+struct lconv * localeconv( void ) _PDCLIB_nothrow;
+
+#if _PDCLIB_POSIX_MIN(2008)
+
+/* POSIX locale type */
+typedef _PDCLIB_locale_t locale_t;
+
+/* Global locale */
+extern struct _PDCLIB_locale _PDCLIB_global_locale;
+#define LC_GLOBAL_LOCALE (&_PDCLIB_global_locale)
+
+/* Set the thread locale to newlocale
+ *
+ * If newlocale is (locale_t)0, then doesn't change the locale and just returns
+ * the existing locale.
+ *
+ * If newlocale is LC_GLOBAL_LOCALE, resets the thread's locale to use the
+ * global locale.
+ *
+ * Returns the previous thread locale. If the thread had no previous locale,
+ * returns the global locale.
+ */
+locale_t uselocale(locale_t newlocale);
+
+/* Returns a copy of loc */
+locale_t duplocale(locale_t loc);
+
+/* Frees the passed locale object */
+void freelocale(locale_t loc);
+
+#endif