Bug #80144 [NEW]: if you go to do the sum is 0, but php returns 3.3306690738755E-15. Why?

From: daniel dot maoloni at gmail dot com Operating system: Windows 10 Pro - XAMMP PHP version: 7.4.10 Package: *Math Functions Bug Type: Bug Bug description:if you go to do the sum is 0, but php returns 3.3306690738755E-15. Why? Description: ------------ $a=33.460000; $b=-34.870000; $c=1.410000; echo $a+$b+$c; result PHP : 3.3306690738755E-15 if you go to do the sum is 0, but php returns 3.3306690738755E-15. Why? thank you Test script: --------------- $a=33.460000; $b=-34.870000; $c=1.410000; echo $a+$b+$c; -- Edit bug report at https://bugs.php.net/bug.php?id=80144&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=80144&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=80144&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=80144&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=80144&r=needscript Try newer version: https://bugs.php.net/fix.php?id=80144&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=80144&r=support Expected behavior: https://bugs.php.net/fix.php?id=80144&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=80144&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=80144&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=80144&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=80144&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=80144&r=dst IIS Stability: https://bugs.php.net/fix.php?id=80144&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=80144&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=80144&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=80144&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=80144&r=mysqlcfg