comparing floating point numbers

[John Deighan]

Is there a safe way to compare 2 floating point numbers in Perl? I 
have 2 numbers, one of which was created by accumulating a series of 
other numbers into it - the other was entered directly. My debugger 
says that they're both '630.24', and when I print them, they both 
print as '630.24'. However, the == test fails and the != test 
succeeds. I can only think of taking their difference and checking if 
that's less than something like 0.001. Is there a better way?

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