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von raredesign | Dez 3, 2019 | Allgemein | 0 Kommentare

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Current Path : /proc/self/root/usr/local/src/php72/php-7.2.12/php-7.2.12/ext/standard/tests/math/

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Current File : //proc/self/root/usr/local/src/php72/php-7.2.12/php-7.2.12/ext/standard/tests/math/log.phpt

--TEST--
log() tests
--FILE--
<?php // $Id$
echo "On failure, please mail result to php-dev@lists.php.net\n";
for ($x = 0, $count= 0; $x < 200; $x++) {
    $x2 = (int) exp(log($x));
    // e ^ log(x) should be close in range to x
    if (($x2 < ($x + 2)) && ($x2 > ($x - 2))) {
        $count++;
    } else {
        print "$x : $x2\n";
    }
}
print $count . "\n";

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

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