Annotation of embedaddon/php/ext/standard/tests/math/log.phpt, revision 1.1.1.2
1.1 misho 1: --TEST--
2: log() tests
3: --FILE--
1.1.1.2 ! misho 4: <?php // $Id$
1.1 misho 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
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