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<?php |
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/** |
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* PHP: Nelson Martell Library file |
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* |
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* Copyright © 2019 Nelson Martell (http://nelson6e65.github.io) |
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* |
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* Licensed under The MIT License (MIT) |
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* For full copyright and license information, please see the LICENSE |
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* Redistributions of files must retain the above copyright notice. |
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* |
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* @copyright 2019 Nelson Martell |
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* @link http://nelson6e65.github.io/php_nml/ |
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* @since 1.0.0 |
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License (MIT) |
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* */ |
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namespace NelsonMartell\Extensions; |
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use InvalidArgumentException; |
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use function NelsonMartell\msg; |
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use function NelsonMartell\typeof; |
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use NelsonMartell\IComparer; |
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/** |
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* Provides extension methods to handle numbers. |
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* |
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* @since 1.0.0 |
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* @author Nelson Martell <[email protected]> |
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* */ |
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class Numbers implements IComparer |
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{ |
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/** |
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* Ensures that object given is an integer. Else, thows an exception. |
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* |
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* @param mixed $obj Object to validate. |
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* |
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* @return float|int Same object given, but ensured that is a number. |
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* |
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* @throws InvalidArgumentException if object is not a `int` or `float`. |
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*/ |
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public static function ensureIsNumeric($obj) |
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{ |
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if (!is_int($obj) || !is_float($obj) || is_nan($obj)) { |
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$msg = msg('Provided object must to be an integer or float; "{0}" given.', typeof($obj)); |
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throw new InvalidArgumentException($msg); |
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} |
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return $obj; |
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} |
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/** |
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* {@inheritDoc} |
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* @param int|float|mixed $left |
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* @param int|float|mixed $right |
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* |
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* @return int|null |
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* |
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* @since 1.0.0 |
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*/ |
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public static function compare($left, $right) |
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{ |
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$r = null; |
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if (is_numeric($left)) { |
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if (is_numeric($right)) { |
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$r = $left - $right; |
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if ($r > 0) { |
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$r = (int) ceil($r); |
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} else { |
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$r = (int) floor($r); |
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} |
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} elseif ($right === null || is_nan($right)) { |
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$r = 1; |
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} elseif (typeof($right)->isCustom()) { |
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$r = -1; |
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} else { |
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$r = null; |
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} |
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} elseif (is_numeric($right)) { |
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$r = static::compare($right, $left); |
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if ($r !== null) { |
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$r *= -1; |
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} |
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} else { |
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$r = null; |
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} |
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return $r; |
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} |
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} |
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nelson6e65 /
php_nml
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