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<?php
/**
* This file is part of the ramsey/uuid library
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
* @license http://opensource.org/licenses/MIT MIT
*/
declare(strict_types=1);
namespace Ramsey\Uuid;
/**
* Provides binary math utilities
*/
class BinaryUtils
{
/**
* Applies the variant field to the 16-bit clock sequence
*
* @link https://www.rfc-editor.org/rfc/rfc9562#section-4.1 RFC 9562, 4.1. Variant Field
*
* @param int $clockSeq The 16-bit clock sequence value before the variant is applied
*
* @return int The 16-bit clock sequence multiplexed with the UUID variant
*
* @pure
*/
public static function applyVariant(int $clockSeq): int
{
return ($clockSeq & 0x3fff) | 0x8000;
}
/**
* Applies the version field to the 16-bit `time_hi_and_version` field
*
* @link https://www.rfc-editor.org/rfc/rfc9562#section-4.2 RFC 9562, 4.2. Version Field
*
* @param int $timeHi The value of the 16-bit `time_hi_and_version` field before the version is applied
* @param int $version The version to apply to the `time_hi` field
*
* @return int The 16-bit time_hi field of the timestamp multiplexed with the UUID version number
*
* @pure
*/
public static function applyVersion(int $timeHi, int $version): int
{
return ($timeHi & 0x0fff) | ($version << 12);
}
}
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