-/*\r
- * Copyright (c) 2001-2003, David Janssens\r
- * Copyright (c) 2002-2003, Yannick Verschueren\r
- * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe\r
- * Copyright (c) 2005, Hervé Drolon, FreeImage Team\r
- * Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium\r
- * All rights reserved.\r
- *\r
- * Redistribution and use in source and binary forms, with or without\r
- * modification, are permitted provided that the following conditions\r
- * are met:\r
- * 1. Redistributions of source code must retain the above copyright\r
- * notice, this list of conditions and the following disclaimer.\r
- * 2. Redistributions in binary form must reproduce the above copyright\r
- * notice, this list of conditions and the following disclaimer in the\r
- * documentation and/or other materials provided with the distribution.\r
- *\r
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'\r
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE\r
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\r
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\r
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS\r
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN\r
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)\r
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\r
- * POSSIBILITY OF SUCH DAMAGE.\r
- */\r
-#ifndef __INT_H\r
-#define __INT_H\r
-/**\r
-@file int.h\r
-@brief Implementation of operations on integers (INT)\r
-\r
-The functions in INT.C have for goal to realize operations on integers.\r
-*/\r
-\r
-/** @defgroup INT INT - Implementation of operations on integers */\r
-/*@{*/\r
-\r
-/** @name Exported functions (see also openjpeg.h) */\r
-/*@{*/\r
-/* ----------------------------------------------------------------------- */\r
-/**\r
-Get the minimum of two integers\r
-@return Returns a if a < b else b\r
-*/\r
-int int_min(int a, int b);\r
-/**\r
-Get the maximum of two integers\r
-@return Returns a if a > b else b\r
-*/\r
-int int_max(int a, int b);\r
-/**\r
-Clamp an integer inside an interval\r
-@return\r
-<ul>\r
-<li>Returns a if (min < a < max)\r
-<li>Returns max if (a > max)\r
-<li>Returns min if (a < min) \r
-</ul>\r
-*/\r
-int int_clamp(int a, int min, int max);\r
-/**\r
-@return Get absolute value of integer\r
-*/\r
-int int_abs(int a);\r
-/**\r
-Divide an integer and round upwards\r
-@return Returns a divided by b\r
-*/\r
-int int_ceildiv(int a, int b);\r
-/**\r
-Divide an integer by a power of 2 and round upwards\r
-@return Returns a divided by 2^b\r
-*/\r
-int int_ceildivpow2(int a, int b);\r
-/**\r
-Divide an integer by a power of 2 and round downwards\r
-@return Returns a divided by 2^b\r
-*/\r
-int int_floordivpow2(int a, int b);\r
-/**\r
-Get logarithm of an integer and round downwards\r
-@return Returns log2(a)\r
-*/\r
-int int_floorlog2(int a);\r
-\r
-/* ----------------------------------------------------------------------- */\r
-/*@}*/\r
-\r
-/*@}*/\r
-\r
-#endif\r
+/*
+ * Copyright (c) 2001-2003, David Janssens
+ * Copyright (c) 2002-2003, Yannick Verschueren
+ * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
+ * Copyright (c) 2005, Hervé Drolon, FreeImage Team
+ * Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __INT_H
+#define __INT_H
+/**
+@file int.h
+@brief Implementation of operations on integers (INT)
+
+The functions in INT.H have for goal to realize operations on integers.
+*/
+
+/** @defgroup INT INT - Implementation of operations on integers */
+/*@{*/
+
+/** @name Exported functions (see also openjpeg.h) */
+/*@{*/
+/* ----------------------------------------------------------------------- */
+/**
+Get the minimum of two integers
+@return Returns a if a < b else b
+*/
+static INLINE int int_min(int a, int b) {
+ return a < b ? a : b;
+}
+/**
+Get the maximum of two integers
+@return Returns a if a > b else b
+*/
+static INLINE int int_max(int a, int b) {
+ return (a > b) ? a : b;
+}
+/**
+Clamp an integer inside an interval
+@return
+<ul>
+<li>Returns a if (min < a < max)
+<li>Returns max if (a > max)
+<li>Returns min if (a < min)
+</ul>
+*/
+static INLINE int int_clamp(int a, int min, int max) {
+ if (a < min)
+ return min;
+ if (a > max)
+ return max;
+ return a;
+}
+/**
+@return Get absolute value of integer
+*/
+static INLINE int int_abs(int a) {
+ return a < 0 ? -a : a;
+}
+/**
+Divide an integer and round upwards
+@return Returns a divided by b
+*/
+static INLINE int int_ceildiv(int a, int b) {
+ return (a + b - 1) / b;
+}
+/**
+Divide an integer by a power of 2 and round upwards
+@return Returns a divided by 2^b
+*/
+static INLINE int int_ceildivpow2(int a, int b) {
+ return (a + (1 << b) - 1) >> b;
+}
+/**
+Divide an integer by a power of 2 and round downwards
+@return Returns a divided by 2^b
+*/
+static INLINE int int_floordivpow2(int a, int b) {
+ return a >> b;
+}
+/**
+Get logarithm of an integer and round downwards
+@return Returns log2(a)
+*/
+static INLINE int int_floorlog2(int a) {
+ int l;
+ for (l = 0; a > 1; l++) {
+ a >>= 1;
+ }
+ return l;
+}
+/* ----------------------------------------------------------------------- */
+/*@}*/
+
+/*@}*/
+
+#endif
git://git.creatis.insa-lyon.fr / gdcm.git / blobdiff