BitConverter::Int64BitsToDouble Method (Int64)
.NET Framework (current version)
Converts the specified 64-bit signed integer to a double-precision floating point number.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- value
-
Type:
System::Int64
The number to convert.
Return Value
Type: System::DoubleA double-precision floating point number whose value is equivalent to value.
Typically, value is an integer that is returned by the DoubleToInt64Bits method.
The following code example converts the bit patterns of several Int64 values to Double values with the Int64BitsToDouble method.
// Example of the BitConverter::Int64BitsToDouble method. using namespace System; // Reinterpret the __int64 argument as a double. void LongBitsToDouble( __int64 argument ) { double doubleValue; doubleValue = BitConverter::Int64BitsToDouble( argument ); // Display the argument in hexadecimal. Console::WriteLine( "{0,20}{1,27:E16}", String::Format( "0x{0:X16}", argument ), doubleValue ); } int main() { Console::WriteLine( "This example of the BitConverter::Int64BitsToDouble( " "__int64 ) \nmethod generates the following output.\n" ); Console::WriteLine( "{0,20}{1,27:E16}", "__int64 argument", "double value" ); Console::WriteLine( "{0,20}{1,27:E16}", "----------------", "------------" ); // Convert __int64 values and display the results. LongBitsToDouble( 0 ); LongBitsToDouble( 0x3FF0000000000000 ); LongBitsToDouble( 0x402E000000000000 ); LongBitsToDouble( 0x406FE00000000000 ); LongBitsToDouble( 0x41EFFFFFFFE00000 ); LongBitsToDouble( 0x3F70000000000000 ); LongBitsToDouble( 0x3DF0000000000000 ); LongBitsToDouble( 0x0000000000000001 ); LongBitsToDouble( 0x000000000000FFFF ); LongBitsToDouble( 0x0000FFFFFFFFFFFF ); LongBitsToDouble( 0xFFFFFFFFFFFFFFFF ); LongBitsToDouble( 0xFFF0000000000000 ); LongBitsToDouble( 0x7FF0000000000000 ); LongBitsToDouble( 0xFFEFFFFFFFFFFFFF ); LongBitsToDouble( 0x7FEFFFFFFFFFFFFF ); LongBitsToDouble( Int64::MinValue ); LongBitsToDouble( Int64::MaxValue ); } /* This example of the BitConverter::Int64BitsToDouble( __int64 ) method generates the following output. __int64 argument double value ---------------- ------------ 0x0000000000000000 0.0000000000000000E+000 0x3FF0000000000000 1.0000000000000000E+000 0x402E000000000000 1.5000000000000000E+001 0x406FE00000000000 2.5500000000000000E+002 0x41EFFFFFFFE00000 4.2949672950000000E+009 0x3F70000000000000 3.9062500000000000E-003 0x3DF0000000000000 2.3283064365386963E-010 0x0000000000000001 4.9406564584124654E-324 0x000000000000FFFF 3.2378592100206092E-319 0x0000FFFFFFFFFFFF 1.3906711615669959E-309 0xFFFFFFFFFFFFFFFF NaN 0xFFF0000000000000 -Infinity 0x7FF0000000000000 Infinity 0xFFEFFFFFFFFFFFFF -1.7976931348623157E+308 0x7FEFFFFFFFFFFFFF 1.7976931348623157E+308 0x8000000000000000 0.0000000000000000E+000 0x7FFFFFFFFFFFFFFF NaN */
Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 4.0
Windows Phone Silverlight
Available since 7.1
Windows Phone
Available since 8.1
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 4.0
Windows Phone Silverlight
Available since 7.1
Windows Phone
Available since 8.1
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