Bug #72938 [NEW]: Wrong output for intval of floats
From: inggo dot espinosa at gmail dot com
Operating system: Ubuntu 14.04
PHP version: 7.0.10
Package: Math related
Bug Type: Bug
Bug description:Wrong output for intval of floats
Description:
------------
When using intval, float conversion is off for some very specific
numbers. Please see my Test script below.
Test script:
---------------
<?php
echo intval(160.70 * 100) . "\n"; // Expected 16070, got 16069
echo intval(150.70 * 100) . "\n"; // Expected 15070, got 15069
echo intval(140.70 * 100) . "\n"; // Expected 14070, got 14069
echo intval(130.70 * 100) . "\n"; // Expected 13070, got 13069
echo intval(120.70 * 100) . "\n"; // Strangely, this gives the correct
value of 12070
echo intval(160.50 * 100) . "\n"; // This also gives the correct value
of 16050
echo intval(160.60 * 100) . "\n"; // This also gives the correct value
of 16060
echo intval(170.70 * 100) . "\n"; // This also gives the correct value
of 17070
echo intval(strval(160.70 * 100)); // This is the workaround that I am
doing for now
Expected result:
----------------
16070
15070
14070
13070
12070
16050
16060
17070
16070
Actual result:
--------------
16069
15069
14069
13069
12070
16050
16060
17070
16070
--
Edit bug report at https://bugs.php.net/bug.php?id=72938&edit=1
--
Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=72938&r=trysnapshot54
Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=72938&r=trysnapshot55
Try a snapshot (trunk): https://bugs.php.net/fix.php?id=72938&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=72938&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=72938&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=72938&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=72938&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=72938&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=72938&r=support
Expected behavior: https://bugs.php.net/fix.php?id=72938&r=notwrong
Not enough info: https://bugs.php.net/fix.php?id=72938&r=notenoughinfo
Submitted twice: https://bugs.php.net/fix.php?id=72938&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=72938&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=72938&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=72938&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=72938&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=72938&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=72938&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=72938&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=72938&r=mysqlcfg
Thread (2 messages)
- inggo dot espinosa at gmail dot com