Decimal.Negate メソッド

.NET Framework クラス ライブラリ リファレンス

Decimal.Negate メソッド

指定した Decimal 値に -1 を乗算した結果を返します。

名前空間: System
アセンブリ: mscorlib (mscorlib.dll 内)
構文

Visual Basic (宣言)

Public Shared Function Negate
 ( _
    d As Decimal _
) As Decimal

Visual Basic (使用法)

Dim d As Decimal
Dim returnValue As Decimal

returnValue = Decimal.Negate(d)

C#

public static decimal Negate (
    decimal d
)

C++

public:
static Decimal Negate (
    Decimal d
)

J#

public static Decimal Negate (
    Decimal d
)

JScript

public static function Negate
 (
    d : decimal
) : decimal

パラメータ

d

Decimal。

戻り値
値が d で、符号が逆の Decimal。 または d が 0 の場合は 0。

使用例

Negate メソッドを使用して、複数の Decimal 値の符号を変更するコード例を次に示します。

Visual Basic

' Example of the Decimal.Negate, Decimal.Floor, and Decimal.Truncate
 
' methods. 
Imports System
Imports Microsoft.VisualBasic

Module DecimalFloorNegTruncDemo
    
    Const dataFmt As String
 = "{0,-30}{1,26}"

    ' Display Decimal parameters and their product, quotient, and 
    ' remainder.
    Sub ShowDecimalFloorNegTrunc( Argument as
 Decimal )

        Console.WriteLine( )
        Console.WriteLine( dataFmt, "Decimal Argument",
 Argument )
        Console.WriteLine( dataFmt, _
            "Decimal.Negate( Argument )", _
            Decimal.Negate( Argument ) )
        Console.WriteLine( dataFmt, _
            "Decimal.Floor( Argument )", _
            Decimal.Floor( Argument ) )
        Console.WriteLine( dataFmt, _
            "Decimal.Truncate( Argument )", _
            Decimal.Truncate( Argument ) )
    End Sub

    Sub Main( )
        Console.WriteLine( "This example of the "
 & vbCrLf & _
            "  Decimal.Negate( Decimal ), " &
 vbCrLf & _
            "  Decimal.Floor( Decimal ), and " &
 vbCrLf & _
            "  Decimal.Truncate( Decimal ) " &
 vbCrLf & _
            "methods generates the following output."
 )

        ' Create pairs of Decimal objects.
        ShowDecimalFloorNegTrunc( 0D ) 
        ShowDecimalFloorNegTrunc( 123.456D ) 
        ShowDecimalFloorNegTrunc( -123.456D ) 
        ShowDecimalFloorNegTrunc( _
            new Decimal( 1230000000, 0, 0,
 True, 7 ) )
        ShowDecimalFloorNegTrunc( -9999999999.9999999999D )
    End Sub
End Module 

' This example of the
'   Decimal.Negate( Decimal ),
'   Decimal.Floor( Decimal ), and
'   Decimal.Truncate( Decimal )
' methods generates the following output.
' 
' Decimal Argument                                       0
' Decimal.Negate( Argument )                             0
' Decimal.Floor( Argument )                              0
' Decimal.Truncate( Argument )                           0
' 
' Decimal Argument                                 123.456
' Decimal.Negate( Argument )                      -123.456
' Decimal.Floor( Argument )                            123
' Decimal.Truncate( Argument )                         123
' 
' Decimal Argument                                -123.456
' Decimal.Negate( Argument )                       123.456
' Decimal.Floor( Argument )                           -124
' Decimal.Truncate( Argument )                        -123
' 
' Decimal Argument                            -123.0000000
' Decimal.Negate( Argument )                   123.0000000
' Decimal.Floor( Argument )                           -123
' Decimal.Truncate( Argument )                        -123
' 
' Decimal Argument                  -9999999999.9999999999
' Decimal.Negate( Argument )         9999999999.9999999999
' Decimal.Floor( Argument )                   -10000000000
' Decimal.Truncate( Argument )                 -9999999999

C#

// Example of the decimal.Negate, decimal.Floor, and decimal.Truncate
 
// methods. 
using System;

class DecimalFloorNegTruncDemo
{
    const string dataFmt = "{0,-30}{1
,26}";

    // Display decimal parameters and the method results.
    public static void ShowDecimalFloorNegTrunc(
 decimal Argument )
    {
        Console.WriteLine( );
        Console.WriteLine( dataFmt, "decimal Argument", Argument );
        Console.WriteLine( dataFmt, "decimal.Negate( Argument )", 
            decimal.Negate( Argument ) );
        Console.WriteLine( dataFmt, "decimal.Floor( Argument )", 
            decimal.Floor( Argument ) );
        Console.WriteLine( dataFmt, "decimal.Truncate( Argument )", 
            decimal.Truncate( Argument ) );
    }

    public static void Main(
 )
    {
        Console.WriteLine( "This example of the \n" +
            "  decimal.Negate( decimal ), \n" +
            "  decimal.Floor( decimal ), and \n" +
            "  decimal.Truncate( decimal ) \n" +
            "methods generates the following output." );

        // Create pairs of decimal objects.
        ShowDecimalFloorNegTrunc( 0M );
        ShowDecimalFloorNegTrunc( 123.456M );
        ShowDecimalFloorNegTrunc( -123.456M );
        ShowDecimalFloorNegTrunc( 
            new decimal( 1230000000, 0, 0, true,
 7 ) );
        ShowDecimalFloorNegTrunc( -9999999999.9999999999M );
    }
}

/*
This example of the
  decimal.Negate( decimal ),
  decimal.Floor( decimal ), and
  decimal.Truncate( decimal )
methods generates the following output.

decimal Argument                                       0
decimal.Negate( Argument )                             0
decimal.Floor( Argument )                              0
decimal.Truncate( Argument )                           0

decimal Argument                                 123.456
decimal.Negate( Argument )                      -123.456
decimal.Floor( Argument )                            123
decimal.Truncate( Argument )                         123

decimal Argument                                -123.456
decimal.Negate( Argument )                       123.456
decimal.Floor( Argument )                           -124
decimal.Truncate( Argument )                        -123

decimal Argument                            -123.0000000
decimal.Negate( Argument )                   123.0000000
decimal.Floor( Argument )                           -123
decimal.Truncate( Argument )                        -123

decimal Argument                  -9999999999.9999999999
decimal.Negate( Argument )         9999999999.9999999999
decimal.Floor( Argument )                   -10000000000
decimal.Truncate( Argument )                 -9999999999
*/ 

C++

// Example of the Decimal::Negate, Decimal::Floor, and 
// Decimal::Truncate methods. 
using namespace System;

// Display Decimal parameters and the method results.
void ShowDecimalFloorNegTrunc( Decimal Argument )
{
   String^ dataFmt = "{0,-30}{1,26}";
   Console::WriteLine();
   Console::WriteLine( dataFmt, "Decimal Argument", Argument );
   Console::WriteLine( dataFmt, "Decimal::Negate( Argument )", Decimal::Negate(
 Argument ) );
   Console::WriteLine( dataFmt, "Decimal::Floor( Argument )", Decimal::Floor(
 Argument ) );
   Console::WriteLine( dataFmt, "Decimal::Truncate( Argument )", Decimal::Truncate(
 Argument ) );
}

int main()
{
   Console::WriteLine( "This example of the \n"
   "  Decimal::Negate( Decimal ), \n"
   "  Decimal::Floor( Decimal ), and \n"
   "  Decimal::Truncate( Decimal ) \n"
   "methods generates the following output." );
   
   // Create pairs of Decimal objects.
   ShowDecimalFloorNegTrunc( Decimal::Parse( "0" ) );
   ShowDecimalFloorNegTrunc( Decimal::Parse( "123.456" ) );
   ShowDecimalFloorNegTrunc( Decimal::Parse( "-123.456" ) );
   ShowDecimalFloorNegTrunc( Decimal(1230000000,0,0,true,7) );
   ShowDecimalFloorNegTrunc( Decimal::Parse( "-9999999999.9999999999" )
 );
}

/*
This example of the
  Decimal::Negate( Decimal ),
  Decimal::Floor( Decimal ), and
  Decimal::Truncate( Decimal )
methods generates the following output.

Decimal Argument                                       0
Decimal::Negate( Argument )                            0
Decimal::Floor( Argument )                             0
Decimal::Truncate( Argument )                          0

Decimal Argument                                 123.456
Decimal::Negate( Argument )                     -123.456
Decimal::Floor( Argument )                           123
Decimal::Truncate( Argument )                        123

Decimal Argument                                -123.456
Decimal::Negate( Argument )                      123.456
Decimal::Floor( Argument )                          -124
Decimal::Truncate( Argument )                       -123

Decimal Argument                            -123.0000000
Decimal::Negate( Argument )                  123.0000000
Decimal::Floor( Argument )                          -123
Decimal::Truncate( Argument )                       -123

Decimal Argument                  -9999999999.9999999999
Decimal::Negate( Argument )        9999999999.9999999999
Decimal::Floor( Argument )                  -10000000000
Decimal::Truncate( Argument )                -9999999999
*/

J#

// Example of the decimal.Negate, decimal.Floor, and decimal.Truncate
 
// methods. 
import System.*;

class DecimalFloorNegTruncDemo
{
    private static String dataFmt = "{0
,-30}{1,26}";

    // Display decimal parameters and the method results.
    public static void ShowDecimalFloorNegTrunc(System.Decimal
 argument)
    {
        Console.WriteLine();
        Console.WriteLine(dataFmt, "decimal argument", argument);
        Console.WriteLine(dataFmt, "decimal.Negate( argument )",
            System.Decimal.Negate(argument));
        Console.WriteLine(dataFmt, "decimal.Floor( argument )", 
            System.Decimal.Floor(argument));
        Console.WriteLine(dataFmt, "decimal.Truncate( argument )",
        System.Decimal.Truncate(argument));
    } //ShowDecimalFloorNegTrunc

    public static void main(String[]
 args)
    {
        Console.WriteLine(("This example of the \n"
            + "  decimal.Negate( decimal ), \n" 
            + "  decimal.Floor( decimal ), and \n" 
            + "  decimal.Truncate( decimal ) \n" 
            + "methods generates the following output."));

        // Create pairs of decimal objects.
        ShowDecimalFloorNegTrunc(System.Convert.ToDecimal(0));
        ShowDecimalFloorNegTrunc(System.Convert.ToDecimal(123.456));
        ShowDecimalFloorNegTrunc(System.Convert.ToDecimal(-123.456));
        ShowDecimalFloorNegTrunc(new System.Decimal(1230000000,
 0, 0, true,
            System.Convert.ToByte(7)));
        ShowDecimalFloorNegTrunc(System.Convert.ToDecimal(
            -9999999999.9999999999));
    } //main
} //DecimalFloorNegTruncDemo

/*
This example of the
  decimal.Negate( decimal ),
  decimal.Floor( decimal ), and
  decimal.Truncate( decimal )
methods generates the following output.

decimal argument                                       0
decimal.Negate( argument )                             0
decimal.Floor( argument )                              0
decimal.Truncate( argument )                           0

decimal argument                                 123.456
decimal.Negate( argument )                      -123.456
decimal.Floor( argument )                            123
decimal.Truncate( argument )                         123

decimal argument                                -123.456
decimal.Negate( argument )                       123.456
decimal.Floor( argument )                           -124
decimal.Truncate( argument )                        -123

decimal argument                            -123.0000000
decimal.Negate( argument )                   123.0000000
decimal.Floor( argument )                           -123
decimal.Truncate( argument )                        -123

decimal argument                  -9999999999.9999999999
decimal.Negate( argument )         9999999999.9999999999
decimal.Floor( argument )                   -10000000000
decimal.Truncate( argument )                 -9999999999
*/

プラットフォーム

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

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0
.NET Compact Framework
サポート対象 : 2.0、1.0

参照

関連項目
Decimal 構造体
Decimal メンバ
System 名前空間