/* Digits array used by various integer conversion functions in <stdlib.h> */
extern char _PDCLIB_digits[];
+
+/* -------------------------------------------------------------------------- */
+/* Internal data types */
+/* -------------------------------------------------------------------------- */
+
+/* Structure required by both atexit() and exit() for handling atexit functions */
+struct _PDCLIB_exitfunc_t
+{
+ struct _PDCLIB_exitfunc_t * next;
+ void (*func)( void );
+};
+
+/* Structures required by malloc(), realloc(), and free(). */
+struct _PDCLIB_headnode_t
+{
+ struct _PDCLIB_memnode_t * first;
+ struct _PDCLIB_memnode_t * last;
+};
+
+struct _PDCLIB_memnode_t
+{
+ _PDCLIB_size_t size;
+ struct _PDCLIB_memnode_t * next;
+};