php.net |  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login
Bug #46297 Round Issue
Submitted: 2008-10-15 05:19 UTC Modified: 2008-10-15 07:45 UTC
From: rob at washeretoo dot com Assigned:
Status: Not a bug Package: Math related
PHP Version: 5.2.6 OS: Linux
Private report: No CVE-ID: None
View Add Comment Developer Edit
Welcome! If you don't have a Git account, you can't do anything here.
You can add a comment by following this link or if you reported this bug, you can edit this bug over here.
(description)
Block user comment
Status: Assign to:
Package:
Bug Type:
Summary:
From: rob at washeretoo dot com
New email:
PHP Version: OS:

 

 [2008-10-15 05:19 UTC] rob at washeretoo dot com
Description:
------------
round (1125.005, 2)
returns "1125.01" as expected

round(11125.005, 2)
returns "11125"

when the value before the decimal point gets to large it simply 
strips the decimal point value off!??

Reproduce code:
---------------
print round (1125.005, 2);
print round(11125.005, 2);

Expected result:
----------------
round(11125.005, 2) should return 11125.01

Actual result:
--------------
round(11125.005, 2) returns 11125

Patches

Add a Patch

Pull Requests

Add a Pull Request

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2008-10-15 07:45 UTC] derick@php.net
Floating point values have a limited precision. Hence a value might 
not have the same string representation after any processing. That also
includes writing a floating point value in your script and directly 
printing it without any mathematical operations.

If you would like to know more about "floats" and what IEEE
754 is, read this:
http://docs.sun.com/source/806-3568/ncg_goldberg.html
 
Thank you for your interest in PHP.

.
 
PHP Copyright © 2001-2022 The PHP Group
All rights reserved.
Last updated: Sat Aug 13 10:05:43 2022 UTC