Get the author posts url link of Author Archive Page in Wordpress

CMS & WordPress
1 
function fix_meta_canonical() {
	global $paged;
	if (is_category()) {
		$catid = get_query_var('cat');

		echo '
<link rel="canonical" href="'.get_category_link($catid).'" />
<meta name="description" content="'.$meta.'" />';
		if ($paged > 1) echo '
<meta name="robots" content="noindex,follow" />';
	} else {
		echo '';
	}

if (is_tag()) {
		$tagid = get_query_var('tag_id');
		
		echo '
<link rel="canonical" href="'.get_tag_link($tagid).'" />';
		if ($paged > 1) echo '
<meta name="robots" content="noindex,follow" />';
	} else {
		echo '';
	}
}
add_action('wp_head', 'fix_meta_canonical');

functions.php

As you can see i have got the root permalink for the category and tag archives in the code. Now I want to get the archive link for authors. How can I do it?