public function testGetWithNoCalculatorSetDetectsCalculator()
{
$currentCalculator = Calculator::get();
Calculator::set(null);
$this->assertInstanceOf(Calculator::getNamespace(), Calculator::get());
Calculator::set($currentCalculator);
}
/**
* Returns a string representation of this number in the given base.
*
* @param int $base
*
* @return string
*
* @throws \InvalidArgumentException If the base is out of range.
*/
public function toBase($base)
{
$base = (int) $base;
if ($base === 10) {
return $this->value;
}
if ($base < 2 || $base > 36) {
throw new \InvalidArgumentException(sprintf('Base %d is out of range [2, 36]', $base));
}
$dictionary = '0123456789abcdefghijklmnopqrstuvwxyz';
$calc = Calculator::get();
$value = $this->value;
$negative = $value[0] === '-';
if ($negative) {
$value = substr($value, 1);
}
$base = (string) $base;
$result = '';
while ($value !== '0') {
list($value, $remainder) = $calc->divQR($value, $base);
$remainder = (int) $remainder;
$result .= $dictionary[$remainder];
}
if ($negative) {
$result .= '-';
}
return strrev($result);
}
require 'vendor/autoload.php';
/**
* @return Calculator
*/
function getCalculatorImplementation()
{
switch ($calculator = getenv('CALCULATOR')) {
case 'GMP':
$calculator = new Calculator\GmpCalculator();
break;
case 'BCMath':
$calculator = new Calculator\BcMathCalculator();
break;
case 'Native':
$calculator = new Calculator\NativeCalculator();
break;
default:
if ($calculator === false) {
echo 'CALCULATOR environment variable not set!' . PHP_EOL;
} else {
echo 'Unknown calculator: ' . $calculator . PHP_EOL;
}
echo 'Example usage: CALCULATOR={calculator} vendor/bin/phpunit' . PHP_EOL;
echo 'Available calculators: GMP, BCMath, Native' . PHP_EOL;
exit(1);
}
echo 'Using ', get_class($calculator), PHP_EOL;
return $calculator;
}
Calculator::set(getCalculatorImplementation());
/**
* {@inheritdoc}
*/
public function compareTo($that)
{
$that = BigNumber::of($that);
if ($that instanceof BigInteger) {
$that = $that->toBigDecimal();
}
if ($that instanceof BigDecimal) {
$this->scaleValues($this, $that, $a, $b);
return Calculator::get()->cmp($a, $b);
}
return -$that->compareTo($this);
}
