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diff --git a/posix/posix2_lim.h b/posix/posix2_lim.h
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+/* 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	_POSIX2_LIMITS_H
+
+#define	_POSIX2_LIMITS_H	1
+
+
+/* The maximum `ibase' and `obase' values allowed by the `bc' utility.  */
+#define	_POSIX2_BC_BASE_MAX	99
+
+/* The maximum number of elements allowed in an array by the `bc' utility.  */
+#define	_POSIX2_BC_DIM_MAX	2048
+
+/* The maximum `scale' value allowed by the `bc' utility.  */
+#define	_POSIX2_BC_SCALE_MAX	99
+
+/* The maximum length of a string constant accepted by the `bc' utility.  */
+#define	_POSIX2_BC_STRING_MAX	1000
+
+/* The maximum number of weights that can be assigned to an entry of
+   the LC_COLLATE category `order' keyword in a locale definition.  */
+#define	_POSIX2_EQUIV_CLASS_MAX	2
+
+/* The maximum number of expressions that can be nested
+   within parentheses by the `expr' utility.  */
+#define	_POSIX2_EXPR_NEST_MAX	32
+
+/* The maximum length, in bytes, of an input line.  */
+#define	_POSIX2_LINE_MAX	2048
+
+/* The maximum number of repeated occurrences of a regular expression
+   permitted when using the interval notation `\{M,N\}'.  */
+#define	_POSIX2_RE_DUP_MAX	255
+
+
+/* These values are implementation-specific,
+   and may vary within the implementation.
+   Their precise values can be obtained from sysconf.  */
+
+#ifndef	BC_BASE_MAX
+#define	BC_BASE_MAX	_POSIX2_BC_BASE_MAX
+#endif
+#ifndef	BC_DIM_MAX
+#define	BC_DIM_MAX	_POSIX2_BC_DIM_MAX
+#endif
+#ifndef	BC_SCALE_MAX
+#define	BC_SCALE_MAX	_POSIX2_BC_SCALE_MAX
+#endif
+#ifndef	BC_STRING_MAX
+#define	BC_STRING_MAX	_POSIX2_BC_STRING_MAX
+#endif
+#ifndef	EQUIV_CLASS_MAX
+#define	EQUIV_CLASS_MAX	_POSIX2_EQUIV_CLASS_MAX
+#endif
+#ifndef	EXPR_NEST_MAX
+#define	EXPR_NEST_MAX	_POSIX2_EXPR_NEST_MAX
+#endif
+#ifndef	LINE_MAX
+#define	LINE_MAX	_POSIX2_LINE_MAX
+#endif
+#ifndef	RE_DUP_MAX
+#define	RE_DUP_MAX	_POSIX2_RE_DUP_MAX
+#endif
+
+
+#endif	/* posix2_limits.h */