ignore-value: make ignore_value more generic; deprecate ignore_ptr

[pspp] / lib / intprops.h

diff --git a/lib/intprops.h b/lib/intprops.h
index 34f971cbaad8c1a0504163d34cf766254dbf4002..511a5aa98907c5dd94edfb1b7936bbe02190f105 100644 (file)
--- a/lib/intprops.h
+++ b/lib/intprops.h
@@ -1,11 +1,11 @@
 /* intprops.h -- properties of integer types
 
-   Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+   Copyright (C) 2001-2005, 2009-2011 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   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 2, or (at your option)
-   any later version.
+   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
@@ -13,45 +13,47 @@
    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, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 /* Written by Paul Eggert.  */
 
-#include <limits.h>
+#ifndef GL_INTPROPS_H
+# define GL_INTPROPS_H
+
+# 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)
+# 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)
+# 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))
+# 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) \
+# 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) 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))))
+        ? (t) -1 \
+        : ~ (~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))))
 
 /* Return zero if T can be determined to be an unsigned type.
    Otherwise, return 1.
@@ -59,20 +61,26 @@
    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
+# 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 unsigned integer
+   value representable in B bits.  log10 (2.0) < 146/485.  The
+   smallest value of B where this bound is not tight is 2621.  */
+# define INT_BITS_STRLEN_BOUND(b) (((b) * 146 + 484) / 485)
 
 /* 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)
+   Subtract 1 for the sign bit if T is signed, and then add 1 more for
+   a minus sign if needed.  */
+# define INT_STRLEN_BOUND(t) \
+  (INT_BITS_STRLEN_BOUND (sizeof (t) * CHAR_BIT - signed_type_or_expr__ (t)) \
+   + signed_type_or_expr__ (t))
 
 /* 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)
+# define INT_BUFSIZE_BOUND(t) (INT_STRLEN_BOUND (t) + 1)
+
+#endif /* GL_INTPROPS_H */