Bug #16036 Updated: in_array() with pow()
ID: 16036 Updated by: [EMAIL PROTECTED] Reported By: [EMAIL PROTECTED] -Status: Open +Status: Bogus Bug Type: *Math Functions Operating System: Solaris PHP Version: 4.1.0 New Comment: var_dump() _ONLY_ works on variables. Previous Comments: [2002-03-13 06:15:21] [EMAIL PROTECTED] $a = pow(2,31); $b = array($a); var_dump( in_array(2147483648, $b)); $b = array(2147483648); var_dump( in_array(2147483648, $b)); // this is the result. how come there are different? bool(false) bool(true) -- Edit this bug report at http://bugs.php.net/?id=16036edit=1
Bug #16036 Updated: in_array() with pow()
ID: 16036 Updated by: [EMAIL PROTECTED] Reported By: [EMAIL PROTECTED] Status: Bogus Bug Type: *Math Functions Operating System: Solaris PHP Version: 4.1.0 New Comment: This is a variation of the commonly asked floating point number comparison question. At numbers beyond 2^31-1 pow() returns a float. Doing exact comparisons of an integer against a floating point value in any computer language is tricky because of the way floating point numbers are represented. You could make sure your precision is set the way you want and convert to a string, or apply a fuzz factor. Previous Comments: [2002-03-13 06:20:57] [EMAIL PROTECTED] var_dump() _ONLY_ works on variables. [2002-03-13 06:15:21] [EMAIL PROTECTED] $a = pow(2,31); $b = array($a); var_dump( in_array(2147483648, $b)); $b = array(2147483648); var_dump( in_array(2147483648, $b)); // this is the result. how come there are different? bool(false) bool(true) -- Edit this bug report at http://bugs.php.net/?id=16036edit=1
Bug #16036 Updated: in_array() with pow()
ID: 16036 Updated by: [EMAIL PROTECTED] Reported By: [EMAIL PROTECTED] Status: Bogus Bug Type: *Math Functions Operating System: Solaris PHP Version: 4.1.0 New Comment: Can anyone give me a workable version? I've tried even to convert all numbers into integers, floats or whatever. It still does not work. Previous Comments: [2002-03-13 06:23:40] [EMAIL PROTECTED] This is a variation of the commonly asked floating point number comparison question. At numbers beyond 2^31-1 pow() returns a float. Doing exact comparisons of an integer against a floating point value in any computer language is tricky because of the way floating point numbers are represented. You could make sure your precision is set the way you want and convert to a string, or apply a fuzz factor. [2002-03-13 06:20:57] [EMAIL PROTECTED] var_dump() _ONLY_ works on variables. [2002-03-13 06:15:21] [EMAIL PROTECTED] $a = pow(2,31); $b = array($a); var_dump( in_array(2147483648, $b)); $b = array(2147483648); var_dump( in_array(2147483648, $b)); // this is the result. how come there are different? bool(false) bool(true) -- Edit this bug report at http://bugs.php.net/?id=16036edit=1
Bug #16036 Updated: in_array() with pow()
ID: 16036 Updated by: [EMAIL PROTECTED] Reported By: [EMAIL PROTECTED] Status: Bogus Bug Type: *Math Functions Operating System: Solaris PHP Version: 4.1.0 New Comment: The bug database is not the place to ask questions like this. And like I mentioned, just convert to a string: $a = pow(2,31); $b = array($a); echo in_array(2147483648, $b); That prints 1 Previous Comments: [2002-03-13 06:47:58] [EMAIL PROTECTED] Can anyone give me a workable version? I've tried even to convert all numbers into integers, floats or whatever. It still does not work. [2002-03-13 06:23:40] [EMAIL PROTECTED] This is a variation of the commonly asked floating point number comparison question. At numbers beyond 2^31-1 pow() returns a float. Doing exact comparisons of an integer against a floating point value in any computer language is tricky because of the way floating point numbers are represented. You could make sure your precision is set the way you want and convert to a string, or apply a fuzz factor. [2002-03-13 06:20:57] [EMAIL PROTECTED] var_dump() _ONLY_ works on variables. [2002-03-13 06:15:21] [EMAIL PROTECTED] $a = pow(2,31); $b = array($a); var_dump( in_array(2147483648, $b)); $b = array(2147483648); var_dump( in_array(2147483648, $b)); // this is the result. how come there are different? bool(false) bool(true) -- Edit this bug report at http://bugs.php.net/?id=16036edit=1
