WordPress at a glance
function is not described

wp_cache_microtime_diff() WPSCache 1.0

No Hooks.

Return

Null. Nothing.

Usage

wp_cache_microtime_diff( $a, $b );

Code of wp_cache_microtime_diff() WPSCache 1.7.1

<?php
function wp_cache_microtime_diff($a, $b) {
	list($a_dec, $a_sec) = explode(' ', $a);
	list($b_dec, $b_sec) = explode(' ', $b);
	return (float)$b_sec - (float)$a_sec + (float)$b_dec - (float)$a_dec;
}