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Annotation of embedaddon/php/ext/standard/tests/math/log.phpt, revision 1.1.1.1

1.1       misho       1: --TEST--
                      2: log() tests
                      3: --FILE--
                      4: <?php // $Id: log.phpt 242949 2007-09-26 15:44:16Z cvs2svn $
                      5: echo "On failure, please mail result to php-dev@lists.php.net\n";
                      6: for ($x = 0, $count= 0; $x < 200; $x++) {
                      7:     $x2 = (int) exp(log($x));
                      8:     // e ^ log(x) should be close in range to x
                      9:     if (($x2 < ($x + 2)) && ($x2 > ($x - 2))) { 
                     10:         $count++; 
                     11:     } else {
                     12:         print "$x : $x2\n";
                     13:     }
                     14: }
                     15: print $count . "\n";
                     16: 
                     17: // Now test the base form of log
                     18: for ($base = 2; $base < 11; $base++) {
                     19:     for ($x = 0, $count= 0; $x < 50; $x++) {
                     20:         $x2 = (int) pow($base, log($x, $base));
                     21:         // base ^ log(x) should be close in range to x
                     22:         if (($x2 < ($x + 2)) && ($x2 > ($x - 2))) { 
                     23:             $count++; 
                     24:         } else {
                     25:              print "base $base: $x : $x2\n";
                     26:         }
                     27:     }
                     28:     print $count . "\n";
                     29: }
                     30: ?>
                     31: --EXPECT--
                     32: On failure, please mail result to php-dev@lists.php.net
                     33: 200
                     34: 50
                     35: 50
                     36: 50
                     37: 50
                     38: 50
                     39: 50
                     40: 50
                     41: 50
                     42: 50