Index: bison/src/bison/2.4.1/bison-2.4.1-src/lib/intprops.h |
=================================================================== |
--- bison/src/bison/2.4.1/bison-2.4.1-src/lib/intprops.h (revision 0) |
+++ bison/src/bison/2.4.1/bison-2.4.1-src/lib/intprops.h (revision 0) |
@@ -0,0 +1,77 @@ |
+/* intprops.h -- properties of integer types |
+ |
+ Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. |
+ |
+ This program 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. |
+ |
+ This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ |
+ |
+/* Written by Paul Eggert. */ |
+ |
+#include <limits.h> |
+ |
+/* The extra casts in the following macros work around compiler bugs, |
+ e.g., in Cray C 5.0.3.0. */ |
+ |
+/* True if the arithmetic type T is an integer type. bool counts as |
+ an integer. */ |
+#define TYPE_IS_INTEGER(t) ((t) 1.5 == 1) |
+ |
+/* True if negative values of the signed integer type T use two's |
+ complement, ones' complement, or signed magnitude representation, |
+ respectively. Much GNU code assumes two's complement, but some |
+ people like to be portable to all possible C hosts. */ |
+#define TYPE_TWOS_COMPLEMENT(t) ((t) ~ (t) 0 == (t) -1) |
+#define TYPE_ONES_COMPLEMENT(t) ((t) ~ (t) 0 == 0) |
+#define TYPE_SIGNED_MAGNITUDE(t) ((t) ~ (t) 0 < (t) -1) |
+ |
+/* True if the arithmetic type T is signed. */ |
+#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1)) |
+ |
+/* The maximum and minimum values for the integer type T. These |
+ macros have undefined behavior if T is signed and has padding bits. |
+ If this is a problem for you, please let us know how to fix it for |
+ your host. */ |
+#define TYPE_MINIMUM(t) \ |
+ ((t) (! TYPE_SIGNED (t) \ |
+ ? (t) 0 \ |
+ : TYPE_SIGNED_MAGNITUDE (t) \ |
+ ? ~ (t) 0 \ |
+ : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))) |
+#define TYPE_MAXIMUM(t) \ |
+ ((t) (! TYPE_SIGNED (t) \ |
+ ? (t) -1 \ |
+ : ~ (~ (t) 0 << (sizeof (t) * CHAR_BIT - 1)))) |
+ |
+/* Return zero if T can be determined to be an unsigned type. |
+ Otherwise, return 1. |
+ When compiling with GCC, INT_STRLEN_BOUND uses this macro to obtain a |
+ tighter bound. Otherwise, it overestimates the true bound by one byte |
+ when applied to unsigned types of size 2, 4, 16, ... bytes. |
+ The symbol signed_type_or_expr__ is private to this header file. */ |
+#if __GNUC__ >= 2 |
+# define signed_type_or_expr__(t) TYPE_SIGNED (__typeof__ (t)) |
+#else |
+# define signed_type_or_expr__(t) 1 |
+#endif |
+ |
+/* Bound on length of the string representing an integer type or expression T. |
+ Subtract 1 for the sign bit if T is signed; log10 (2.0) < 146/485; |
+ add 1 for integer division truncation; add 1 more for a minus sign |
+ if needed. */ |
+#define INT_STRLEN_BOUND(t) \ |
+ ((sizeof (t) * CHAR_BIT - signed_type_or_expr__ (t)) * 146 / 485 \ |
+ + signed_type_or_expr__ (t) + 1) |
+ |
+/* Bound on buffer size needed to represent an integer type or expression T, |
+ including the terminating null. */ |
+#define INT_BUFSIZE_BOUND(t) (INT_STRLEN_BOUND (t) + 1) |
Property changes on: bison\src\bison\2.4.1\bison-2.4.1-src\lib\intprops.h |
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Added: svn:eol-style |
+ LF |