1 files changed, 84 insertions, 0 deletions
diff --git a/include/typemax.h b/include/typemax.h
new file mode 100644
index 0000000..32e7a89
--- /dev/null
+++ b/include/typemax.h
@@ -0,0 +1,84 @@
+/* typemax.h -- encapsulate max values for long, long long, etc. */
+
+/* Copyright (C) 2001 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Bash 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Bash.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+ * NOTE:  This should be included after config.h, limits.h, stdint.h, and
+ *	  inttypes.h
+ */
+
+#ifndef _SH_TYPEMAX_H
+#define _SH_TYPEMAX_H
+
+#ifndef CHAR_BIT
+#  define CHAR_BIT 8
+#endif
+
+/* Nonzero if the integer type T is signed.  */
+#ifndef TYPE_SIGNED
+#  define TYPE_SIGNED(t)	(! ((t) 0 < (t) -1))
+#endif
+
+#ifndef TYPE_MINIMUM
+#  define TYPE_MINIMUM(t) ((t) (TYPE_SIGNED (t) \
+				? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) \
+				: (t) 0))
+#endif
+
+#ifndef TYPE_MAXIMUM
+#  define TYPE_MAXIMUM(t) ((t) (~ (t) 0 - TYPE_MINIMUM (t)))
+#endif
+
+#ifdef HAVE_LONG_LONG
+#  ifndef LLONG_MAX
+#    define LLONG_MAX   TYPE_MAXIMUM(long long int)
+#    define LLONG_MIN	TYPE_MINIMUM(long long int)
+#  endif
+#  ifndef ULLONG_MAX
+#    define ULLONG_MAX  TYPE_MAXIMUM(unsigned long long int)
+#  endif
+#endif
+
+#ifndef ULONG_MAX
+#  define ULONG_MAX	((unsigned long) ~(unsigned long) 0)
+#endif
+
+#ifndef LONG_MAX
+#  define LONG_MAX	((long int) (ULONG_MAX >> 1))
+#  define LONG_MIN	((long int) (-LONG_MAX - 1L))
+#endif
+
+#ifndef INT_MAX		/* ouch */
+#  define INT_MAX	TYPE_MAXIMUM(int)
+#  define INT_MIN	TYPE_MINIMUM(int)
+#  define UINT_MAX	((unsigned int) ~(unsigned int)0)
+#endif
+
+/* workaround for gcc bug in versions < 2.7 */
+#if defined (HAVE_LONG_LONG) && __GNUC__ == 2 && __GNUC_MINOR__ < 7
+static const unsigned long long int maxquad = ULLONG_MAX;
+#  undef ULLONG_MAX
+#  define ULLONG_MAX maxquad
+#endif
+
+#ifndef SSIZE_MAX
+#  define SSIZE_MAX	32767		/* POSIX minimum max */
+#endif
+
+#endif /* _SH_TYPEMAX_H */