WordPress at a glance
function is not described

default_topic_count_scale() WP 2.9.0

Default topic count scaling for tag links.

No Hooks.

Return

Int. Scaled count.

Usage

default_topic_count_scale( $count );
$count(int) (required)
Number of posts with that tag.

Code of default topic count scale: wp-includes/category-template.php VER 5.0.3

<?php
function default_topic_count_scale( $count ) {
	return round(log10($count + 1) * 100);
}