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43 lines
871 B
PHP
43 lines
871 B
PHP
--TEST--
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log() tests
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--FILE--
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<?php // $Id$
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echo "On failure, please mail result to php-dev@lists.php.net\n";
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for ($x = 0, $count= 0; $x < 200; $x++) {
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$x2 = (int) exp(log($x));
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// e ^ log(x) should be close in range to x
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if (($x2 < ($x + 2)) && ($x2 > ($x - 2))) {
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$count++;
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} else {
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print "$x : $x2\n";
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}
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}
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print $count . "\n";
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// Now test the base form of log
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for ($base = 2; $base < 11; $base++) {
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for ($x = 0, $count= 0; $x < 50; $x++) {
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$x2 = (int) pow($base, log($x, $base));
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// base ^ log(x) should be close in range to x
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if (($x2 < ($x + 2)) && ($x2 > ($x - 2))) {
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$count++;
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} else {
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print "base $base: $x : $x2\n";
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}
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}
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print $count . "\n";
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}
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?>
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--EXPECT--
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On failure, please mail result to php-dev@lists.php.net
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200
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50
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50
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50
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50
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50
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50
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50
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50
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50
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