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<?php
namespace PhpAmqpLib\Wire;
use PhpAmqpLib\Exception\AMQPOutOfBoundsException;
use PhpAmqpLib\Helper\BigInteger;
/**
* AMQP protocol decimal value.
*
* Values are represented as (n,e) pairs. The actual value
* is n * 10^(-e).
*
* From 0.8 spec: Decimal values are
* not intended to support floating point values, but rather
* business values such as currency rates and amounts. The
* 'decimals' octet is not signed.
*/
class AMQPDecimal
{
/** @var int */
protected $n;
/** @var int */
protected $e;
/**
* @param int $n
* @param int $e
* @throws \PhpAmqpLib\Exception\AMQPOutOfBoundsException
*/
public function __construct($n, $e)
{
if ($e < 0) {
throw new AMQPOutOfBoundsException('Decimal exponent value must be unsigned!');
}
$this->n = $n;
$this->e = $e;
}
/**
* @return string
*/
public function asBCvalue()
{
$n = new BigInteger($this->n);
$e = new BigInteger('1' . str_repeat('0', $this->e));
list($q) = $n->divide($e);
return $q->toString();
}
/**
* @return int
*/
public function getE()
{
return $this->e;
}
/**
* @return int
*/
public function getN()
{
return $this->n;
}
}
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