31 lines
730 B
PHP
31 lines
730 B
PHP
<?php
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// XNumber.php
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// Created: 2023-09-15
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// Updated: 2023-11-09
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namespace Index;
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use InvalidArgumentException;
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/**
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* Provides various helper methods for numbers.
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*/
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final class XNumber {
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public static function weighted(float $num1, float $num2, float $weight): float {
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$weight = min(1, max(0, $weight));
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return ($num1 * $weight) + ($num2 * (1 - $weight));
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}
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public static function almostEquals(float $value1, float $value2): bool {
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return abs($value1 - $value2) <= PHP_FLOAT_EPSILON;
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}
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public static function easeInQuad(float $n): float {
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return $n * $n;
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}
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public static function easeOutQuad(float $n): float {
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return 1 - (1 - $n) * (1 - $n);
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}
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}
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