文件操作 - AMQPDecimal.php
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文件: /usr/share/php/PhpAmqpLib/Wire/AMQPDecimal.php
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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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