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+/*
+ * Copyright (c) 2001-2002, David Janssens
+ * 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.
+ */
+
+/* <summary> */
+/* Get the minimum of two integers. */
+/* </summary> */
+int int_min(int a, int b)
+{
+	return a < b ? a : b;
+}
+
+/* <summary> */
+/* Get the maximum of two integers. */
+/* </summary> */
+int int_max(int a, int b)
+{
+	return a > b ? a : b;
+}
+
+/* <summary> */
+/* Clamp an integer inside an interval. */
+/* </summary> */
+int int_clamp(int a, int min, int max)
+{
+	if (a < min)
+		return min;
+	if (a > max)
+		return max;
+	return a;
+}
+
+/* <summary> */
+/* Get absolute value of integer. */
+/* </summary> */
+int int_abs(int a)
+{
+	return a < 0 ? -a : a;
+}
+
+/* <summary> */
+/* Divide an integer and round upwards. */
+/* </summary> */
+int int_ceildiv(int a, int b)
+{
+	return (a + b - 1) / b;
+}
+
+/* <summary> */
+/* Divide an integer by a power of 2 and round upwards. */
+/* </summary> */
+int int_ceildivpow2(int a, int b)
+{
+	return (a + (1 << b) - 1) >> b;
+}
+
+/* <summary> */
+/* Divide an integer by a power of 2 and round downwards. */
+/* </summary> */
+int int_floordivpow2(int a, int b)
+{
+	return a >> b;
+}
+
+/* <summary> */
+/* Get logarithm of an integer and round downwards. */
+/* </summary> */
+int int_floorlog2(int a)
+{
+	int l;
+	for (l = 0; a > 1; l++) {
+		a >>= 1;
+	}
+	return l;
+}