+/* Copyright (C) 1991 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#ifndef _GNU_TYPES_H
+
+#define _GNU_TYPES_H 1
+
+
+/* Convenience types. */
+typedef unsigned char __u_char;
+typedef unsigned short __u_short;
+typedef unsigned int __u_int;
+typedef unsigned long __u_long;
+typedef struct { long val[2]; } __quad;
+typedef struct { __u_long val[2]; } __u_quad;
+
+typedef short int __dev_t; /* Type of device numbers. */
+typedef unsigned short int __gid_t; /* Type of group identifications. */
+typedef unsigned long int __ino_t; /* Type of file serial numbers. */
+typedef unsigned short int __mode_t; /* Type of file attribute bitmasks. */
+typedef unsigned short int __nlink_t; /* Type of file link counts. */
+typedef long int __off_t; /* Type of file sizes and offsets. */
+typedef int __pid_t; /* Type of process identifications. */
+typedef unsigned short int __uid_t; /* Type of user identifications. */
+typedef int __ssize_t; /* Type of a byte count, or error. */
+
+
+/* Everythin' else. */
+typedef long int __daddr_t; /* The type of a disk address. */
+typedef char *__caddr_t;
+typedef long int __time_t;
+typedef long int __swblk_t; /* Type of a swap block maybe? */
+
+\f
+
+/* fd_set for select. */
+
+/* Number of descriptors that can fit in an `fd_set'. */
+#define __FD_SETSIZE 256
+
+/* It's easier to assume 8-bit bytes than to get CHAR_BIT. */
+#define __NFDBITS (sizeof(unsigned long int) * 8)
+#define __FDELT(d) ((d) / __NFDBITS)
+#define __FDMASK(d) (1 << ((d) % __NFDBITS))
+
+typedef struct
+ {
+ unsigned long int __bits[(__FD_SETSIZE + (__NFDBITS - 1)) / __NFDBITS];
+ } __fd_set;
+
+/* This line MUST be split! Otherwise m4 will not change it. */
+#define __FD_ZERO(set) \
+ ((void) memset((PTR) (set), 0, sizeof(fd_set)))
+#define __FD_SET(d, set) ((set)->__bits[__FDELT(d)] |= __FDMASK(d))
+#define __FD_CLR(d, set) ((set)->__bits[__FDELT(d)] &= ~__FDMASK(d))
+#define __FD_ISSET(d, set) ((set)->__bits[__FDELT(d)] & __FDMASK(d))
+
+
+#endif /* gnu/types.h */