriteLine("{0,-8} {1,10} {2,10}",
"Value", "Ceiling", "Floor")
Console.WriteLine()
For Each value As Decimal In values
Console.WriteLine("{0,-8} {1,10} {2,10}", value,
Decimal.Ceiling(value), Decimal.Floor(value))
Next
End Sub
End Module
' The example displays the following output:
'       Value       Ceiling      Floor
'
'       12.6             13         12
'       12.1             13         12
'       9.5              10          9
'       8.16              9          8
'       0.1               1          0
'       -0.1              0         -1
'       -1.1             -1         -2
'       -1.9             -1         -2
'       -3.9             -3         -4
``````

## 注釈

このメソッドの動作は、IEEE Standard 754 のセクション4に従います。The behavior of this method follows IEEE Standard 754, section 4. この種類の丸め処理は、正の無限大方向の丸めと呼ばれることもあります。This kind of rounding is sometimes called rounding toward positive infinity. つまり、`d` が正である場合、小数部分が存在すると、`d` は次の最大の整数に丸められます。In other words, if `d` is positive, the presence of any fractional component causes `d` to be rounded to the next highest integer. `d` が負の場合、丸め処理によって `d` の小数部が破棄されます。If `d` is negative, the rounding operation causes any fractional component of `d` to be discarded. このメソッドの操作は、負の無限大への丸め処理をサポートする Floor メソッドとは異なります。The operation of this method differs from the Floor method, which supports rounding toward negative infinity.