protected function replaceHashValueRange($value, $min, $max)
{
if (stripos($value, 'H') !== false) {
$twister = new twister();
$twister->init_with_string($this->hash_data);
$value = str_ireplace('H', $twister->rangeint($min, $max), $value);
}
return $value;
}
public function testRangeIntWorksOnWidest64BitRange()
{
if (PHP_INT_SIZE !== 8) {
$this->markTestSkipped('not a 64-bit system');
}
#> Given
$twister = new twister(42);
/*<
The Mersenne Twister is deterministic, so we can initialise it
with any value that makes the assertion below true.
*/
#> When
$rand = $twister->rangeint(-PHP_INT_MAX - 1, PHP_INT_MAX);
#> Then
$this->assertNotEquals($rand, 0);
}
for ($i = 0; $i < $num_iters; $i++) {
$sum += $twister3->rangereal_halfopen(10, 20);
}
/*
the call to rangereal_halfopen produces a
floating-point number >= 10 and < 20
*/
print "This is the average, " . "which should be about 15: " . $sum / $num_iters . "\n";
$twister3 = unserialize($saved);
# run the loop again
#
$sum = 0;
for ($i = 0; $i < $num_iters; $i++) {
$sum += $twister3->rangereal_halfopen(10, 20);
}
print "This is the average again, " . "which should be the same as before: " . $sum / $num_iters . "\n";
#--------------------------------------------
$twister4 = new twister();
$twister4->init_with_file("/dev/urandom", twister::N);
/*
This reads characters from /dev/urandom and
uses them to initialise the random number
generator.
The second argument is multiplied by 4 and
then used as an upper bound on the number of
characters to read.
*/
if ($twister4->rangeint(1, 6) == 6) {
print "You've won -- congratulations!\n";
}
