C++ Challenge

[Jon 793]

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

e.g.

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.

[MattNis 0]

Convert the double to a string and search for a "."

look here

http://www.eng-tips.com/gviewthread.cfm/le...d/536/qid/53657

[Valik 468]

Did you find a solution to this problem, Jon, or did you just use __int64 anyway?

[Jon 793]

The current version of mingw seems to support __int64 so I just used that