Initial refactor of functions.php

inc/functions/math.php

@@ -0,0 +1,33 @@
+<?php // Math related functions
+
+defined('TINYBOARD') or exit;
+
+
+// Highest common factor
+function hcf($a, $b){
+	$gcd = 1;
+	if ($a>$b) {
+		$a = $a+$b;
+		$b = $a-$b;
+		$a = $a-$b;
+	}
+	if ($b == round($b / $a) * $a) {
+		$gcd=$a;
+	} else {
+		for ($i = round($a / 2); $i; $i--) {
+			if ($a == round($a / $i) * $i && $b == round($b / $i) * $i) {
+				$gcd = $i;
+				$i = false;
+			}
+		}
+	}
+	return $gcd;
+}
+
+function fraction($numerator, $denominator, $sep) {
+	$gcf = hcf($numerator, $denominator);
+	$numerator = $numerator / $gcf;
+	$denominator = $denominator / $gcf;
+
+	return "{$numerator}{$sep}{$denominator}";
+}