+#define L_tmpnam 1024 /* XXX must be == PATH_MAX */
+#define TMP_MAX 308915776
+
+#ifndef SEEK_SET
+#define SEEK_SET 0 /* set file offset to offset */
+#endif
+#ifndef SEEK_CUR
+#define SEEK_CUR 1 /* set file offset to current plus offset */
+#endif
+#ifndef SEEK_END
+#define SEEK_END 2 /* set file offset to EOF plus offset */
+#endif
+
+#define stdin (&__sF[0])
+#define stdout (&__sF[1])
+#define stderr (&__sF[2])
+
+/*
+ * Functions defined in ANSI C standard.
+ */
+__BEGIN_DECLS
+void clearerr __P((FILE *));
+int fclose __P((FILE *));
+int feof __P((FILE *));
+int ferror __P((FILE *));
+int fflush __P((FILE *));
+int fgetc __P((FILE *));
+int fgetpos __P((FILE *, fpos_t *));
+char *fgets __P((char *, size_t, FILE *));
+FILE *fopen __P((const char *, const char *));
+int fprintf __P((FILE *, const char *, ...));
+int fputc __P((int, FILE *));
+int fputs __P((const char *, FILE *));
+int fread __P((void *, size_t, size_t, FILE *));
+FILE *freopen __P((const char *, const char *, FILE *));
+int fscanf __P((FILE *, const char *, ...));
+int fseek __P((FILE *, long, int));
+int fsetpos __P((FILE *, const fpos_t *));
+long ftell __P((const FILE *));
+int fwrite __P((const void *, size_t, size_t, FILE *));
+int getc __P((FILE *));
+int getchar __P((void));
+char *gets __P((char *));
+#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
+extern int sys_nerr; /* perror(3) external variables */
+extern char *sys_errlist[];
+#endif
+void perror __P((const char *));
+int printf __P((const char *, ...));
+int putc __P((int, FILE *));
+int putchar __P((int));
+int puts __P((const char *));
+int remove __P((const char *));
+int rename __P((const char *, const char *));
+void rewind __P((FILE *));
+int scanf __P((const char *, ...));
+void setbuf __P((FILE *, char *));
+int setvbuf __P((FILE *, char *, int, size_t));
+int sprintf __P((char *, const char *, ...));
+int sscanf __P((char *, const char *, ...));
+FILE *tmpfile __P((void));
+char *tmpnam __P((char *));
+int ungetc __P((int, FILE *));
+int vfprintf __P((FILE *, const char *, _VA_LIST_));
+int vprintf __P((const char *, _VA_LIST_));
+int vsprintf __P((char *, const char *, _VA_LIST_));
+__END_DECLS
+
+/*
+ * Functions defined in POSIX 1003.1.
+ */
+#ifndef _ANSI_SOURCE
+#define L_cuserid 9 /* size for cuserid(); UT_NAMESIZE + 1 */
+#define L_ctermid 1024 /* size for ctermid(); PATH_MAX */
+
+__BEGIN_DECLS
+char *ctermid __P((char *));
+FILE *fdopen __P((int, const char *));
+int fileno __P((FILE *));
+__END_DECLS
+#endif /* not ANSI */
+
+/*
+ * Routines that are purely local.
+ */
+#if !defined (_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
+__BEGIN_DECLS
+char *fgetline __P((FILE *, size_t *));
+int fpurge __P((FILE *));
+int getw __P((FILE *));
+int pclose __P((FILE *));
+FILE *popen __P((const char *, const char *));
+int putw __P((int, FILE *));
+void setbuffer __P((FILE *, char *, int));
+int setlinebuf __P((FILE *));
+char *tempnam __P((const char *, const char *));
+int snprintf __P((char *, size_t, const char *, ...));
+int vsnprintf __P((char *, size_t, const char *, _VA_LIST_));
+int vscanf __P((const char *, _VA_LIST_));
+int vsscanf __P((const char *, const char *, _VA_LIST_));
+__END_DECLS
+
+/*
+ * This is a #define because the function is used internally and
+ * (unlike vfscanf) the name __svfscanf is guaranteed not to collide
+ * with a user function when _ANSI_SOURCE or _POSIX_SOURCE is defined.
+ */
+#define vfscanf __svfscanf
+
+/*
+ * Stdio function-access interface.
+ */
+__BEGIN_DECLS
+FILE *funopen __P((const void *,
+ int (*)(void *, char *, int),
+ int (*)(void *, const char *, int),
+ fpos_t (*)(void *, fpos_t, int),
+ int (*)(void *)));
+__END_DECLS
+#define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0)
+#define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0)
+#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
+
+/*
+ * Functions internal to the implementation.
+ */
+__BEGIN_DECLS
+int __srget __P((FILE *));
+int __svfscanf __P((FILE *, const char *, _VA_LIST_));
+int __swbuf __P((int, FILE *));
+__END_DECLS
+
+/*
+ * The __sfoo macros are here so that we can
+ * define function versions in the C library.
+ */
+#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
+#if defined(__GNUC__) && defined(__STDC__)
+static inline int __sputc(int _c, FILE *_p) {
+ if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
+ return (*_p->_p++ = _c);
+ else
+ return (__swbuf(_c, _p));
+}
+#else
+/*
+ * This has been tuned to generate reasonable code on the vax using pcc.
+ */
+#define __sputc(c, p) \
+ (--(p)->_w < 0 ? \
+ (p)->_w >= (p)->_lbfsize ? \
+ (*(p)->_p = (c)), *(p)->_p != '\n' ? \
+ (int)*(p)->_p++ : \
+ __swbuf('\n', p) : \
+ __swbuf((int)(c), p) : \
+ (*(p)->_p = (c), (int)*(p)->_p++))
+#endif
+
+#define __sfeof(p) (((p)->_flags & __SEOF) != 0)
+#define __sferror(p) (((p)->_flags & __SERR) != 0)
+#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF)))
+#define __sfileno(p) ((p)->_file)
+
+#define feof(p) __sfeof(p)
+#define ferror(p) __sferror(p)
+#define clearerr(p) __sclearerr(p)
+
+#ifndef _ANSI_SOURCE
+#define fileno(p) __sfileno(p)
+#endif
+
+#ifndef lint
+#define getc(fp) __sgetc(fp)
+#define putc(x, fp) __sputc(x, fp)
+#endif /* lint */
+
+#define getchar() getc(stdin)
+#define putchar(x) putc(x, stdout)
+#endif /* _STDIO_H_ */