diff --git a/wp-includes/wp-db.php b/wp-includes/wp-db.php
index 9d106b7b2c..a02496651a 100644
--- a/wp-includes/wp-db.php
+++ b/wp-includes/wp-db.php
@@ -843,13 +843,14 @@ class wpdb {
 	 *
 	 * The following directives can be used in the query format string:
 	 *   %d (integer)
+	 *   %f (float)
 	 *   %s (string)
 	 *   %% (literal percentage sign - no argument needed)
 	 *
-	 * Both %d and %s are to be left unquoted in the query string and they need an argument passed for them.
+	 * All of %d, %f, and %s are to be left unquoted in the query string and they need an argument passed for them.
 	 * Literals (%) as parts of the query must be properly written as %%.
 	 *
-	 * This function only supports a small subset of the sprintf syntax; it only supports %d (integer), %s (string).
+	 * This function only supports a small subset of the sprintf syntax; it only supports %d (integer), %f (float), and %s (string).
 	 * Does not support sign, padding, alignment, width or precision specifiers.
 	 * Does not support argument numbering/swapping.
 	 *
@@ -1132,7 +1133,7 @@ class wpdb {
 	 * @param string $table table name
 	 * @param array $data Data to insert (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped).
 	 * @param array|string $format Optional. An array of formats to be mapped to each of the value in $data. If string, that format will be used for all of the values in $data.
-	 * 	A format is one of '%d', '%s' (integer, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
+	 * 	A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
 	 * @return int|false The number of rows inserted, or false on error.
 	 */
 	function insert( $table, $data, $format = null ) {
@@ -1155,7 +1156,7 @@ class wpdb {
 	 * @param string $table table name
 	 * @param array $data Data to insert (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped).
 	 * @param array|string $format Optional. An array of formats to be mapped to each of the value in $data. If string, that format will be used for all of the values in $data.
-	 * 	A format is one of '%d', '%s' (integer, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
+	 * 	A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
 	 * @return int|false The number of rows affected, or false on error.
 	 */
 	function replace( $table, $data, $format = null ) {
@@ -1176,7 +1177,7 @@ class wpdb {
 	 * @param string $table table name
 	 * @param array $data Data to insert (in column => value pairs).  Both $data columns and $data values should be "raw" (neither should be SQL escaped).
 	 * @param array|string $format Optional. An array of formats to be mapped to each of the value in $data. If string, that format will be used for all of the values in $data.
-	 * 	A format is one of '%d', '%s' (integer, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
+	 * 	A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
 	 * @return int|false The number of rows affected, or false on error.
 	 */
 	function _insert_replace_helper( $table, $data, $format = null, $type = 'INSERT' ) {
@@ -1215,8 +1216,8 @@ class wpdb {
 	 * @param array $data Data to update (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped).
 	 * @param array $where A named array of WHERE clauses (in column => value pairs). Multiple clauses will be joined with ANDs. Both $where columns and $where values should be "raw".
 	 * @param array|string $format Optional. An array of formats to be mapped to each of the values in $data. If string, that format will be used for all of the values in $data.
-	 * 	A format is one of '%d', '%s' (integer, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
-	 * @param array|string $format_where Optional. An array of formats to be mapped to each of the values in $where. If string, that format will be used for all of the items in $where.  A format is one of '%d', '%s' (integer, string).  If omitted, all values in $where will be treated as strings.
+	 * 	A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
+	 * @param array|string $format_where Optional. An array of formats to be mapped to each of the values in $where. If string, that format will be used for all of the items in $where.  A format is one of '%d', '%f', '%s' (integer, float, string).  If omitted, all values in $where will be treated as strings.
 	 * @return int|false The number of rows updated, or false on error.
 	 */
 	function update( $table, $data, $where, $format = null, $where_format = null ) {