#25694 [Opn->Ver]: Round and number_format give inconsistent results.

From: Date: Tue, 30 Sep 2003 18:12:15 +0000
Subject: #25694 [Opn->Ver]: Round and number_format give inconsistent results.
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-48334@lists.php.net to get a copy of this message 
 ID:               25694
 Updated by:       sniper@php.net
 Reported By:      russ at kdimail dot com
-Status:           Open
+Status:           Verified
-Bug Type:         *Math Functions
+Bug Type:         Math related
 Operating System: RedHat Linux 7.3
-PHP Version:      4.3.3
+PHP Version:      4CVS, 5CVS


Previous Comments:
------------------------------------------------------------------------

[2003-09-29 14:40:12] russ at kdimail dot com

Description:
------------
Round and number_format seem to be rounding the same numbers in
different ways, also the output of the "round" function does not match
the example given in the php documentation. 

Round just seems to be always rounding up.  Number format seems to be
rounding either up or down depending on the value of the number before
the decimal point.  

In my php.ini I have changed precision = 14.

Reproduce code:
---------------
echo "round 0.045 = " . round(0.045, 2) . "<br>";
echo "number format 0.045 = " . number_format(0.045, 2) .
"<br><br>";
echo "round 0.055 = " . round(0.055, 2) . "<br>";
echo "number format 0.055 = " . number_format(0.055, 2) .
"<br><br>";
echo "round 5.045 = " . round(5.045, 2) . "<br>";
echo "number format 5.045 = " . number_format(5.045, 2) .
"<br><br>";
echo "round 5.055 = " . round(5.055, 2) . "<br>";
echo "number format 5.055 = " . number_format(5.055, 2) .
"<br><br>";
echo "round 3.025 = " . round(3.025, 2) . "<br>";
echo "number format 3.025 = " . number_format(3.025, 2) .
"<br><br>";
echo "round 4.025 = " . round(4.025, 2) . "<br>";
echo "number format 4.025 = " . number_format(4.025, 2) .
"<br><br>";


Actual result:
--------------
round 0.045 = 0.05
number format 0.045 = 0.05

round 0.055 = 0.06
number format 0.055 = 0.06

round 5.045 = 5.05
number format 5.045 = 5.04

round 5.055 = 5.06
number format 5.055 = 5.05

round 3.025 = 3.03
number format 3.025 = 3.02

round 4.025 = 4.03
number format 4.025 = 4.03


------------------------------------------------------------------------


-- 
Edit this bug report at http://bugs.php.net/?id=25694&edit=1

Thread (4 messages)

« previous php.bugs (#48334) next »