bp_get_user_has_avatar( int $user_id )

function bp_get_user_has_avatar( $user_id = 0 ) {

	if ( empty( $user_id ) )
		$user_id = bp_displayed_user_id();

	$retval = false;
	if ( bp_core_fetch_avatar( array( 'item_id' => $user_id, 'no_grav' => true, 'html' => false, 'type' => 'full' ) ) != bp_core_avatar_default( 'local' ) )
		$retval = true;

	/**
	 * Filters whether or not a user has an uploaded avatar.
	 *
	 * @since BuddyPress 1.6.0
	 *
	 * @param bool $retval  Whether or not a user has an uploaded avatar.
	 * @param int  $user_id ID of the user being checked.
	 */
	return (bool) apply_filters( 'bp_get_user_has_avatar', $retval, $user_id );
}