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Bug #22333 Error in math operation
Submitted: 2003-02-20 08:26 UTC Modified: 2003-02-20 08:35 UTC
From: paulo at gruposim dot com dot br Assigned:
Status: Not a bug Package: Math related
PHP Version: 4.3.1 OS: Windows ME 4.90.3000
Private report: No CVE-ID: None
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 [2003-02-20 08:26 UTC] paulo at gruposim dot com dot br
$x  = 0.7;
$x -= 0.3;
$x -= 0.4;
var_dump($x); // return float(-5.55111512313E-17) and not float(0) 


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 [2003-02-20 08:35 UTC]
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at and the instructions on how to report
a bug at

Not a bug:
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Last updated: Wed Mar 22 13:05:49 2023 UTC