Looks like your standard floating point inaccuracies to me. Try 

$num1 = 12e-4;
$num2 = 1.2e-3;
printf("%.18g\n", $num1);
printf("%.18g\n", $num2);

[download]

(Sorry, I can't call a scalar that's meant to hold a numeric value "string" anything)

Remember that something somewhere has to do the computation to turn that scientific notation into a real number and that any computation involving floating point numbers is sure to have precision problems.

duff

In reply to Re: bug in Perl compilation? by duff
in thread bug in Perl compilation? by bkgallo

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