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Bug #24415 pi() and M_PI return float(3) - AGAIN
Submitted: 2003-06-30 11:54 UTC Modified: 2003-07-28 17:05 UTC
From: postings-php-bug at hans-spath dot de Assigned: edink (profile)
Status: Closed Package: Math related
PHP Version: 5.0.0b1 (beta1) OS: Windows XP
Private report: No CVE-ID: None
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 [2003-06-30 11:54 UTC] postings-php-bug at hans-spath dot de 
Description:
------------
Yeah right. PI = 3 ... given a big enough 3 and a small enough pi ...

Reproduce code:
---------------
<? var_dump(array(M_PI,pi())); ?>

Expected result:
----------------
M:\php>echo "<? var_dump(array(M_PI,pi())); ?>" | 431\php -q
"array(2) {
  [0]=>
  float(3.1415926535898)
  [1]=>
  float(3.1415926535898)
}
"

Actual result:
--------------
M:\php>echo "<? var_dump(array(M_PI,pi())); ?>" | 500b1\php -q
"array(2) {
  [0]=>
  float(3)
  [1]=>
  float(3)
}
"

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Pull Requests

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AllCommentsChangesGit/SVN commitsRelated reports
 [2003-06-30 13:38 UTC] sterling@php.net 
Tested on Windows and Linux, works on both.
 [2003-06-30 14:22 UTC] php dot net at siniath dot net 
Tested on Win2k SP3, fails exactly as described by reporter:

C:\PHP\5.0.0b1>echo "<? var_dump(array(M_PI,pi())); ?>" | php -q
"array(2) {
  [0]=>
  float(3)
  [1]=>
  float(3)
}
"

Definitely not bogus.
 [2003-06-30 14:27 UTC] postings-php-bug at hans-spath dot de 
Ok, I've tested one of the CVS-snaps, and it worked. So I think it's "closed" now and not "bogus".

M:\php\php5-win32-200306301130>echo "<? var_dump(array(M_PI,pi())); ?>" | php -q
"array(2) {
  [0]=>
  float(3.1415926535898)
  [1]=>
  float(3.1415926535898)
}
 [2003-07-01 06:57 UTC] postings-php-bug at hans-spath dot de 
===> PHP 5.0.0b1 (beta1) <===
M:\php>echo "<? var_dump(M_PI);var_dump(pi()); ?>" | 500b1\php -q
"float(3)
float(3)
"

===> PHP 5.0.0b2-dev (php5-win32-200306301130.zip) <===
M:\php>echo "<? var_dump(M_PI);var_dump(pi()); ?>" | 500dev200306301130\php -q
"float(3.1415926535898)
float(3.1415926535898)
"

===> PHP 5.0.0b2-dev (php5-win32-200307011030.zip) <===
M:\php>echo "<? var_dump(M_PI);var_dump(pi()); ?>" | 500dev200307011030\php -q
"float(3)
float(3)
"
 [2003-07-01 11:32 UTC] sniper@php.net 
Works fine:

# php -r 'var_dump(pi());'
float(3.1415926535898)

Check your php.ini settings...precision especially.
 [2003-07-01 12:29 UTC] postings-php-bug at hans-spath dot de 
It'm really pissed off now! What about setting the bug to "Feedback" instead of "Bogus", hu? Yes, my results are very strange, but I use *your* Builds and get different results on the same machine (Windows XP (German)). AND a friend of mine can reproduce this under Windows 2000 SP3 (German).

I use similar INIs for all 4 versions. Same Problem with CGI and CLI.

Problem exists in
(WIN) PHP 5.0.0b1 (cgi-fcgi) (built: Jun 28 2003 00:31:05)
(WIN) PHP 5.0.0b2-dev (cgi-fcgi) (built: Jul  1 2003 12:10:02)
(WIN) PHP 5.0.0b2-dev (cgi-fcgi) (built: Jul  1 2003 16:10:06)

But NOT in
(WIN) PHP 5.0.0b2-dev (cgi-fcgi) (built: Jun 30 2003 13:41:33)
(LINUX) PHP 5.0.0b2-dev (php5-200307011530.tar.bz2)

===> PHP 5.0.0b2-dev (php5-win32-200307011430.zip) <===
M:\php>echo "<? var_dump(M_PI);var_dump(pi()); ?>" | 500dev200307011430\php -q
"float(3)
float(3)
"

===> INI, precision <===
M:\php>grep -e "^precision" 500dev200307011430\php.ini
precision    =  14

===> INI, diff <===
M:\php>diff 500dev200306301130\php.ini 500dev200307011030\php.ini
377c377
< extension_dir = "m:/php/500dev200306301130/extensions/"
---
> extension_dir = "m:/php/500dev200307011030/extensions/"
778c778
< session.save_path = "m:/php/500dev200306301130/session"
---
> session.save_path = "m:/php/500dev200307011030/session"
 [2003-07-07 10:18 UTC] sniper@php.net 
This is due to some funky build problem Edin has,
assigning to him.
 [2003-07-28 17:05 UTC] edink@php.net 
This problem is fixed now.
 
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