IsFinite() equivalent

c#, c++

Solution

!double.IsInfinity(x) && !double.IsNaN(x)

References: http://pubs.opengroup.org/onlinepubs/009604499/functions/isfinite.html http://msdn.microsoft.com/en-us/library/system.double.isinfinity.aspx http://msdn.microsoft.com/en-us/library/system.double.isnan.aspx

Problem

What is the C# replacement for the following define? ``` #define IS_FINITE(x) (0x7FF0 != (*((unsigned short*)(&x) + 3) & 0x7FF0)) ``` Maybe `double.IsInfinity(x) == false` or `double.IsNegativeInfinity(x) == false`? Thanks.

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