Bug #75644 [NEW]: round(362.42499999999995, 2) gives incorrect result
From: markamery at btinternet dot com
Operating system: Ubuntu
PHP version: 7.1.12
Package: Math related
Bug Type: Bug
Bug description:round(362.42499999999995, 2) gives incorrect result
Description:
------------
Even though 362.42499999999995 is less than 362.425 (i.e. the
internally-stored IEEE-754 representation of 362.42499999999995 has a
value less than 362.425), round(362.42499999999995, 2) gives 362.43
It should give 362.42
Test script:
---------------
<?php
$x = 362.42499999999995;
echo $x . "\n";
echo round($x, 2) . "\n";
ini_set('precision', 999);
echo $x . "\n";
echo round($x, 2) . "\n";
Expected result:
----------------
362.425
362.42
362.424999999999954525264911353588104248046875
362.42000000000001591615728102624416351318359375
Actual result:
--------------
362.425
362.43
362.424999999999954525264911353588104248046875
362.43000000000000682121026329696178436279296875
--
Edit bug report at https://bugs.php.net/bug.php?id=75644&edit=1
--
Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=75644&r=trysnapshot54
Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=75644&r=trysnapshot55
Try a snapshot (trunk): https://bugs.php.net/fix.php?id=75644&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=75644&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=75644&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=75644&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=75644&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=75644&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=75644&r=support
Expected behavior: https://bugs.php.net/fix.php?id=75644&r=notwrong
Not enough info: https://bugs.php.net/fix.php?id=75644&r=notenoughinfo
Submitted twice: https://bugs.php.net/fix.php?id=75644&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=75644&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75644&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=75644&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=75644&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=75644&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=75644&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=75644&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=75644&r=mysqlcfg
Thread (4 messages)
- markamery at btinternet dot com