public function _testNegativeExpGmppow()
{
if (function_exists('gmp_pow')) {
$this->assertEquals(0.25, PMA_pow(2, -2, 'gmp_pow'));
} else {
$this->markTestSkipped('function gmp_pow() does not exist');
}
}
/**
* Based on IP Pattern Matcher
* Originally by J.Adams <*****@*****.**>
* Found on <http://www.php.net/manual/en/function.ip2long.php>
* Modified for phpMyAdmin
*
* Matches:
* xxx.xxx.xxx.xxx (exact)
* xxx.xxx.xxx.[yyy-zzz] (range)
* xxx.xxx.xxx.xxx/nn (CIDR)
*
* Does not match:
* xxx.xxx.xxx.xx[yyy-zzz] (range, partial octets not supported)
*
* @param string $testRange string of IP range to match
* @param string $ipToTest string of IP to test against range
*
* @return boolean always true
*
* @access public
*/
function PMA_ipMaskTest($testRange, $ipToTest)
{
$result = true;
$match = preg_match('|([0-9]+)\\.([0-9]+)\\.([0-9]+)\\.([0-9]+)/([0-9]+)|', $testRange, $regs);
if ($match) {
// performs a mask match
$ipl = ip2long($ipToTest);
$rangel = ip2long($regs[1] . '.' . $regs[2] . '.' . $regs[3] . '.' . $regs[4]);
$maskl = 0;
for ($i = 0; $i < 31; $i++) {
if ($i < $regs[5] - 1) {
$maskl = $maskl + PMA_pow(2, 30 - $i);
}
// end if
}
// end for
if (($maskl & $rangel) == ($maskl & $ipl)) {
return true;
} else {
return false;
}
} else {
// range based
$maskocts = explode('.', $testRange);
$ipocts = explode('.', $ipToTest);
// perform a range match
for ($i = 0; $i < 4; $i++) {
if (preg_match('|\\[([0-9]+)\\-([0-9]+)\\]|', $maskocts[$i], $regs)) {
if ($ipocts[$i] > $regs[2] || $ipocts[$i] < $regs[1]) {
$result = false;
}
// end if
} else {
if ($maskocts[$i] != $ipocts[$i]) {
$result = false;
}
// end if
}
// end if/else
}
//end for
}
//end if/else
return $result;
}
/**
* Returns the number of bytes when a formatted size is given
*
* @param string $formatted_size the size expression (for example 8MB)
*
* @return integer The numerical part of the expression (for example 8)
*/
function PMA_extractValueFromFormattedSize($formatted_size)
{
$return_value = -1;
if (preg_match('/^[0-9]+GB$/', $formatted_size)) {
$return_value = substr($formatted_size, 0, -2) * PMA_pow(1024, 3);
} elseif (preg_match('/^[0-9]+MB$/', $formatted_size)) {
$return_value = substr($formatted_size, 0, -2) * PMA_pow(1024, 2);
} elseif (preg_match('/^[0-9]+K$/', $formatted_size)) {
$return_value = substr($formatted_size, 0, -1) * PMA_pow(1024, 1);
}
return $return_value;
}
/**
* Formats $value to the given length and appends SI prefixes
* $comma is not substracted from the length
* with a $length of 0 no truncation occurs, number is only formated
* to the current locale
*
* examples:
* <code>
* echo PMA_formatNumber(123456789, 6); // 123,457 k
* echo PMA_formatNumber(-123456789, 4, 2); // -123.46 M
* echo PMA_formatNumber(-0.003, 6); // -3 m
* echo PMA_formatNumber(0.003, 3, 3); // 0.003
* echo PMA_formatNumber(0.00003, 3, 2); // 0.03 m
* echo PMA_formatNumber(0, 6); // 0
*
* </code>
* @param double $value the value to format
* @param integer $length the max length
* @param integer $comma the number of decimals to retain
* @param boolean $only_down do not reformat numbers below 1
*
* @return string the formatted value and its unit
*
* @access public
*
* @author staybyte, sebastian mendel
* @version 1.1.0 - 2005-10-27
*/
function PMA_formatNumber($value, $length = 3, $comma = 0, $only_down = false)
{
//number_format is not multibyte safe, str_replace is safe
if ($length === 0) {
return str_replace(array(',', '.'), array($GLOBALS['number_thousands_separator'], $GLOBALS['number_decimal_separator']), number_format($value, $comma));
}
// this units needs no translation, ISO
$units = array(-8 => 'y', -7 => 'z', -6 => 'a', -5 => 'f', -4 => 'p', -3 => 'n', -2 => 'µ', -1 => 'm', 0 => ' ', 1 => 'k', 2 => 'M', 3 => 'G', 4 => 'T', 5 => 'P', 6 => 'E', 7 => 'Z', 8 => 'Y');
// we need at least 3 digits to be displayed
if (3 > $length + $comma) {
$length = 3 - $comma;
}
// check for negative value to retain sign
if ($value < 0) {
$sign = '-';
$value = abs($value);
} else {
$sign = '';
}
$dh = PMA_pow(10, $comma);
$li = PMA_pow(10, $length);
$unit = $units[0];
if ($value >= 1) {
for ($d = 8; $d >= 0; $d--) {
if (isset($units[$d]) && $value >= $li * PMA_pow(1000, $d - 1)) {
$value = round($value / (PMA_pow(1000, $d) / $dh)) / $dh;
$unit = $units[$d];
break 1;
}
// end if
}
// end for
} elseif (!$only_down && (double) $value !== 0.0) {
for ($d = -8; $d <= 8; $d++) {
// force using pow() because of the negative exponent
if (isset($units[$d]) && $value <= $li * PMA_pow(1000, $d - 1, 'pow')) {
$value = round($value / (PMA_pow(1000, $d, 'pow') / $dh)) / $dh;
$unit = $units[$d];
break 1;
}
// end if
}
// end for
}
// end if ($value >= 1) elseif (!$only_down && (float) $value !== 0.0)
//number_format is not multibyte safe, str_replace is safe
$value = str_replace(array(',', '.'), array($GLOBALS['number_thousands_separator'], $GLOBALS['number_decimal_separator']), number_format($value, $comma));
return $sign . $value . ' ' . $unit;
}
