BitConverter.DoubleToInt64Bits-Methode
Konvertiert die angegebene Gleitkommazahl mit doppelter Genauigkeit in eine 64-Bit-Ganzzahl mit Vorzeichen.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public Shared Function DoubleToInt64Bits ( _
value As Double _
) As Long
'Usage
Dim value As Double
Dim returnValue As Long
returnValue = BitConverter.DoubleToInt64Bits(value)
public static long DoubleToInt64Bits (
double value
)
public:
static long long DoubleToInt64Bits (
double value
)
public static long DoubleToInt64Bits (
double value
)
public static function DoubleToInt64Bits (
value : double
) : long
Parameter
- value
Die zu konvertierende Zahl.
Rückgabewert
Eine 64-Bit-Ganzzahl mit Vorzeichen, deren Wert value entspricht.
Beispiel
Im folgenden Codebeispiel werden die Bitmuster mehrerer Double-Werte mithilfe der DoubleToInt64Bits-Methode in Int64-Werte konvertiert.
' Example of the BitConverter.DoubleToInt64Bits method.
Imports System
Imports Microsoft.VisualBasic
Module DoubleToInt64BitsDemo
Const formatter As String = "{0,25:E16}{1,23:X16}"
' Reinterpret the Double argument as a Long.
Sub DoubleToLongBits( argument As Double )
Dim longValue As Long
longValue = BitConverter.DoubleToInt64Bits( argument )
' Display the resulting Long in hexadecimal.
Console.WriteLine( formatter, argument, longValue )
End Sub
Sub Main( )
Console.WriteLine( _
"This example of the BitConverter.DoubleToInt64Bits( " & _
"Double ) " & vbCrLf & "method generates the " & _
"following output." & vbCrLf )
Console.WriteLine( formatter, "Double argument", _
"hexadecimal value" )
Console.WriteLine( formatter, "---------------", _
"-----------------" )
' Convert Double values and display the results.
DoubleToLongBits( 1.0 )
DoubleToLongBits( 15.0 )
DoubleToLongBits( 255.0 )
DoubleToLongBits( 4294967295.0 )
DoubleToLongBits( 0.00390625 )
DoubleToLongBits( 0.00000000023283064365386962890625 )
DoubleToLongBits( 1.234567890123E-300 )
DoubleToLongBits( 1.23456789012345E-150 )
DoubleToLongBits( 1.2345678901234565 )
DoubleToLongBits( 1.2345678901234567 )
DoubleToLongBits( 1.2345678901234569 )
DoubleToLongBits( 1.23456789012345678E+150 )
DoubleToLongBits( 1.234567890123456789E+300 )
DoubleToLongBits( Double.MinValue )
DoubleToLongBits( Double.MaxValue )
DoubleToLongBits( Double.Epsilon )
DoubleToLongBits( Double.NaN )
DoubleToLongBits( Double.NegativeInfinity )
DoubleToLongBits( Double.PositiveInfinity )
End Sub
End Module
' This example of the BitConverter.DoubleToInt64Bits( Double )
' method generates the following output.
'
' Double argument hexadecimal value
' --------------- -----------------
' 1.0000000000000000E+000 3FF0000000000000
' 1.5000000000000000E+001 402E000000000000
' 2.5500000000000000E+002 406FE00000000000
' 4.2949672950000000E+009 41EFFFFFFFE00000
' 3.9062500000000000E-003 3F70000000000000
' 2.3283064365386963E-010 3DF0000000000000
' 1.2345678901230000E-300 01AA74FE1C1E7E45
' 1.2345678901234500E-150 20D02A36586DB4BB
' 1.2345678901234565E+000 3FF3C0CA428C59FA
' 1.2345678901234567E+000 3FF3C0CA428C59FB
' 1.2345678901234569E+000 3FF3C0CA428C59FC
' 1.2345678901234569E+150 5F182344CD3CDF9F
' 1.2345678901234569E+300 7E3D7EE8BCBBD352
' -1.7976931348623157E+308 FFEFFFFFFFFFFFFF
' 1.7976931348623157E+308 7FEFFFFFFFFFFFFF
' 4.9406564584124654E-324 0000000000000001
' NaN FFF8000000000000
' -Infinity FFF0000000000000
' Infinity 7FF0000000000000
// Example of the BitConverter.DoubleToInt64Bits method.
using System;
class DoubleToInt64BitsDemo
{
const string formatter = "{0,25:E16}{1,23:X16}";
// Reinterpret the double argument as a long.
public static void DoubleToLongBits( double argument )
{
long longValue;
longValue = BitConverter.DoubleToInt64Bits( argument );
// Display the resulting long in hexadecimal.
Console.WriteLine( formatter, argument, longValue );
}
public static void Main( )
{
Console.WriteLine(
"This example of the BitConverter.DoubleToInt64Bits( " +
"double ) \nmethod generates the following output.\n" );
Console.WriteLine( formatter, "double argument",
"hexadecimal value" );
Console.WriteLine( formatter, "---------------",
"-----------------" );
// Convert double values and display the results.
DoubleToLongBits( 1.0 );
DoubleToLongBits( 15.0 );
DoubleToLongBits( 255.0 );
DoubleToLongBits( 4294967295.0 );
DoubleToLongBits( 0.00390625 );
DoubleToLongBits( 0.00000000023283064365386962890625 );
DoubleToLongBits( 1.234567890123E-300 );
DoubleToLongBits( 1.23456789012345E-150 );
DoubleToLongBits( 1.2345678901234565 );
DoubleToLongBits( 1.2345678901234567 );
DoubleToLongBits( 1.2345678901234569 );
DoubleToLongBits( 1.23456789012345678E+150 );
DoubleToLongBits( 1.234567890123456789E+300 );
DoubleToLongBits( double.MinValue );
DoubleToLongBits( double.MaxValue );
DoubleToLongBits( double.Epsilon );
DoubleToLongBits( double.NaN );
DoubleToLongBits( double.NegativeInfinity );
DoubleToLongBits( double.PositiveInfinity );
}
}
/*
This example of the BitConverter.DoubleToInt64Bits( double )
method generates the following output.
double argument hexadecimal value
--------------- -----------------
1.0000000000000000E+000 3FF0000000000000
1.5000000000000000E+001 402E000000000000
2.5500000000000000E+002 406FE00000000000
4.2949672950000000E+009 41EFFFFFFFE00000
3.9062500000000000E-003 3F70000000000000
2.3283064365386963E-010 3DF0000000000000
1.2345678901230000E-300 01AA74FE1C1E7E45
1.2345678901234500E-150 20D02A36586DB4BB
1.2345678901234565E+000 3FF3C0CA428C59FA
1.2345678901234567E+000 3FF3C0CA428C59FB
1.2345678901234569E+000 3FF3C0CA428C59FC
1.2345678901234569E+150 5F182344CD3CDF9F
1.2345678901234569E+300 7E3D7EE8BCBBD352
-1.7976931348623157E+308 FFEFFFFFFFFFFFFF
1.7976931348623157E+308 7FEFFFFFFFFFFFFF
4.9406564584124654E-324 0000000000000001
NaN FFF8000000000000
-Infinity FFF0000000000000
Infinity 7FF0000000000000
*/
// Example of the BitConverter::DoubleToInt64Bits method.
using namespace System;
// Reinterpret the double argument as an __int64.
void DoubleToLongBits( double argument )
{
__int64 longValue;
longValue = BitConverter::DoubleToInt64Bits( argument );
// Display the resulting __int64 in hexadecimal.
Console::WriteLine( "{0,25:E16}{1,23:X16}", argument, longValue );
}
int main()
{
Console::WriteLine( "This example of the BitConverter::DoubleToInt64Bits( "
"double ) \nmethod generates the following output.\n" );
Console::WriteLine( "{0,25:E16}{1,23:X16}", "double argument", "hexadecimal value" );
Console::WriteLine( "{0,25:E16}{1,23:X16}", "---------------", "-----------------" );
// Convert double values and display the results.
DoubleToLongBits( 1.0 );
DoubleToLongBits( 15.0 );
DoubleToLongBits( 255.0 );
DoubleToLongBits( 4294967295.0 );
DoubleToLongBits( 0.00390625 );
DoubleToLongBits( 0.00000000023283064365386962890625 );
DoubleToLongBits( 1.234567890123E-300 );
DoubleToLongBits( 1.23456789012345E-150 );
DoubleToLongBits( 1.2345678901234565 );
DoubleToLongBits( 1.2345678901234567 );
DoubleToLongBits( 1.2345678901234569 );
DoubleToLongBits( 1.23456789012345678E+150 );
DoubleToLongBits( 1.234567890123456789E+300 );
DoubleToLongBits( Double::MinValue );
DoubleToLongBits( Double::MaxValue );
DoubleToLongBits( Double::Epsilon );
DoubleToLongBits( Double::NaN );
DoubleToLongBits( Double::NegativeInfinity );
DoubleToLongBits( Double::PositiveInfinity );
}
/*
This example of the BitConverter::DoubleToInt64Bits( double )
method generates the following output.
double argument hexadecimal value
--------------- -----------------
1.0000000000000000E+000 3FF0000000000000
1.5000000000000000E+001 402E000000000000
2.5500000000000000E+002 406FE00000000000
4.2949672950000000E+009 41EFFFFFFFE00000
3.9062500000000000E-003 3F70000000000000
2.3283064365386963E-010 3DF0000000000000
1.2345678901230000E-300 01AA74FE1C1E7E45
1.2345678901234500E-150 20D02A36586DB4BB
1.2345678901234565E+000 3FF3C0CA428C59FA
1.2345678901234567E+000 3FF3C0CA428C59FB
1.2345678901234569E+000 3FF3C0CA428C59FC
1.2345678901234569E+150 5F182344CD3CDF9F
1.2345678901234569E+300 7E3D7EE8BCBBD352
-1.7976931348623157E+308 FFEFFFFFFFFFFFFF
1.7976931348623157E+308 7FEFFFFFFFFFFFFF
4.9406564584124654E-324 0000000000000001
NaN FFF8000000000000
-Infinity FFF0000000000000
Infinity 7FF0000000000000
*/
// Example of the BitConverter.DoubleToInt64Bits method.
import System.*;
class DoubleToInt64BitsDemo
{
private static String formatter = "{0,25:E16}{1,23:X16}";
// Reinterpret the double argument as a long.
public static void DoubleToLongBits(double argument)
{
long longValue;
longValue = BitConverter.DoubleToInt64Bits(argument);
// Display the resulting long in hexadecimal.
Console.WriteLine(formatter, (System.Double)(argument),
(Int64)longValue);
} //DoubleToLongBits
public static void main(String[] args)
{
Console.WriteLine("This example of the "
+ "BitConverter.DoubleToInt64Bits( double )\n"
+ "method generates the following output.\n");
Console.WriteLine(formatter, "double argument", "hexadecimal value");
Console.WriteLine(formatter, "---------------", "-----------------");
// Convert double values and display the results.
DoubleToLongBits(1.0);
DoubleToLongBits(15.0);
DoubleToLongBits(255.0);
DoubleToLongBits(4294967295.0);
DoubleToLongBits(0.00390625);
DoubleToLongBits(0.00000000023283064365386962890625);
DoubleToLongBits(1.234567890123E-300);
DoubleToLongBits(1.23456789012345E-150);
DoubleToLongBits(1.2345678901234565);
DoubleToLongBits(1.2345678901234567);
DoubleToLongBits(1.2345678901234569);
DoubleToLongBits(1.23456789012345678E+150);
DoubleToLongBits(1.234567890123456789E+300);
DoubleToLongBits(System.Double.MinValue);
DoubleToLongBits(System.Double.MaxValue);
DoubleToLongBits(System.Double.Epsilon);
DoubleToLongBits(System.Double.NaN);
DoubleToLongBits(System.Double.NegativeInfinity);
DoubleToLongBits(System.Double.PositiveInfinity);
} //main
} //DoubleToInt64BitsDemo
/*
This example of the BitConverter.DoubleToInt64Bits( double )
method generates the following output.
double argument hexadecimal value
--------------- -----------------
1.0000000000000000E+000 3FF0000000000000
1.5000000000000000E+001 402E000000000000
2.5500000000000000E+002 406FE00000000000
4.2949672950000000E+009 41EFFFFFFFE00000
3.9062500000000000E-003 3F70000000000000
2.3283064365386963E-010 3DF0000000000000
1.2345678901230000E-300 01AA74FE1C1E7E45
1.2345678901234500E-150 20D02A36586DB4BB
1.2345678901234565E+000 3FF3C0CA428C59FA
1.2345678901234567E+000 3FF3C0CA428C59FB
1.2345678901234569E+000 3FF3C0CA428C59FC
1.2345678901234569E+150 5F182344CD3CDF9F
1.2345678901234569E+300 7E3D7EE8BCBBD352
-1.7976931348623157E+308 FFEFFFFFFFFFFFFF
1.7976931348623157E+308 7FEFFFFFFFFFFFFF
4.9406564584124654E-324 0000000000000001
NaN FFF8000000000000
-Infinity FFF0000000000000
Infinity 7FF0000000000000
*/
Plattformen
Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.
Versionsinformationen
.NET Framework
Unterstützt in: 2.0, 1.1, 1.0