Decimal Constructors
Definitie
Belangrijk
Bepaalde informatie heeft betrekking op een voorlopige productversie die aanzienlijk kan worden gewijzigd voordat deze wordt uitgebracht. Microsoft biedt geen enkele expliciete of impliciete garanties met betrekking tot de informatie die hier wordt verstrekt.
Initialiseert een nieuw exemplaar van Decimal.
Overloads
| Name | Description |
|---|---|
| Decimal(Double) |
Initialiseert een nieuw exemplaar van Decimal de waarde van het opgegeven drijvendekommagetal met dubbele precisie. |
| Decimal(Int32) |
Initialiseert een nieuw exemplaar van Decimal de waarde van het opgegeven 32-bits ondertekende gehele getal. |
| Decimal(Int32[]) |
Initialiseert een nieuw exemplaar van Decimal een decimale waarde die wordt weergegeven in binair en in een opgegeven matrix. |
| Decimal(Int64) |
Initialiseert een nieuw exemplaar van Decimal de waarde van het opgegeven 64-bits ondertekende gehele getal. |
| Decimal(ReadOnlySpan<Int32>) |
Initialiseert een nieuw exemplaar van Decimal een decimale waarde die wordt weergegeven in binair en in de opgegeven periode. |
| Decimal(Single) |
Initialiseert een nieuw exemplaar van Decimal de waarde van het opgegeven drijvendekommagetal met één precisie. |
| Decimal(UInt32) |
Initialiseert een nieuw exemplaar van Decimal de waarde van het opgegeven 32-bits geheel getal zonder teken. |
| Decimal(UInt64) |
Initialiseert een nieuw exemplaar van Decimal de waarde van het opgegeven 64-bits geheel getal zonder teken. |
| Decimal(Int32, Int32, Int32, Boolean, Byte) |
Initialiseert een nieuw exemplaar van Decimal parameters die de samenstellende onderdelen van het exemplaar opgeven. |
Decimal(Double)
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
Initialiseert een nieuw exemplaar van Decimal de waarde van het opgegeven drijvendekommagetal met dubbele precisie.
public:
Decimal(double value);
public Decimal(double value);
new decimal : double -> decimal
Public Sub New (value As Double)
Parameters
Uitzonderingen
value is groter dan Decimal.MaxValue of kleiner dan Decimal.MinValue.
– of –
value is NaN, PositiveInfinityof NegativeInfinity.
Voorbeelden
In het volgende codevoorbeeld worden verschillende Decimal getallen gemaakt met behulp van de overbelasting van de constructor waarmee een Decimal structuur met een Double waarde wordt geïnitialiseerd.
// Example of the decimal( double ) constructor.
using System;
class DecimalCtorDoDemo
{
// Get the exception type name; remove the namespace prefix.
public static string GetExceptionType( Exception ex )
{
string exceptionType = ex.GetType( ).ToString( );
return exceptionType.Substring(
exceptionType.LastIndexOf( '.' )+1 );
}
// Create a decimal object and display its value.
public static void CreateDecimal( double value, string valToStr )
{
// Format and display the constructor.
Console.Write( "{0,-34}",
String.Format( "decimal( {0} )", valToStr ) );
try
{
// Construct the decimal value.
decimal decimalNum = new decimal( value );
// Display the value if it was created successfully.
Console.WriteLine( "{0,31}", decimalNum );
}
catch( Exception ex )
{
// Display the exception type if an exception was thrown.
Console.WriteLine( "{0,31}", GetExceptionType( ex ) );
}
}
public static void Main( )
{
Console.WriteLine( "This example of the decimal( double ) " +
"constructor \ngenerates the following output.\n" );
Console.WriteLine( "{0,-34}{1,31}", "Constructor",
"Value or Exception" );
Console.WriteLine( "{0,-34}{1,31}", "-----------",
"------------------" );
// Construct decimal objects from double values.
CreateDecimal( 1.23456789E+5, "1.23456789E+5" );
CreateDecimal( 1.234567890123E+15, "1.234567890123E+15" );
CreateDecimal( 1.2345678901234567E+25,
"1.2345678901234567E+25" );
CreateDecimal( 1.2345678901234567E+35,
"1.2345678901234567E+35" );
CreateDecimal( 1.23456789E-5, "1.23456789E-5" );
CreateDecimal( 1.234567890123E-15, "1.234567890123E-15" );
CreateDecimal( 1.2345678901234567E-25,
"1.2345678901234567E-25" );
CreateDecimal( 1.2345678901234567E-35,
"1.2345678901234567E-35" );
CreateDecimal( 1.0 / 7.0, "1.0 / 7.0" );
}
}
/*
This example of the decimal( double ) constructor
generates the following output.
Constructor Value or Exception
----------- ------------------
decimal( 1.23456789E+5 ) 123456.789
decimal( 1.234567890123E+15 ) 1234567890123000
decimal( 1.2345678901234567E+25 ) 12345678901234600000000000
decimal( 1.2345678901234567E+35 ) OverflowException
decimal( 1.23456789E-5 ) 0.0000123456789
decimal( 1.234567890123E-15 ) 0.000000000000001234567890123
decimal( 1.2345678901234567E-25 ) 0.0000000000000000000000001235
decimal( 1.2345678901234567E-35 ) 0
decimal( 1.0 / 7.0 ) 0.142857142857143
*/
// Example of the decimal( double ) constructor.
open System
// Get the exception type name; remove the namespace prefix.
let getExceptionType (ex: exn) =
let exceptionType = ex.GetType() |> string
exceptionType.Substring(exceptionType.LastIndexOf '.' + 1)
// Create a decimal object and display its value.
let createDecimal (value: double) valToStr =
// Format and display the constructor.
printf "%-34s" $"decimal( {valToStr} )"
try
// Construct the decimal value.
let decimalNum = Decimal value
// Display the value if it was created successfully.
printfn $"{decimalNum,31}"
with ex ->
// Display the exception type if an exception was thrown.
printfn $"{getExceptionType ex,31}"
printfn $"This example of the decimal( double ) constructor \ngenerates the following output.\n"
printfn "%-34s%31s" "Constructor" "Value or Exception"
printfn "%-34s%31s" "-----------" "------------------"
// Construct decimal objects from double values.
createDecimal 1.23456789E+5 "1.23456789E+5"
createDecimal 1.234567890123E+15 "1.234567890123E+15"
createDecimal 1.2345678901234567E+25 "1.2345678901234567E+25"
createDecimal 1.2345678901234567E+35 "1.2345678901234567E+35"
createDecimal 1.23456789E-5 "1.23456789E-5"
createDecimal 1.234567890123E-15 "1.234567890123E-15"
createDecimal 1.2345678901234567E-25 "1.2345678901234567E-25"
createDecimal 1.2345678901234567E-35 "1.2345678901234567E-35"
createDecimal (1. / 7.) "1. / 7."
// This example of the decimal( double ) constructor
// generates the following output.
//
// Constructor Value or Exception
// ----------- ------------------
// decimal( 1.23456789E+5 ) 123456.789
// decimal( 1.234567890123E+15 ) 1234567890123000
// decimal( 1.2345678901234567E+25 ) 12345678901234600000000000
// decimal( 1.2345678901234567E+35 ) OverflowException
// decimal( 1.23456789E-5 ) 0.0000123456789
// decimal( 1.234567890123E-15 ) 0.000000000000001234567890123
// decimal( 1.2345678901234567E-25 ) 0.0000000000000000000000001235
// decimal( 1.2345678901234567E-35 ) 0
' Example of the Decimal( Double ) constructor.
Module DecimalCtorDoDemo
' Get the exception type name; remove the namespace prefix.
Function GetExceptionType( ex As Exception ) As String
Dim exceptionType As String = ex.GetType( ).ToString( )
Return exceptionType.Substring( _
exceptionType.LastIndexOf( "."c ) + 1 )
End Function
' Create a Decimal object and display its value.
Sub CreateDecimal( value As Double, valToStr As String )
' Format and display the constructor.
Console.Write( "{0,-34}", _
String.Format( "Decimal( {0} )", valToStr ) )
' Construct the Decimal value.
Try
Dim decimalNum As New Decimal( value )
' Display the value if it was created successfully.
Console.WriteLine( "{0,31}", decimalNum )
' Display the exception type if an exception was thrown.
Catch ex As Exception
Console.WriteLine( "{0,31}", GetExceptionType( ex ) )
End Try
End Sub
Sub Main( )
Console.WriteLine( _
"This example of the Decimal( Double ) constructor " & _
vbCrLf & "generates the following output." & vbCrLf )
Console.WriteLine( "{0,-34}{1,31}", "Constructor", _
"Value or Exception" )
Console.WriteLine( "{0,-34}{1,31}", "-----------", _
"------------------" )
' Construct Decimal objects from Double values.
CreateDecimal( 1.23456789E+5, "1.23456789E+5" )
CreateDecimal( 1.234567890123E+15, "1.234567890123E+15" )
CreateDecimal( 1.2345678901234567E+25, _
"1.2345678901234567E+25" )
CreateDecimal( 1.2345678901234567E+35, _
"1.2345678901234567E+35" )
CreateDecimal( 1.23456789E-5, "1.23456789E-5" )
CreateDecimal( 1.234567890123E-15, "1.234567890123E-15" )
CreateDecimal( 1.2345678901234567E-25, _
"1.2345678901234567E-25" )
CreateDecimal( 1.2345678901234567E-35, _
"1.2345678901234567E-35" )
CreateDecimal( 1.0 / 7.0, "1.0 / 7.0" )
End Sub
End Module
' This example of the Decimal( Double ) constructor
' generates the following output.
'
' Constructor Value or Exception
' ----------- ------------------
' Decimal( 1.23456789E+5 ) 123456.789
' Decimal( 1.234567890123E+15 ) 1234567890123000
' Decimal( 1.2345678901234567E+25 ) 12345678901234600000000000
' Decimal( 1.2345678901234567E+35 ) OverflowException
' Decimal( 1.23456789E-5 ) 0.0000123456789
' Decimal( 1.234567890123E-15 ) 0.000000000000001234567890123
' Decimal( 1.2345678901234567E-25 ) 0.0000000000000000000000001235
' Decimal( 1.2345678901234567E-35 ) 0
' Decimal( 1.0 / 7.0 ) 0.142857142857143
Opmerkingen
Deze constructor rondt value af op 15 significante cijfers met afronding naar het dichtstbijzijnde. Dit gebeurt zelfs als het getal meer dan 15 cijfers heeft en de minder significante cijfers nul zijn.
Van toepassing op
Decimal(Int32)
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
Initialiseert een nieuw exemplaar van Decimal de waarde van het opgegeven 32-bits ondertekende gehele getal.
public:
Decimal(int value);
public Decimal(int value);
new decimal : int -> decimal
Public Sub New (value As Integer)
Parameters
Voorbeelden
In het volgende codevoorbeeld worden verschillende Decimal getallen gemaakt met behulp van de overbelasting van de constructor waarmee een Decimal structuur met een Int32 waarde wordt geïnitialiseerd.
// Example of the decimal( int ) constructor.
using System;
class DecimalCtorIDemo
{
// Create a decimal object and display its value.
public static void CreateDecimal( int value, string valToStr )
{
decimal decimalNum = new decimal( value );
// Format the constructor for display.
string ctor = String.Format( "decimal( {0} )", valToStr );
// Display the constructor and its value.
Console.WriteLine( "{0,-30}{1,16}", ctor, decimalNum );
}
public static void Main( )
{
Console.WriteLine( "This example of the decimal( int ) " +
"constructor \ngenerates the following output.\n" );
Console.WriteLine( "{0,-30}{1,16}", "Constructor", "Value" );
Console.WriteLine( "{0,-30}{1,16}", "-----------", "-----" );
// Construct decimal objects from int values.
CreateDecimal( int.MinValue, "int.MinValue" );
CreateDecimal( int.MaxValue, "int.MaxValue" );
CreateDecimal( 0, "0" );
CreateDecimal( 999999999, "999999999" );
CreateDecimal( 0x40000000, "0x40000000" );
CreateDecimal( unchecked( (int)0xC0000000 ),
"(int)0xC0000000" );
}
}
/*
This example of the decimal( int ) constructor
generates the following output.
Constructor Value
----------- -----
decimal( int.MinValue ) -2147483648
decimal( int.MaxValue ) 2147483647
decimal( 0 ) 0
decimal( 999999999 ) 999999999
decimal( 0x40000000 ) 1073741824
decimal( (int)0xC0000000 ) -1073741824
*/
// Example of the decimal(int) constructor.
open System
// Create a decimal object and display its value.
let createDecimal (value: int) valToStr =
let decimalNum = new decimal(value)
// Format the constructor for display.
let ctor = $"decimal( {valToStr} )"
// Display the constructor and its value.
printfn $"{ctor,-30}{decimalNum,16}"
printfn "This example of the decimal(int) constructor\ngenerates the following output.\n"
printfn "%-30s%16s" "Constructor" "Value"
printfn "%-30s%16s" "-----------" "-----"
// Construct decimal objects from int values.
createDecimal Int32.MinValue "Int32.MinValue"
createDecimal Int32.MaxValue "int.MaxValue"
createDecimal 0 "0"
createDecimal 999999999 "999999999"
createDecimal 0x40000000 "0x40000000"
createDecimal (int 0xC0000000) "int 0xC0000000"
// This example of the decimal(int) constructor
// generates the following output.
// Constructor Value
// ----------- -----
// decimal( Int32.MinValue ) -2147483648
// decimal( Int32.MaxValue ) 2147483647
// decimal( 0 ) 0
// decimal( 999999999 ) 999999999
// decimal( 0x40000000 ) 1073741824
// decimal( int 0xC0000000 ) -1073741824
' Example of the Decimal( Integer ) constructor.
Module DecimalCtorIDemo
' Create a Decimal object and display its value.
Sub CreateDecimal( value As Integer, valToStr As String )
Dim decimalNum As New Decimal( value )
' Format the constructor for display.
Dim ctor As String = _
String.Format( "Decimal( {0} )", valToStr )
' Display the constructor and its value.
Console.WriteLine( "{0,-33}{1,16}", ctor, decimalNum )
End Sub
Sub Main( )
Console.WriteLine( _
"This example of the Decimal( Integer ) constructor " & _
vbCrLf & "generates the following output." & vbCrLf )
Console.WriteLine( "{0,-33}{1,16}", "Constructor", "Value" )
Console.WriteLine( "{0,-33}{1,16}", "-----------", "-----" )
' Construct Decimal objects from Integer values.
CreateDecimal( Integer.MinValue, "Integer.MinValue" )
CreateDecimal( Integer.MaxValue, "Integer.MaxValue" )
CreateDecimal( 0, "0" )
CreateDecimal( 999999999, "999999999" )
CreateDecimal( &H40000000, "&H40000000" )
CreateDecimal( &HC0000000, "&HC0000000" )
End Sub
End Module
' This example of the Decimal( Integer ) constructor
' generates the following output.
'
' Constructor Value
' ----------- -----
' Decimal( Integer.MinValue ) -2147483648
' Decimal( Integer.MaxValue ) 2147483647
' Decimal( 0 ) 0
' Decimal( 999999999 ) 999999999
' Decimal( &H40000000 ) 1073741824
' Decimal( &HC0000000 ) -1073741824
Van toepassing op
Decimal(Int32[])
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
Initialiseert een nieuw exemplaar van Decimal een decimale waarde die wordt weergegeven in binair en in een opgegeven matrix.
public:
Decimal(cli::array <int> ^ bits);
public Decimal(int[] bits);
new decimal : int[] -> decimal
Public Sub New (bits As Integer())
Parameters
- bits
- Int32[]
Een matrix van 32-bits ondertekende gehele getallen die een weergave van een decimale waarde bevatten.
Uitzonderingen
bits is null.
De lengte van de bits is niet 4.
– of –
De weergave van de decimale waarde in bits is ongeldig.
Voorbeelden
In het volgende codevoorbeeld worden verschillende Decimal getallen gemaakt met behulp van de overbelasting van de constructor waarmee een Decimal structuur wordt geïnitialiseerd met een matrix van vier Int32 waarden.
// Example of the decimal( int[ ] ) constructor.
using System;
class DecimalCtorIArrDemo
{
// Get the exception type name; remove the namespace prefix.
public static string GetExceptionType( Exception ex )
{
string exceptionType = ex.GetType( ).ToString( );
return exceptionType.Substring(
exceptionType.LastIndexOf( '.' ) + 1 );
}
// Create a decimal object and display its value.
public static void CreateDecimal( int[ ] bits )
{
// Format the constructor for display.
string ctor = String.Format(
"decimal( {{ 0x{0:X}", bits[ 0 ] );
string valOrExc;
for( int index = 1; index < bits.Length; index++ )
ctor += String.Format( ", 0x{0:X}", bits[ index ] );
ctor += " } )";
try
{
// Construct the decimal value.
decimal decimalNum = new decimal( bits );
// Format the decimal value for display.
valOrExc = decimalNum.ToString( );
}
catch( Exception ex )
{
// Save the exception type if an exception was thrown.
valOrExc = GetExceptionType( ex );
}
// Display the constructor and decimal value or exception.
int ctorLen = 76 - valOrExc.Length;
// Display the data on one line if it will fit.
if( ctorLen > ctor.Length )
Console.WriteLine( "{0}{1}", ctor.PadRight( ctorLen ),
valOrExc );
// Otherwise, display the data on two lines.
else
{
Console.WriteLine( "{0}", ctor );
Console.WriteLine( "{0,76}", valOrExc );
}
}
public static void Main( )
{
Console.WriteLine(
"This example of the decimal( int[ ] ) constructor " +
"\ngenerates the following output.\n" );
Console.WriteLine( "{0,-38}{1,38}", "Constructor",
"Value or Exception" );
Console.WriteLine( "{0,-38}{1,38}", "-----------",
"------------------" );
// Construct decimal objects from integer arrays.
CreateDecimal( new int[ ] { 0, 0, 0, 0 } );
CreateDecimal( new int[ ] { 0, 0, 0 } );
CreateDecimal( new int[ ] { 0, 0, 0, 0, 0 } );
CreateDecimal( new int[ ] { 1000000000, 0, 0, 0 } );
CreateDecimal( new int[ ] { 0, 1000000000, 0, 0 } );
CreateDecimal( new int[ ] { 0, 0, 1000000000, 0 } );
CreateDecimal( new int[ ] { 0, 0, 0, 1000000000 } );
CreateDecimal( new int[ ] { -1, -1, -1, 0 } );
CreateDecimal( new int[ ]
{ -1, -1, -1, unchecked( (int)0x80000000 ) } );
CreateDecimal( new int[ ] { -1, 0, 0, 0x100000 } );
CreateDecimal( new int[ ] { -1, 0, 0, 0x1C0000 } );
CreateDecimal( new int[ ] { -1, 0, 0, 0x1D0000 } );
CreateDecimal( new int[ ] { -1, 0, 0, 0x1C0001 } );
CreateDecimal( new int[ ]
{ 0xF0000, 0xF0000, 0xF0000, 0xF0000 } );
}
}
/*
This example of the decimal( int[ ] ) constructor
generates the following output.
Constructor Value or Exception
----------- ------------------
decimal( { 0x0, 0x0, 0x0, 0x0 } ) 0
decimal( { 0x0, 0x0, 0x0 } ) ArgumentException
decimal( { 0x0, 0x0, 0x0, 0x0, 0x0 } ) ArgumentException
decimal( { 0x3B9ACA00, 0x0, 0x0, 0x0 } ) 1000000000
decimal( { 0x0, 0x3B9ACA00, 0x0, 0x0 } ) 4294967296000000000
decimal( { 0x0, 0x0, 0x3B9ACA00, 0x0 } ) 18446744073709551616000000000
decimal( { 0x0, 0x0, 0x0, 0x3B9ACA00 } ) ArgumentException
decimal( { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x0 } )
79228162514264337593543950335
decimal( { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x80000000 } )
-79228162514264337593543950335
decimal( { 0xFFFFFFFF, 0x0, 0x0, 0x100000 } ) 0.0000004294967295
decimal( { 0xFFFFFFFF, 0x0, 0x0, 0x1C0000 } ) 0.0000000000000000004294967295
decimal( { 0xFFFFFFFF, 0x0, 0x0, 0x1D0000 } ) ArgumentException
decimal( { 0xFFFFFFFF, 0x0, 0x0, 0x1C0001 } ) ArgumentException
decimal( { 0xF0000, 0xF0000, 0xF0000, 0xF0000 } )
18133887298.441562272235520
*/
// Example of the decimal(int[]) constructor.
open System
// Get the exception type name; remove the namespace prefix.
let getExceptionType (ex: exn) =
let exceptionType = ex.GetType() |> string
exceptionType.Substring(exceptionType.LastIndexOf '.' + 1)
// Create a decimal object and display its value.
let createDecimal (bits: int[]) =
// Format the constructor for display.
let mutable ctor = String.Format("decimal( {{ 0x{0:X}", bits[0])
for i = 1 to bits.Length - 1 do
ctor <- $"{ctor}, 0x{bits[i]:X}"
ctor <- ctor + " } )"
let valOrExc =
try
// Construct the decimal value.
let decimalNum = new decimal(bits)
// Format the decimal value for display.
string decimalNum
with ex ->
// Save the exception type if an exception was thrown.
getExceptionType ex
// Display the constructor and decimal value or exception.
let ctorLen = 76 - valOrExc.Length;
// Display the data on one line if it will fit.
if ctorLen > ctor.Length then
printfn $"{ctor.PadRight ctorLen}{valOrExc}"
// Otherwise, display the data on two lines.
else
printfn $"{ctor}"
printfn $"{valOrExc,76}"
printfn
"""This example of the decimal(int[]) constructor
generates the following output.
"""
printfn "%-38s%38s" "Constructor" "Value or Exception"
printfn "%-38s%38s" "-----------" "------------------"
// Construct decimal objects from integer arrays.
createDecimal [| 0; 0; 0; 0 |]
createDecimal [| 0; 0; 0 |]
createDecimal [| 0; 0; 0; 0; 0 |]
createDecimal [| 1000000000; 0; 0; 0 |]
createDecimal [| 0; 1000000000; 0; 0 |]
createDecimal [| 0; 0; 1000000000; 0 |]
createDecimal [| 0; 0; 0; 1000000000 |]
createDecimal [| -1; -1; -1; 0 |]
createDecimal [| -1; -1; -1; 0x80000000 |]
createDecimal [| -1; 0; 0; 0x100000 |]
createDecimal [| -1; 0; 0; 0x1C0000 |]
createDecimal [| -1; 0; 0; 0x1D0000 |]
createDecimal [| -1; 0; 0; 0x1C0001 |]
createDecimal [| 0xF0000; 0xF0000; 0xF0000; 0xF0000 |]
// This example of the decimal(int[]) constructor
// generates the following output.
//
// Constructor Value or Exception
// ----------- ------------------
// decimal( { 0x0, 0x0, 0x0, 0x0 } ) 0
// decimal( { 0x0, 0x0, 0x0 } ) ArgumentException
// decimal( { 0x0, 0x0, 0x0, 0x0, 0x0 } ) ArgumentException
// decimal( { 0x3B9ACA00, 0x0, 0x0, 0x0 } ) 1000000000
// decimal( { 0x0, 0x3B9ACA00, 0x0, 0x0 } ) 4294967296000000000
// decimal( { 0x0, 0x0, 0x3B9ACA00, 0x0 } ) 18446744073709551616000000000
// decimal( { 0x0, 0x0, 0x0, 0x3B9ACA00 } ) ArgumentException
// decimal( { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x0 } )
// 79228162514264337593543950335
// decimal( { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x80000000 } )
// -79228162514264337593543950335
// decimal( { 0xFFFFFFFF, 0x0, 0x0, 0x100000 } ) 0.0000004294967295
// decimal( { 0xFFFFFFFF, 0x0, 0x0, 0x1C0000 } ) 0.0000000000000000004294967295
// decimal( { 0xFFFFFFFF, 0x0, 0x0, 0x1D0000 } ) ArgumentException
// decimal( { 0xFFFFFFFF, 0x0, 0x0, 0x1C0001 } ) ArgumentException
// decimal( { 0xF0000, 0xF0000, 0xF0000, 0xF0000 } )
// 18133887298.441562272235520
' Example of the Decimal( Integer( ) ) constructor.
Module DecimalCtorIArrDemo
' Get the exception type name; remove the namespace prefix.
Function GetExceptionType( ex As Exception ) As String
Dim exceptionType As String = ex.GetType( ).ToString( )
Return exceptionType.Substring( _
exceptionType.LastIndexOf( "."c ) + 1 )
End Function
' Create a Decimal object and display its value.
Sub CreateDecimal( ByVal bits( ) As Integer )
' Format and save the constructor.
Dim ctor As String = String.Format( "Decimal( {{ &H{0:X}", bits( 0 ) )
Dim valOrExc As String
Dim index As Integer
For index = 1 to bits.Length - 1
ctor &= String.Format( ", &H{0:X}", bits( index ) )
Next index
ctor &= " } )"
' Construct the Decimal value.
Try
Dim decimalNum As New Decimal( bits )
' Format the Decimal value for display.
valOrExc = decimalNum.ToString( )
' Save the exception type if an exception was thrown.
Catch ex As Exception
valOrExc = GetExceptionType( ex )
End Try
' Display the constructor and Decimal value or exception.
Dim ctorLen As Integer = 76 - valOrExc.Length
If ctorLen > ctor.Length Then
' Display the data on one line if it will fit.
Console.WriteLine( "{0}{1}", ctor.PadRight( ctorLen ), _
valOrExc )
' Otherwise, display the data on two lines.
Else
Console.WriteLine( "{0}", ctor )
Console.WriteLine( "{0,76}", valOrExc )
End If
End Sub
Sub Main( )
Console.WriteLine( "This example of the " & _
"Decimal( Integer( ) ) constructor " & _
vbCrLf & "generates the following output." & vbCrLf )
Console.WriteLine( "{0,-38}{1,38}", "Constructor", _
"Value or Exception" )
Console.WriteLine( "{0,-38}{1,38}", "-----------", _
"------------------" )
' Construct Decimal objects from Integer arrays.
CreateDecimal( New Integer( ) { 0, 0, 0, 0 } )
CreateDecimal( New Integer( ) { 0, 0, 0 } )
CreateDecimal( New Integer( ) { 0, 0, 0, 0, 0 } )
CreateDecimal( New Integer( ) { 1000000000, 0, 0, 0 } )
CreateDecimal( New Integer( ) { 0, 1000000000, 0, 0 } )
CreateDecimal( New Integer( ) { 0, 0, 1000000000, 0 } )
CreateDecimal( New Integer( ) { 0, 0, 0, 1000000000 } )
CreateDecimal( New Integer( ) { -1, -1, -1, 0 } )
CreateDecimal( New Integer( ) { -1, -1, -1, &H80000000 } )
CreateDecimal( New Integer( ) { -1, 0, 0, &H100000 } )
CreateDecimal( New Integer( ) { -1, 0, 0, &H1C0000 } )
CreateDecimal( New Integer( ) { -1, 0, 0, &H1D0000 } )
CreateDecimal( New Integer( ) { -1, 0, 0, &H1C0001 } )
CreateDecimal( New Integer( ) _
{ &HF0000, &HF0000, &HF0000, &HF0000 } )
End Sub
End Module
' This example of the Decimal( Integer( ) ) constructor
' generates the following output.
'
' Constructor Value or Exception
' ----------- ------------------
' Decimal( { &H0, &H0, &H0, &H0 } ) 0
' Decimal( { &H0, &H0, &H0 } ) ArgumentException
' Decimal( { &H0, &H0, &H0, &H0, &H0 } ) ArgumentException
' Decimal( { &H3B9ACA00, &H0, &H0, &H0 } ) 1000000000
' Decimal( { &H0, &H3B9ACA00, &H0, &H0 } ) 4294967296000000000
' Decimal( { &H0, &H0, &H3B9ACA00, &H0 } ) 18446744073709551616000000000
' Decimal( { &H0, &H0, &H0, &H3B9ACA00 } ) ArgumentException
' Decimal( { &HFFFFFFFF, &HFFFFFFFF, &HFFFFFFFF, &H0 } )
' 79228162514264337593543950335
' Decimal( { &HFFFFFFFF, &HFFFFFFFF, &HFFFFFFFF, &H80000000 } )
' -79228162514264337593543950335
' Decimal( { &HFFFFFFFF, &H0, &H0, &H100000 } ) 0.0000004294967295
' Decimal( { &HFFFFFFFF, &H0, &H0, &H1C0000 } ) 0.0000000000000000004294967295
' Decimal( { &HFFFFFFFF, &H0, &H0, &H1D0000 } ) ArgumentException
' Decimal( { &HFFFFFFFF, &H0, &H0, &H1C0001 } ) ArgumentException
' Decimal( { &HF0000, &HF0000, &HF0000, &HF0000 } )
' 18133887298.441562272235520
Opmerkingen
De binaire weergave van een Decimal getal bestaat uit een 1-bits teken, een 96-bits geheel getal en een schaalfactor die wordt gebruikt om het gehele getal te delen en op te geven welk gedeelte hiervan een decimale breuk is. De schaalfactor is impliciet het getal 10, verhoogd tot een exponent van 0 tot 28.
bits is een matrix met vier elementen van 32-bits ondertekende gehele getallen.
bits [0], bits [1] en bits [2] bevatten het lage, middelste en hoge 32 bits van het 96-bits gehele getal.
bits [3] bevat de schaalfactor en het teken en bestaat uit de volgende onderdelen:
Bits 0 tot 15, het onderste woord, zijn ongebruikt en moeten nul zijn.
Bits 16 tot 23 moeten een exponent tussen 0 en 28 bevatten, wat de macht van 10 aangeeft om het gehele getal te delen.
Bits 24 tot 30 zijn ongebruikt en moeten nul zijn.
Bit 31 bevat het teken; 0 betekenis positief en 1 betekenis negatief.
Een numerieke waarde kan verschillende mogelijke binaire representaties hebben; ze zijn allemaal even geldig en numeriek gelijkwaardig. Houd er rekening mee dat de bitweergave onderscheid maakt tussen negatieve en positieve nul. Deze waarden worden behandeld als gelijk in alle bewerkingen.
Zie ook
Van toepassing op
Decimal(Int64)
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
Initialiseert een nieuw exemplaar van Decimal de waarde van het opgegeven 64-bits ondertekende gehele getal.
public:
Decimal(long value);
public Decimal(long value);
new decimal : int64 -> decimal
Public Sub New (value As Long)
Parameters
Voorbeelden
In het volgende codevoorbeeld worden verschillende Decimal getallen gemaakt met behulp van de overbelasting van de constructor waarmee een Decimal structuur met een Int64 waarde wordt geïnitialiseerd.
// Example of the decimal( long ) constructor.
using System;
class DecimalCtorLDemo
{
// Create a decimal object and display its value.
public static void CreateDecimal( long value, string valToStr )
{
decimal decimalNum = new decimal( value );
// Format the constructor for display.
string ctor = String.Format( "decimal( {0} )", valToStr );
// Display the constructor and its value.
Console.WriteLine( "{0,-35}{1,22}", ctor, decimalNum );
}
public static void Main( )
{
Console.WriteLine( "This example of the decimal( long ) " +
"constructor \ngenerates the following output.\n" );
Console.WriteLine( "{0,-35}{1,22}", "Constructor", "Value" );
Console.WriteLine( "{0,-35}{1,22}", "-----------", "-----" );
// Construct decimal objects from long values.
CreateDecimal( long.MinValue, "long.MinValue" );
CreateDecimal( long.MaxValue, "long.MaxValue" );
CreateDecimal( 0L, "0L" );
CreateDecimal( 999999999999999999, "999999999999999999" );
CreateDecimal( 0x2000000000000000, "0x2000000000000000" );
CreateDecimal( unchecked( (long)0xE000000000000000 ),
"(long)0xE000000000000000" );
}
}
/*
This example of the decimal( long ) constructor
generates the following output.
Constructor Value
----------- -----
decimal( long.MinValue ) -9223372036854775808
decimal( long.MaxValue ) 9223372036854775807
decimal( 0 ) 0
decimal( 999999999999999999 ) 999999999999999999
decimal( 0x2000000000000000 ) 2305843009213693952
decimal( (long)0xE000000000000000 ) -2305843009213693952
*/
// Example of the decimal( int64 ) constructor.
open System
// Create a decimal object and display its value.
let createDecimal (value: int64) valToStr =
let decimalNum = Decimal value
// Format the constructor for display.
let ctor = $"decimal( {valToStr} )"
// Display the constructor and its value.
printfn $"{ctor,-35}{decimalNum,22}"
printfn "This example of the decimal( int64 ) constructor\ngenerates the following output.\n"
printfn "%-35s%22s" "Constructor" "Value"
printfn "%-35s%22s" "-----------" "-----"
// Construct decimal objects from long values.
createDecimal Int64.MinValue "Int64.MinValue"
createDecimal Int64.MaxValue "Int64.MaxValue"
createDecimal 0L "0L"
createDecimal 999999999999999999L "999999999999999999L"
createDecimal 0x2000000000000000L "0x2000000000000000L"
createDecimal (int64 0xE000000000000000L) "int64 0xE000000000000000L"
// This example of the decimal( int64 ) constructor
// generates the following output.
//
// Constructor Value
// ----------- -----
// decimal( Int64.MinValue ) -9223372036854775808
// decimal( Int64.MaxValue ) 9223372036854775807
// decimal( 0L ) 0
// decimal( 999999999999999999L ) 999999999999999999
// decimal( 0x2000000000000000L ) 2305843009213693952
// decimal( int64 0xE000000000000000L ) -2305843009213693952
' Example of the Decimal( Long ) constructor.
Module DecimalCtorLDemo
' Create a Decimal object and display its value.
Sub CreateDecimal( value As Long, valToStr As String )
Dim decimalNum As New Decimal( value )
' Format the constructor for display.
Dim ctor As String = _
String.Format( "Decimal( {0} )", valToStr )
' Display the constructor and its value.
Console.WriteLine( "{0,-30}{1,22}", ctor, decimalNum )
End Sub
Sub Main( )
Console.WriteLine( _
"This example of the Decimal( Long ) constructor " & _
vbCrLf & "generates the following output." & vbCrLf )
Console.WriteLine( "{0,-30}{1,22}", "Constructor", "Value" )
Console.WriteLine( "{0,-30}{1,22}", "-----------", "-----" )
' Construct Decimal objects from Long values.
CreateDecimal( Long.MinValue, "Long.MinValue" )
CreateDecimal( Long.MaxValue, "Long.MaxValue" )
CreateDecimal( 0L, "0" )
CreateDecimal( 999999999999999999, "999999999999999999" )
CreateDecimal( &H2000000000000000, "&H2000000000000000" )
CreateDecimal( &HE000000000000000, "&HE000000000000000" )
End Sub
End Module
' This example of the Decimal( Long ) constructor
' generates the following output.
'
' Constructor Value
' ----------- -----
' Decimal( Long.MinValue ) -9223372036854775808
' Decimal( Long.MaxValue ) 9223372036854775807
' Decimal( 0 ) 0
' Decimal( 999999999999999999 ) 999999999999999999
' Decimal( &H2000000000000000 ) 2305843009213693952
' Decimal( &HE000000000000000 ) -2305843009213693952
Van toepassing op
Decimal(ReadOnlySpan<Int32>)
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
Initialiseert een nieuw exemplaar van Decimal een decimale waarde die wordt weergegeven in binair en in de opgegeven periode.
public:
Decimal(ReadOnlySpan<int> bits);
public Decimal(ReadOnlySpan<int> bits);
new decimal : ReadOnlySpan<int> -> decimal
Public Sub New (bits As ReadOnlySpan(Of Integer))
Parameters
- bits
- ReadOnlySpan<Int32>
Een reeks van vier Int32 waarden die een binaire weergave van een decimale waarde bevatten.
Uitzonderingen
De lengte is bits niet 4 of de weergave van de decimale waarde in bits is ongeldig.
Van toepassing op
Decimal(Single)
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
Initialiseert een nieuw exemplaar van Decimal de waarde van het opgegeven drijvendekommagetal met één precisie.
public:
Decimal(float value);
public Decimal(float value);
new decimal : single -> decimal
Public Sub New (value As Single)
Parameters
Uitzonderingen
value is groter dan Decimal.MaxValue of kleiner dan Decimal.MinValue.
– of –
value is NaN, PositiveInfinityof NegativeInfinity.
Voorbeelden
In het volgende codevoorbeeld worden verschillende Decimal getallen gemaakt met behulp van de overbelasting van de constructor waarmee een Decimal structuur met een Single waarde wordt geïnitialiseerd.
// Example of the decimal( float ) constructor.
using System;
class DecimalCtorSDemo
{
// Get the exception type name; remove the namespace prefix.
public static string GetExceptionType( Exception ex )
{
string exceptionType = ex.GetType( ).ToString( );
return exceptionType.Substring(
exceptionType.LastIndexOf( '.' ) + 1 );
}
// Create a decimal object and display its value.
public static void CreateDecimal( float value, string valToStr )
{
// Format and display the constructor.
Console.Write( "{0,-27}",
String.Format( "decimal( {0} )", valToStr ) );
try
{
// Construct the decimal value.
decimal decimalNum = new decimal( value );
// Display the value if it was created successfully.
Console.WriteLine( "{0,31}", decimalNum );
}
catch( Exception ex )
{
// Display the exception type if an exception was thrown.
Console.WriteLine( "{0,31}", GetExceptionType( ex ) );
}
}
public static void Main( )
{
Console.WriteLine( "This example of the decimal( float ) " +
"constructor \ngenerates the following output.\n" );
Console.WriteLine( "{0,-27}{1,31}", "Constructor",
"Value or Exception" );
Console.WriteLine( "{0,-27}{1,31}", "-----------",
"------------------" );
// Construct decimal objects from float values.
CreateDecimal( 1.2345E+5F, "1.2345E+5F" );
CreateDecimal( 1.234567E+15F, "1.234567E+15F" );
CreateDecimal( 1.23456789E+25F, "1.23456789E+25F" );
CreateDecimal( 1.23456789E+35F, "1.23456789E+35F" );
CreateDecimal( 1.2345E-5F, "1.2345E-5F" );
CreateDecimal( 1.234567E-15F, "1.234567E-15F" );
CreateDecimal( 1.23456789E-25F, "1.23456789E-25F" );
CreateDecimal( 1.23456789E-35F, "1.23456789E-35F" );
CreateDecimal( 1.0F / 7.0F, "1.0F / 7.0F" );
}
}
/*
This example of the decimal( float ) constructor
generates the following output.
Constructor Value or Exception
----------- ------------------
decimal( 1.2345E+5F ) 123450
decimal( 1.234567E+15F ) 1234567000000000
decimal( 1.23456789E+25F ) 12345680000000000000000000
decimal( 1.23456789E+35F ) OverflowException
decimal( 1.2345E-5F ) 0.000012345
decimal( 1.234567E-15F ) 0.000000000000001234567
decimal( 1.23456789E-25F ) 0.0000000000000000000000001235
decimal( 1.23456789E-35F ) 0
decimal( 1.0F / 7.0F ) 0.1428571
*/
// Example of the decimal( float ) constructor.
open System
// Get the exception type name; remove the namespace prefix.
let getExceptionType (ex: exn) =
let exceptionType = ex.GetType() |> string
exceptionType.Substring(exceptionType.LastIndexOf '.' + 1)
// Create a decimal object and display its value.
let createDecimal (value: float32) valToStr =
// Format and display the constructor.
printf "%-27s" $"decimal( {valToStr} )"
try
// Construct the decimal value.
let decimalNum = Decimal value
// Display the value if it was created successfully.
printfn $"{decimalNum,31}"
with ex ->
// Display the exception type if an exception was thrown.
printfn $"{getExceptionType ex,31}"
printfn "This example of the decimal( float ) constructor \ngenerates the following output.\n"
printfn $"""{"Constructor",-27}{"Value or Exception",31}"""
printfn $"""{"-----------",-27}{"------------------",31}"""
// Construct decimal objects from float values.
createDecimal 1.2345E+5f "1.2345E+5F"
createDecimal 1.234567E+15f "1.234567E+15F"
createDecimal 1.23456789E+25f "1.23456789E+25F"
createDecimal 1.23456789E+35f "1.23456789E+35F"
createDecimal 1.2345E-5f "1.2345E-5F"
createDecimal 1.234567E-15f "1.234567E-15F"
createDecimal 1.23456789E-25f "1.23456789E-25F"
createDecimal 1.23456789E-35f "1.23456789E-35F"
createDecimal (1f / 7f) "1.0F / 7.0F"
// This example of the decimal( float ) constructor
// generates the following output.
// Constructor Value or Exception
// ----------- ------------------
// decimal( 1.2345E+5F ) 123450
// decimal( 1.234567E+15F ) 1234567000000000
// decimal( 1.23456789E+25F ) 12345680000000000000000000
// decimal( 1.23456789E+35F ) OverflowException
// decimal( 1.2345E-5F ) 0.000012345
// decimal( 1.234567E-15F ) 0.000000000000001234567
// decimal( 1.23456789E-25F ) 0.0000000000000000000000001235
// decimal( 1.23456789E-35F ) 0
// decimal( 1.0F / 7.0F ) 0.1428571
' Example of the Decimal( Single ) constructor.
Module DecimalCtorSDemo
' Get the exception type name; remove the namespace prefix.
Function GetExceptionType( ex As Exception ) As String
Dim exceptionType As String = ex.GetType( ).ToString( )
Return exceptionType.Substring( _
exceptionType.LastIndexOf( "."c ) + 1 )
End Function
' Create a Decimal object and display its value.
Sub CreateDecimal( value As Single, valToStr As String )
' Format and display the constructor.
Console.Write( "{0,-27}", _
String.Format( "Decimal( {0} )", valToStr ) )
' Construct the Decimal value.
Try
Dim decimalNum As New Decimal( value )
' Display the value if it was created successfully.
Console.WriteLine( "{0,31}", decimalNum )
' Display the exception type if an exception was thrown.
Catch ex As Exception
Console.WriteLine( "{0,31}", GetExceptionType( ex ) )
End Try
End Sub
Sub Main( )
Console.WriteLine( _
"This example of the Decimal( Single ) constructor " & _
vbCrLf & "generates the following output." & vbCrLf )
Console.WriteLine( "{0,-27}{1,31}", "Constructor", "Value or Exception" )
Console.WriteLine( "{0,-27}{1,31}", "-----------", "------------------" )
' Construct Decimal objects from Single values.
CreateDecimal( 1.2345E+5, "1.2345E+5" )
CreateDecimal( 1.234567E+15, "1.234567E+15" )
CreateDecimal( 1.23456789E+25, "1.23456789E+25" )
CreateDecimal( 1.23456789E+35, "1.23456789E+35" )
CreateDecimal( 1.2345E-5, "1.2345E-5" )
CreateDecimal( 1.234567E-15, "1.234567E-15" )
CreateDecimal( 1.23456789E-25, "1.23456789E-25" )
CreateDecimal( 1.23456789E-35, "1.23456789E-35" )
CreateDecimal( 1.0 / 7.0, "1.0 / 7.0" )
End Sub
End Module
' This example of the Decimal( Single ) constructor
' generates the following output.
'
' Constructor Value or Exception
' ----------- ------------------
' Decimal( 1.2345E+5 ) 123450
' Decimal( 1.234567E+15 ) 1234567000000000
' Decimal( 1.23456789E+25 ) 12345680000000000000000000
' Decimal( 1.23456789E+35 ) OverflowException
' Decimal( 1.2345E-5 ) 0.000012345
' Decimal( 1.234567E-15 ) 0.000000000000001234567
' Decimal( 1.23456789E-25 ) 0.0000000000000000000000001235
' Decimal( 1.23456789E-35 ) 0
' Decimal( 1.0 / 7.0 ) 0.1428571
Opmerkingen
Deze constructor rondt value af op 7 significante cijfers met afronding naar het dichtstbijzijnde. Dit gebeurt zelfs als het getal meer dan 7 cijfers heeft en de minder significante cijfers nul zijn.
Van toepassing op
Decimal(UInt32)
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
Belangrijk
Deze API is niet CLS-conform.
Initialiseert een nieuw exemplaar van Decimal de waarde van het opgegeven 32-bits geheel getal zonder teken.
public:
Decimal(System::UInt32 value);
[System.CLSCompliant(false)]
public Decimal(uint value);
[<System.CLSCompliant(false)>]
new decimal : uint32 -> decimal
Public Sub New (value As UInteger)
Parameters
- Kenmerken
Voorbeelden
In het volgende codevoorbeeld worden verschillende Decimal getallen gemaakt met behulp van de overbelasting van de constructor waarmee een Decimal structuur met een UInt32 waarde wordt geïnitialiseerd.
// Example of the decimal( uint ) constructor.
using System;
class DecimalCtorUIDemo
{
// Create a decimal object and display its value.
public static void CreateDecimal( uint value, string valToStr )
{
decimal decimalNum = new decimal( value );
// Format the constructor for display.
string ctor = String.Format( "decimal( {0} )", valToStr );
// Display the constructor and its value.
Console.WriteLine( "{0,-33}{1,16}", ctor, decimalNum );
}
public static void Main( )
{
Console.WriteLine( "This example of the decimal( uint ) " +
"constructor \ngenerates the following output.\n" );
Console.WriteLine( "{0,-33}{1,16}", "Constructor", "Value" );
Console.WriteLine( "{0,-33}{1,16}", "-----------", "-----" );
// Construct decimal objects from uint values.
CreateDecimal( uint.MinValue, "uint.MinValue" );
CreateDecimal( uint.MaxValue, "uint.MaxValue" );
CreateDecimal( (uint)int.MaxValue, "(uint)int.MaxValue" );
CreateDecimal( 999999999U, "999999999U" );
CreateDecimal( 0x40000000U, "0x40000000U" );
CreateDecimal( 0xC0000000, "0xC0000000" );
}
}
/*
This example of the decimal( uint ) constructor
generates the following output.
Constructor Value
----------- -----
decimal( uint.MinValue ) 0
decimal( uint.MaxValue ) 4294967295
decimal( (uint)int.MaxValue ) 2147483647
decimal( 999999999U ) 999999999
decimal( 0x40000000U ) 1073741824
decimal( 0xC0000000 ) 3221225472
*/
// Example of the decimal( uint ) constructor.
open System
// Create a decimal object and display its value.
let createDecimal (value: uint) valToStr =
let decimalNum = Decimal value
// Format the constructor for display.
let ctor = $"decimal( {valToStr} )"
// Display the constructor and its value.
printfn $"{ctor,-33}{decimalNum,16}"
printfn "This example of the decimal( uint ) constructor \ngenerates the following output.\n"
printfn "%-33s%16s" "Constructor" "Value"
printfn "%-33s%16s" "-----------" "-----"
// Construct decimal objects from uint values.
createDecimal UInt32.MinValue "UInt32.MinValue"
createDecimal UInt32.MaxValue "UInt32.MaxValue"
createDecimal (uint Int32.MaxValue) "uint Int32.MaxValue"
createDecimal 999999999u "999999999u"
createDecimal 0x40000000u "0x40000000u"
createDecimal 0xC0000000u "0xC0000000u"
// This example of the decimal( uint ) constructor
// generates the following output.
//
// Constructor Value
// ----------- -----
// decimal( UInt32.MinValue ) 0
// decimal( UInt32.MaxValue ) 4294967295
// decimal( uint Int32.MaxValue ) 2147483647
// decimal( 999999999u ) 999999999
// decimal( 0x40000000u ) 1073741824
// decimal( 0xC0000000u ) 3221225472
' Example of the Decimal( UInt32 ) constructor.
Module DecimalCtorUIDemo
' Create a Decimal object and display its value.
Sub CreateDecimal( value As UInt32, valToStr As String )
Dim decimalNum As New Decimal( value )
' Format the constructor for display.
Dim ctor As String = _
String.Format( "Decimal( {0} )", valToStr )
' Display the constructor and its value.
Console.WriteLine( "{0,-33}{1,16}", ctor, decimalNum )
End Sub
Sub Main( )
Console.WriteLine( _
"This example of the Decimal( UInt32 ) constructor " & _
vbCrLf & "generates the following output." & vbCrLf )
Console.WriteLine( "{0,-33}{1,16}", "Constructor", "Value" )
Console.WriteLine( "{0,-33}{1,16}", "-----------", "-----" )
' Construct Decimal objects from UInt32 values.
' UInt32.MinValue and UInt32.MaxValue are not defined in VB.
CreateDecimal( Convert.ToUInt32( 0 ), """UInt32.MinValue""" )
CreateDecimal( Convert.ToUInt32( 4294967295 ), _
"""UInt32.MaxValue""" )
CreateDecimal( Convert.ToUInt32( Integer.MaxValue ), _
"Integer.MaxValue" )
CreateDecimal( Convert.ToUInt32( 999999999 ), "999999999" )
CreateDecimal( Convert.ToUInt32( &H40000000 ), "&H40000000" )
CreateDecimal( Convert.ToUInt32( &HC0000000L ), "&HC0000000" )
End Sub
End Module
' This example of the Decimal( UInt32 ) constructor
' generates the following output.
'
' Constructor Value
' ----------- -----
' Decimal( "UInt32.MinValue" ) 0
' Decimal( "UInt32.MaxValue" ) 4294967295
' Decimal( Integer.MaxValue ) 2147483647
' Decimal( 999999999 ) 999999999
' Decimal( &H40000000 ) 1073741824
' Decimal( &HC0000000 ) 3221225472
Van toepassing op
Decimal(UInt64)
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
Belangrijk
Deze API is niet CLS-conform.
Initialiseert een nieuw exemplaar van Decimal de waarde van het opgegeven 64-bits geheel getal zonder teken.
public:
Decimal(System::UInt64 value);
[System.CLSCompliant(false)]
public Decimal(ulong value);
[<System.CLSCompliant(false)>]
new decimal : uint64 -> decimal
Public Sub New (value As ULong)
Parameters
- Kenmerken
Voorbeelden
In het volgende codevoorbeeld worden verschillende Decimal getallen gemaakt met behulp van de overbelasting van de constructor waarmee een Decimal structuur met een UInt64 waarde wordt geïnitialiseerd.
// Example of the decimal( ulong ) constructor.
using System;
class DecimalCtorLDemo
{
// Create a decimal object and display its value.
public static void CreateDecimal( ulong value, string valToStr )
{
decimal decimalNum = new decimal( value );
// Format the constructor for display.
string ctor = String.Format( "decimal( {0} )", valToStr );
// Display the constructor and its value.
Console.WriteLine( "{0,-35}{1,22}", ctor, decimalNum );
}
public static void Main( )
{
Console.WriteLine( "This example of the decimal( ulong ) " +
"constructor \ngenerates the following output.\n" );
Console.WriteLine( "{0,-35}{1,22}", "Constructor", "Value" );
Console.WriteLine( "{0,-35}{1,22}", "-----------", "-----" );
// Construct decimal objects from ulong values.
CreateDecimal( ulong.MinValue, "ulong.MinValue" );
CreateDecimal( ulong.MaxValue, "ulong.MaxValue" );
CreateDecimal( long.MaxValue, "long.MaxValue" );
CreateDecimal( 999999999999999999, "999999999999999999" );
CreateDecimal( 0x2000000000000000, "0x2000000000000000" );
CreateDecimal( 0xE000000000000000, "0xE000000000000000" );
}
}
/*
This example of the decimal( ulong ) constructor
generates the following output.
Constructor Value
----------- -----
decimal( ulong.MinValue ) 0
decimal( ulong.MaxValue ) 18446744073709551615
decimal( long.MaxValue ) 9223372036854775807
decimal( 999999999999999999 ) 999999999999999999
decimal( 0x2000000000000000 ) 2305843009213693952
decimal( 0xE000000000000000 ) 16140901064495857664
*/
// Example of the decimal( uint64 ) constructor.
open System
// Create a decimal object and display its value.
let createDecimal (value: uint64) valToStr =
let decimalNum = Decimal value
// Format the constructor for display.
let ctor = $"decimal( {valToStr} )"
// Display the constructor and its value.
printfn $"{ctor,-35}{decimalNum,22}"
printfn "This example of the decimal( uint64 ) constructor \ngenerates the following output.\n"
printfn "%-35s%22s" "Constructor" "Value"
printfn "%-35s%22s" "-----------" "-----"
// Construct decimal objects from ulong values.
createDecimal UInt64.MinValue "UInt64.MinValue"
createDecimal UInt64.MaxValue "UInt64.MaxValue"
createDecimal (uint64 Int64.MaxValue) "int64 Int64.MaxValue"
createDecimal 999999999999999999uL "999999999999999999uL"
createDecimal 0x2000000000000000uL "0x2000000000000000uL"
createDecimal 0xE000000000000000uL "0xE000000000000000uL"
// This example of the decimal( uint64 ) constructor
// generates the following output.
//
// Constructor Value
// ----------- -----
// decimal( UInt64.MinValue ) 0
// decimal( UInt64.MaxValue ) 18446744073709551615
// decimal( int64 Int64.MaxValue ) 9223372036854775807
// decimal( 999999999999999999uL ) 999999999999999999
// decimal( 0x2000000000000000uL ) 2305843009213693952
// decimal( 0xE000000000000000uL ) 16140901064495857664
' Example of the Decimal( UInt64 ) constructor.
Module DecimalCtorULDemo
' Create a Decimal object and display its value.
Sub CreateDecimal( value As UInt64, valToStr As String )
Dim decimalNum As New Decimal( value )
' Format the constructor for display.
Dim ctor As String = _
String.Format( "Decimal( {0} )", valToStr )
' Display the constructor and its value.
Console.WriteLine( "{0,-33}{1,22}", ctor, decimalNum )
End Sub
Sub Main( )
Console.WriteLine( _
"This example of the Decimal( UInt64 ) constructor " & _
vbCrLf & "generates the following output." & vbCrLf )
Console.WriteLine( "{0,-33}{1,22}", "Constructor", "Value" )
Console.WriteLine( "{0,-33}{1,22}", "-----------", "-----" )
' Construct Decimal objects from UInt64 values.
' UInt64.MinValue and UInt64.MaxValue are not defined in VB.
CreateDecimal( Convert.ToUInt64( 0 ), """UInt64.MinValue""" )
CreateDecimal( Convert.ToUInt64( 18446744073709551615D ), _
"""UInt64.MaxValue""" )
CreateDecimal( Convert.ToUInt64( Long.MaxValue ), _
"Long.MaxValue" )
CreateDecimal( Convert.ToUInt64( 999999999999999999 ), _
"999999999999999999" )
CreateDecimal( Convert.ToUInt64( &H2000000000000000 ), _
"&H2000000000000000" )
CreateDecimal( Convert.ToUInt64( 16140901064495857664.0 ), _
"16140901064495857664.0" )
End Sub
End Module
' This example of the Decimal( UInt64 ) constructor
' generates the following output.
'
' Constructor Value
' ----------- -----
' Decimal( "UInt64.MinValue" ) 0
' Decimal( "UInt64.MaxValue" ) 18446744073709551615
' Decimal( Long.MaxValue ) 9223372036854775807
' Decimal( 999999999999999999 ) 999999999999999999
' Decimal( &H2000000000000000 ) 2305843009213693952
' Decimal( 16140901064495857664.0 ) 16140901064495857664
Van toepassing op
Decimal(Int32, Int32, Int32, Boolean, Byte)
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
- Bron:
- Decimal.cs
Initialiseert een nieuw exemplaar van Decimal parameters die de samenstellende onderdelen van het exemplaar opgeven.
public:
Decimal(int lo, int mid, int hi, bool isNegative, System::Byte scale);
public Decimal(int lo, int mid, int hi, bool isNegative, byte scale);
new decimal : int * int * int * bool * byte -> decimal
Public Sub New (lo As Integer, mid As Integer, hi As Integer, isNegative As Boolean, scale As Byte)
Parameters
- lo
- Int32
De lage 32 bits van een 96-bits geheel getal.
- mid
- Int32
De middelste 32 bits van een 96-bits geheel getal.
- hi
- Int32
De hoge 32 bits van een 96-bits geheel getal.
- isNegative
- Boolean
true om een negatief getal aan te geven; false om een positief getal aan te geven.
- scale
- Byte
Een vermogen van 10 van 0 tot 28.
Uitzonderingen
scale is groter dan 28.
Voorbeelden
In het volgende codevoorbeeld worden verschillende Decimal getallen gemaakt met behulp van de overbelasting van de constructor waarmee een Decimal structuur wordt geïnitialiseerd met drie Int32 waardewoorden, een Boolean teken en een Byte schaalfactor.
// Example of the decimal( int, int, int, bool, byte ) constructor.
using System;
class DecimalCtorIIIBByDemo
{
// Get the exception type name; remove the namespace prefix.
public static string GetExceptionType( Exception ex )
{
string exceptionType = ex.GetType( ).ToString( );
return exceptionType.Substring(
exceptionType.LastIndexOf( '.' ) + 1 );
}
// Create a decimal object and display its value.
public static void CreateDecimal( int low, int mid, int high,
bool isNeg, byte scale )
{
// Format the constructor for display.
string ctor = String.Format(
"decimal( {0}, {1}, {2}, {3}, {4} )",
low, mid, high, isNeg, scale );
string valOrExc;
try
{
// Construct the decimal value.
decimal decimalNum = new decimal(
low, mid, high, isNeg, scale );
// Format and save the decimal value.
valOrExc = decimalNum.ToString( );
}
catch( Exception ex )
{
// Save the exception type if an exception was thrown.
valOrExc = GetExceptionType( ex );
}
// Display the constructor and decimal value or exception.
int ctorLen = 76 - valOrExc.Length;
// Display the data on one line if it will fit.
if ( ctorLen > ctor.Length )
Console.WriteLine( "{0}{1}", ctor.PadRight( ctorLen ),
valOrExc );
// Otherwise, display the data on two lines.
else
{
Console.WriteLine( "{0}", ctor );
Console.WriteLine( "{0,76}", valOrExc );
}
}
public static void Main( )
{
Console.WriteLine( "This example of the decimal( int, int, " +
"int, bool, byte ) \nconstructor " +
"generates the following output.\n" );
Console.WriteLine( "{0,-38}{1,38}", "Constructor",
"Value or Exception" );
Console.WriteLine( "{0,-38}{1,38}", "-----------",
"------------------" );
// Construct decimal objects from the component fields.
CreateDecimal( 0, 0, 0, false, 0 );
CreateDecimal( 0, 0, 0, false, 27 );
CreateDecimal( 0, 0, 0, true, 0 );
CreateDecimal( 1000000000, 0, 0, false, 0 );
CreateDecimal( 0, 1000000000, 0, false, 0 );
CreateDecimal( 0, 0, 1000000000, false, 0 );
CreateDecimal( 1000000000, 1000000000, 1000000000, false, 0 );
CreateDecimal( -1, -1, -1, false, 0 );
CreateDecimal( -1, -1, -1, true, 0 );
CreateDecimal( -1, -1, -1, false, 15 );
CreateDecimal( -1, -1, -1, false, 28 );
CreateDecimal( -1, -1, -1, false, 29 );
CreateDecimal( int.MaxValue, 0, 0, false, 18 );
CreateDecimal( int.MaxValue, 0, 0, false, 28 );
CreateDecimal( int.MaxValue, 0, 0, true, 28 );
}
}
/*
This example of the decimal( int, int, int, bool, byte )
constructor generates the following output.
Constructor Value or Exception
----------- ------------------
decimal( 0, 0, 0, False, 0 ) 0
decimal( 0, 0, 0, False, 27 ) 0
decimal( 0, 0, 0, True, 0 ) 0
decimal( 1000000000, 0, 0, False, 0 ) 1000000000
decimal( 0, 1000000000, 0, False, 0 ) 4294967296000000000
decimal( 0, 0, 1000000000, False, 0 ) 18446744073709551616000000000
decimal( 1000000000, 1000000000, 1000000000, False, 0 )
18446744078004518913000000000
decimal( -1, -1, -1, False, 0 ) 79228162514264337593543950335
decimal( -1, -1, -1, True, 0 ) -79228162514264337593543950335
decimal( -1, -1, -1, False, 15 ) 79228162514264.337593543950335
decimal( -1, -1, -1, False, 28 ) 7.9228162514264337593543950335
decimal( -1, -1, -1, False, 29 ) ArgumentOutOfRangeException
decimal( 2147483647, 0, 0, False, 18 ) 0.000000002147483647
decimal( 2147483647, 0, 0, False, 28 ) 0.0000000000000000002147483647
decimal( 2147483647, 0, 0, True, 28 ) -0.0000000000000000002147483647
*/
// Example of the decimal( int, int, int, bool, byte ) constructor.
open System
// Get the exception type name; remove the namespace prefix.
let getExceptionType (ex: exn) =
let exceptionType = ex.GetType() |> string
exceptionType.Substring(exceptionType.LastIndexOf '.' + 1)
// Create a decimal object and display its value.
let createDecimal low mid high (isNeg: bool) (scale: byte) =
// Format the constructor for display.
let ctor =
$"decimal( %i{low}, %i{mid}, %i{high}, {isNeg}, {scale} )"
let valOrExc =
try
// Construct the decimal value.
let decimalNum = new decimal(low, mid, high, isNeg, scale)
// Format and save the decimal value.
decimalNum |> string
with ex ->
// Save the exception type if an exception was thrown.
getExceptionType ex
// Display the constructor and decimal value or exception.
let ctorLen = 76 - valOrExc.Length
// Display the data on one line if it will fit.
if ctorLen > ctor.Length then
printfn $"{ctor.PadRight ctorLen}{valOrExc}"
// Otherwise, display the data on two lines.
else
printfn $"{ctor}"
printfn $"{valOrExc,76}"
printfn
"""This example of the decimal(int, int, int, bool, byte)
constructor generates the following output.
"""
printfn "%-38s%38s" "Constructor" "Value or Exception"
printfn "%-38s%38s" "-----------" "------------------"
// Construct decimal objects from the component fields.
createDecimal 0 0 0 false 0uy
createDecimal 0 0 0 false 27uy
createDecimal 0 0 0 true 0uy
createDecimal 1000000000 0 0 false 0uy
createDecimal 0 1000000000 0 false 0uy
createDecimal 0 0 1000000000 false 0uy
createDecimal 1000000000 1000000000 1000000000 false 0uy
createDecimal -1 -1 -1 false 0uy
createDecimal -1 -1 -1 true 0uy
createDecimal -1 -1 -1 false 15uy
createDecimal -1 -1 -1 false 28uy
createDecimal -1 -1 -1 false 29uy
createDecimal Int32.MaxValue 0 0 false 18uy
createDecimal Int32.MaxValue 0 0 false 28uy
createDecimal Int32.MaxValue 0 0 true 28uy
// This example of the decimal(int, int, int, bool, byte)
// constructor generates the following output.
//
// Constructor Value or Exception
// ----------- ------------------
// decimal( 0, 0, 0, False, 0 ) 0
// decimal( 0, 0, 0, False, 27 ) 0
// decimal( 0, 0, 0, True, 0 ) 0
// decimal( 1000000000, 0, 0, False, 0 ) 1000000000
// decimal( 0, 1000000000, 0, False, 0 ) 4294967296000000000
// decimal( 0, 0, 1000000000, False, 0 ) 18446744073709551616000000000
// decimal( 1000000000, 1000000000, 1000000000, False, 0 )
// 18446744078004518913000000000
// decimal( -1, -1, -1, False, 0 ) 79228162514264337593543950335
// decimal( -1, -1, -1, True, 0 ) -79228162514264337593543950335
// decimal( -1, -1, -1, False, 15 ) 79228162514264.337593543950335
// decimal( -1, -1, -1, False, 28 ) 7.9228162514264337593543950335
// decimal( -1, -1, -1, False, 29 ) ArgumentOutOfRangeException
// decimal( 2147483647, 0, 0, False, 18 ) 0.000000002147483647
// decimal( 2147483647, 0, 0, False, 28 ) 0.0000000000000000002147483647
// decimal( 2147483647, 0, 0, True, 28 ) -0.0000000000000000002147483647
' Example of the Decimal( Integer, Integer, Integer, Boolean, Byte )
' constructor.
Module DecimalCtorIIIBByDemo
' Get the exception type name; remove the namespace prefix.
Function GetExceptionType( ex As Exception ) As String
Dim exceptionType As String = ex.GetType( ).ToString( )
Return exceptionType.Substring( _
exceptionType.LastIndexOf( "."c ) + 1 )
End Function
' Create a Decimal object and display its value.
Sub CreateDecimal( low As Integer, mid As Integer, _
high As Integer, isNeg As Boolean, scale as Byte )
' Format the constructor for display.
Dim ctor As String = String.Format( _
"Decimal( {0}, {1}, {2}, {3}, {4} )", _
low, mid, high, isNeg, scale )
Dim valOrExc As String
' Construct the Decimal value.
Try
Dim decimalNum As New Decimal( _
low, mid, high, isNeg, scale )
' Format and save the Decimal value.
valOrExc = decimalNum.ToString( )
' Save the exception type if an exception was thrown.
Catch ex As Exception
valOrExc = GetExceptionType( ex )
End Try
' Display the constructor and Decimal value or exception.
Dim ctorLen = 76 - valOrExc.Length
If ctorLen > ctor.Length Then
' Display the data on one line if it will fit.
Console.WriteLine( "{0}{1}", ctor.PadRight( ctorLen ), _
valOrExc )
' Otherwise, display the data on two lines.
Else
Console.WriteLine( "{0}", ctor )
Console.WriteLine( "{0,76}", valOrExc )
End If
End Sub
Sub Main( )
Console.WriteLine( _
"This example of the Decimal( Integer, Integer, " & _
"Integer, Boolean, Byte ) " & vbCrLf & "constructor " & _
"generates the following output." & vbCrLf )
Console.WriteLine( "{0,-38}{1,38}", "Constructor", _
"Value or Exception" )
Console.WriteLine( "{0,-38}{1,38}", "-----------", _
"------------------" )
' Construct Decimal objects from the component fields.
CreateDecimal( 0, 0, 0, False, 0 )
CreateDecimal( 0, 0, 0, False, 27 )
CreateDecimal( 0, 0, 0, True, 0 )
CreateDecimal( 1000000000, 0, 0, False, 0 )
CreateDecimal( 0, 1000000000, 0, False, 0 )
CreateDecimal( 0, 0, 1000000000, False, 0 )
CreateDecimal( 1000000000, 1000000000, 1000000000, False, 0 )
CreateDecimal( -1, -1, -1, False, 0 )
CreateDecimal( -1, -1, -1, True, 0 )
CreateDecimal( -1, -1, -1, False, 15 )
CreateDecimal( -1, -1, -1, False, 28 )
CreateDecimal( -1, -1, -1, False, 29 )
CreateDecimal( Integer.MaxValue, 0, 0, False, 18 )
CreateDecimal( Integer.MaxValue, 0, 0, False, 28 )
CreateDecimal( Integer.MaxValue, 0, 0, True, 28 )
End Sub
End Module
' This example of the Decimal( Integer, Integer, Integer, Boolean, Byte )
' constructor generates the following output.
'
' Constructor Value or Exception
' ----------- ------------------
' Decimal( 0, 0, 0, False, 0 ) 0
' Decimal( 0, 0, 0, False, 27 ) 0
' Decimal( 0, 0, 0, True, 0 ) 0
' Decimal( 1000000000, 0, 0, False, 0 ) 1000000000
' Decimal( 0, 1000000000, 0, False, 0 ) 4294967296000000000
' Decimal( 0, 0, 1000000000, False, 0 ) 18446744073709551616000000000
' Decimal( 1000000000, 1000000000, 1000000000, False, 0 )
' 18446744078004518913000000000
' Decimal( -1, -1, -1, False, 0 ) 79228162514264337593543950335
' Decimal( -1, -1, -1, True, 0 ) -79228162514264337593543950335
' Decimal( -1, -1, -1, False, 15 ) 79228162514264.337593543950335
' Decimal( -1, -1, -1, False, 28 ) 7.9228162514264337593543950335
' Decimal( -1, -1, -1, False, 29 ) ArgumentOutOfRangeException
' Decimal( 2147483647, 0, 0, False, 18 ) 0.000000002147483647
' Decimal( 2147483647, 0, 0, False, 28 ) 0.0000000000000000002147483647
' Decimal( 2147483647, 0, 0, True, 28 ) -0.0000000000000000002147483647
In het volgende voorbeeld wordt de GetBits methode gebruikt om de onderdelen van een matrix op te halen. Vervolgens wordt deze matrix gebruikt in de aanroep van de Decimal(Int32, Int32, Int32, Boolean, Byte) constructor om een nieuwe Decimal waarde te instantiëren.
using System;
public class Example
{
public static void Main()
{
Decimal[] values = { 1234.96m, -1234.96m };
foreach (var value in values) {
int[] parts = Decimal.GetBits(value);
bool sign = (parts[3] & 0x80000000) != 0;
byte scale = (byte) ((parts[3] >> 16) & 0x7F);
Decimal newValue = new Decimal(parts[0], parts[1], parts[2], sign, scale);
Console.WriteLine("{0} --> {1}", value, newValue);
}
}
}
// The example displays the following output:
// 1234.96 --> 1234.96
// -1234.96 --> -1234.96
open System
let values = [ 1234.96m; -1234.96m ]
for value in values do
let parts = Decimal.GetBits value
let sign = (parts[3] &&& 0x80000000) <> 0
let scale = (parts[3] >>> 16) &&& 0x7F |> byte
let newValue = Decimal(parts[0], parts[1], parts[2], sign, scale)
printfn $"{value} --> {newValue}"
// The example displays the following output:
// 1234.96 --> 1234.96
// -1234.96 --> -1234.96
Module Example
Public Sub Main()
Dim values() As Decimal = { 1234.96d, -1234.96d }
For Each value In values
Dim parts() = Decimal.GetBits(value)
Dim sign As Boolean = (parts(3) And &h80000000) <> 0
Dim scale As Byte = CByte((parts(3) >> 16) And &H7F)
Dim newValue As New Decimal(parts(0), parts(1), parts(2), sign, scale)
Console.WriteLine("{0} --> {1}", value, newValue)
Next
End Sub
End Module
' The example displays the following output:
' 1234.96 --> 1234.96
' -1234.96 --> -1234.96
Opmerkingen
De binaire weergave van een Decimal getal bestaat uit een 1-bits teken, een 96-bits geheel getal en een schaalfactor die wordt gebruikt om het gehele getal te delen en op te geven welk gedeelte hiervan een decimale breuk is. De schaalfactor is impliciet het getal 10 verhoogd tot een exponent tussen 0 en 28.