X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fdata%2Fvalue.h;h=4554a36617eb589153dc7244f19b3edf74c0bbd7;hb=9a04fda196e392d456f034e1fc2ad744a20d22b4;hp=e3e3f0de4ce9fab2267f535cd919bfdbdc73ba1f;hpb=b5f633cb2139ad17ce66cb4433b3a96276ccb1a9;p=pspp-builds.git

diff --git a/src/data/value.h b/src/data/value.h
index e3e3f0de..4554a366 100644
--- a/src/data/value.h
+++ b/src/data/value.h
@@ -1,42 +1,32 @@
-/* PSPP - computes sample statistics.
-   Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
+/* PSPP - a program for statistical analysis.
+   Copyright (C) 1997-9, 2000, 2007 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 2 of the
-   License, or (at your option) any later version.
+   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.
+   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, 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/>. */
 
-#if !value_h
-#define value_h 1
+#ifndef DATA_VALUE_H
+#define DATA_VALUE_H 1
 
-#include <float.h>
 #include <libpspp/misc.h>
+#include <stdbool.h>
+#include <stddef.h>
 #include "minmax.h"
-#include <config.h>
-
-/* Values. */
 
 /* "Short" strings, which are generally those no more than 8
    characters wide, can participate in more operations than
    longer strings. */
 #define MAX_SHORT_STRING (MAX (ROUND_UP (SIZEOF_DOUBLE, 2), 8))
 #define MIN_LONG_STRING (MAX_SHORT_STRING + 1)
-#define MAX_STRING 32767
-
-/* Special values. */
-#define SYSMIS (-DBL_MAX)
-#define LOWEST second_lowest_value
-#define HIGHEST DBL_MAX
 
 /* A numeric or short string value.
    Multiple consecutive values represent a long string. */
@@ -47,10 +37,27 @@ union value
   };
 
 union value *value_dup (const union value *, int width);
+union value *value_create (int width);
+
 int compare_values (const union value *, const union value *, int width);
-unsigned hash_value (const union value  *, int width);
+unsigned hash_value (const union value *, int width);
 
+int compare_ptr_values (const union value **, const union value **, int width);
+unsigned hash_ptr_value (const union value **, int width);
+
+
+static inline size_t value_cnt_from_width (int width);
 void value_copy (union value *, const union value *, int width);
 void value_set_missing (union value *, int width);
-
-#endif /* !value.h */
+bool value_is_resizable (const union value *, int old_width, int new_width);
+void value_resize (union value *, int old_width, int new_width);
+
+/* Number of "union value"s required for a variable of the given
+   WIDTH. */
+static inline size_t
+value_cnt_from_width (int width)
+{
+  return width == 0 ? 1 : DIV_RND_UP (width, MAX_SHORT_STRING);
+}
+
+#endif /* data/value.h */