Negative integers

johnewing john.ewi at
Wed Aug 20 23:38:11 CEST 2008

I am trying to figure out how to test if two numbers are of the same
sign (both positive or both negative).  I have tried

abs(x) / x == abs(y) / y

but that fails when one of the numbers is 0.  I'm sure that there is
an easy way to do this.  Any suggestions?


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