X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fadt%2Futil.h;h=105ceafcba385c732350c7aefdf7c1fba264ddba;hb=c795dad1d14f1b54dd32a6107ac26a22c089c957;hp=d38254029f2f8487fd267c507f0d07e4047d9ae5;hpb=a25fd62c30b2f4562dc598ab74d5200a99d248a7;p=libfirm

diff --git a/ir/adt/util.h b/ir/adt/util.h
index d38254029..105ceafcb 100644
--- a/ir/adt/util.h
+++ b/ir/adt/util.h
@@ -1,25 +1,32 @@
-/**
- * @file   util.h
- * @date   31.05.2005
- * @author Sebastian Hack
+/*
+ * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
+ *
+ * This file is part of libFirm.
+ *
+ * This file may be distributed and/or modified under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation and appearing in the file LICENSE.GPL included in the
+ * packaging of this file.
  *
- * Some utility macros.
+ * Licensees holding valid libFirm Professional Edition licenses may use
+ * this file in accordance with the libFirm Commercial License.
+ * Agreement provided with the Software.
  *
- * Copyright (C) 2005 Universitaet Karlsruhe
- * Released under the GPL
+ * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+ * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
  */
 
-#ifndef _UTIL_H
-#define _UTIL_H
-
 /**
- * Get the offset of a member of a struct.
- * @param type   The type of the struct member is in.
- * @param member The name of the member.
- * @return       The offset of member in type in bytes.
+ * @file
+ * @date   31.05.2005
+ * @author Sebastian Hack
+ * @brief  Miscelaneous utility macros.
  */
-#define offset_of(type, member) \
-  ((char *) &(((type *) 0)->member) - (char *) 0)
+#ifndef FIRM_ADT_UTIL_H
+#define FIRM_ADT_UTIL_H
+
+#include <stddef.h>
 
 /**
  * Make pointer to the struct from a pointer to a member of that struct.
@@ -28,15 +35,38 @@
  * @param member  The name of the member.
  * @return        A pointer to the struct member is in.
  */
-#define container_of(ptr, type, member) \
-	((type *) ((char *) (ptr) - offset_of(type, member)))
+#define firm_container_of(ptr, type, member) \
+	((type *) ((char *) (ptr) - offsetof(type, member)))
+
+/**
+ * Returns size of a static array. Warning: This returns invalid values for
+ * dynamically allocated arrays.
+ *
+ * @param a    static array
+ */
+#define ARRAY_SIZE(a) (sizeof(a)/sizeof((a)[0]))
+
+#undef MIN
+#undef MAX
+#define MAX(x, y) ((x) > (y) ? (x) : (y))
+#define MIN(x, y) ((x) < (y) ? (x) : (y))
+
+/**
+ * Three valued compare as demanded by e.g. qsort(3)
+ * @param c A number.
+ * @param d Another number.
+ * @return 0 if c == d, -1 if c < d, 1 if c > d.
+ */
+#define QSORT_CMP(c, d) (((c) > (d)) - ((c) < (d)))
+
+/**
+ * convert an integer into pointer
+ */
+#define INT_TO_PTR(v)   ((void *)((char *)0 + (v)))
 
 /**
- * Get the number of elements of a static array.
- * @param arr The static array.
- * @return The number of elements in that array.
+ * convert a pointer into an integer
  */
-#define array_size(arr) \
-  (sizeof(arr) / sizeof((arr)[0]))
+#define PTR_TO_INT(v)   (((char *)(v) - (char *)0))
 
-#endif /* _UTIL_H */
+#endif