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C++ Challenge


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Can anyone think of a simple way to determine if any given double data type is a whole number or not?


double dTest = 4294967306.22452

How can I test if dTest is a whole number or a floating point given that dTest is bigger than the long integer data type so you can't just convert double to long and back then compare.

I also don't want to use __int64 because it's freaky on MinGW

There's probably a simple solution I'm completely missing. Or maybe _int64 is the only way to go.

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