Bug #54458 [Opn->Bgs]: Comparison with intval()

Edit report at http://bugs.php.net/bug.php?id=54458&edit=1 ID: 54458 Updated by: cataphract@php.net Reported by: cs dot luizeduardo at hotmail dot com Summary: Comparison with intval() -Status: Open +Status: Bogus Type: Bug Package: Variables related Operating System: Windows PHP Version: 5.3SVN-2011-04-03 (SVN) Block user comment: N Private report: N New Comment: In[1]:= SetAccuracy[(1.1*100.), Infinity] - 110 // N[#, 20] & Out[1]= 1.4210854715202003717*10^-14 In[2]:= SetAccuracy[110., Infinity] - 110 // N[#, 20] & Out[2]= 0 110 is exactly representable in an IEEE 754 double precision number; 1.1 is not. When 1.1 is multiplied by 100, the error in the representation of 1.1 is propagated and we don't end up with the exact 110. In PHP: echo sprintf("%.20f %.20f\n", 110., 1.1 * 100); 110.00000000000000000000 110.00000000000001421085 Closing as bogus. Previous Comments: ------------------------------------------------------------------------ [2011-04-03 17:31:45] cs dot luizeduardo at hotmail dot com Description: ------------ comparisons with intval() function with real values between 1 and 2 (like 1.2 1.3 etc). Every return any fail; Test script: --------------- $numero = "1.1"; if (intval($numero * 100) == $numero * 100) { echo intval($numero * 100) . ":" . $numero * 100 . "<br/>"; echo "Number OK!"; } else { echo intval($numero * 100) . ":" . $numero * 100 . "<br/>"; //Return 110:110 (same) but the comparison has fail echo "The number shoud contains 2 decimal places"; } Expected result: ---------------- 110:110 Number OK! OBS: With the variable with the 2.1 for example, the return result are the expected. Actual result: -------------- 110:110 The number shoud contains 2 decimal places ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=54458&edit=1