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Bug #61524 Incorrect result of printf() with 64-bit value on 32-bit architecture
Submitted: 2012-03-27 08:27 UTC Modified: 2012-03-27 08:57 UTC
Votes:1
Avg. Score:5.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:1 (100.0%)
From: dvzolotarev at gmail dot com Assigned:
Status: Not a bug Package: Variables related
PHP Version: 5.4.0 OS: Debian 6.0.4
Private report: No CVE-ID: None
View Developer Edit
 [2012-03-27 08:27 UTC] dvzolotarev at gmail dot com 
Description:
------------
Instead 5718813258875302619 output 5718813258875302912

Test script:
---------------
<?php
$a = 5718813258875302619;
printf("%f\n", $a);
?>

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 [2012-03-27 08:57 UTC] cataphract@php.net 
You're printing it as a float (double precision) and the rounding error is much larger than 1 for such a big number.
 [2012-03-27 08:57 UTC] cataphract@php.net
-Status: Open +Status: Not a bug
 
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