-#define RET_OK 0 /* command completed sucessfully */
-#define RET_FAIL 1 /* command completed unsucessfully [?] */
-#define RET_SYN 2 /* syntax error in command */
-#define RET_SYS 3 /* system error (missing file, etc) */
-
-double dmax(double n1, double n2);
-double dmin(double n1, double n2);
-
-extern s_char *numstr(s_char buf[], int n);
-extern s_char *esplur(int n);
-extern s_char *splur(int n);
-extern s_char *iesplur(int n);
-extern s_char *plur(int n, s_char *no, s_char *yes);
-extern s_char *getstarg(s_char *input, s_char *prompt, s_char buf[]);
-extern s_char *getstring(s_char *prompt, s_char buf[]);
-extern s_char *prbuf(s_char *format, ...)
- ATTRIBUTE((format (printf, 1, 2)));
+#define RET_OK 0 /* command completed sucessfully */
+#define RET_FAIL 1 /* command completed unsucessfully [?] */
+#define RET_SYN 2 /* syntax error in command */