Decimal.Truncate(Decimal) Method

Reference

Definition

Namespace:: System

Assembly:: System.Runtime.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Source:: Decimal.cs

Source:: Decimal.cs

Source:: Decimal.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Returns the integral digits of the specified Decimal; any fractional digits are discarded.

public:
 static System::Decimal Truncate(System::Decimal d);

public:
 static System::Decimal Truncate(System::Decimal d) = System::Numerics::IFloatingPoint<System::Decimal>::Truncate;

public static decimal Truncate (decimal d);

static member Truncate : decimal -> decimal

Public Shared Function Truncate (d As Decimal) As Decimal

Parameters

d: Decimal

The decimal number to truncate.

Returns

Decimal

The result of d rounded toward zero, to the nearest whole number.

Implements

Truncate(TSelf)

Examples

The following code example uses the Truncate method to discard the fractional digits of several Decimal values.

// 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
*/

// 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
*/

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

let dataFmt obj1 obj2 = printfn $"{obj1,-30}{obj2,26}"

// Display decimal parameters and the method results.
let showDecimalFloorNegTrunc (argument: decimal) =
    printfn ""
    dataFmt "decimal argument" argument
    dataFmt "Decimal.Negate( argument )" (Decimal.Negate argument)
    dataFmt "decimal.Floor( argument )" (Decimal.Floor argument)
    dataFmt "decimal.Truncate( argument )" (Decimal.Truncate argument)

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

// Create pairs of decimal objects.
showDecimalFloorNegTrunc 0M
showDecimalFloorNegTrunc 123.456M
showDecimalFloorNegTrunc -123.456M
showDecimalFloorNegTrunc (Decimal(1230000000, 0, 0, true, 7uy))
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

' Example of the Decimal.Negate, Decimal.Floor, and Decimal.Truncate 
' methods. 
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

Remarks

This method rounds d toward zero, to the nearest whole number, which corresponds to discarding any digits after the decimal point.

Applies to

次の方法で共有