Double::IsNegativeInfinity Method (Double)


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Returns a value indicating whether the specified number evaluates to negative infinity.

Namespace:   System
Assembly:  mscorlib (in mscorlib.dll)

static bool IsNegativeInfinity(
	double d


Type: System::Double

A double-precision floating-point number.

Return Value

Type: System::Boolean

true if d evaluates to NegativeInfinity; otherwise, false.

Floating-point operations return NegativeInfinity to signal an overflow condition.

The following code example illustrates the use of IsNegativeInfinity:

// This will return S"true".
Console::WriteLine( "IsNegativeInfinity(-5.0 / 0) == {0}.", Double::IsNegativeInfinity(  -5.0 / zero ) ? (String^)"true" : "false" );
if ( d > Double::MaxValue )
   Console::WriteLine( "Your number is bigger than a double." );
// This will equal Infinity.
Console::WriteLine( "10.0 minus NegativeInfinity equals {0}.", (10.0 - Double::NegativeInfinity) );

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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