ID: 48455
User updated by: aldo at totalaldo dot com
Reported By: aldo at totalaldo dot com
Status: Bogus
Bug Type: Strings related
Operating System: FreeBSD 7.2-RELEASE
PHP Version: 5.2.9
New Comment:
Thank you for your prompt reply. I was aware of the limitations of
Floating point representations.. Hopefully, anyone using similar code
will now use another technique.
php -r 'echo sprintf("%6s", 34.98*100);' outputs the expected result
of
3498.
Previous Comments:
------------------------------------------------------------------------
[2009-06-02 17:52:23] [email protected]
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.
------------------------------------------------------------------------
[2009-06-02 17:51:03] aldo at totalaldo dot com
Description:
------------
php -r 'echo sprintf("%6d", 34.98*100);'
output: 3497
Reproduce code:
---------------
php -r 'echo sprintf("%6d", 34.98*100);'
Expected result:
----------------
3498
Actual result:
--------------
3497
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Edit this bug report at http://bugs.php.net/?id=48455&edit=1
