ENH: Adding the OpenJPEG (j2k) lib to gdcm

[gdcm.git] / src / gdcmopenjpeg / libopenjpeg / int.h

diff --git a/src/gdcmopenjpeg/libopenjpeg/int.h b/src/gdcmopenjpeg/libopenjpeg/int.h
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+++ b/src/gdcmopenjpeg/libopenjpeg/int.h
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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.
+ */
+
+#ifndef __INT_H
+#define __INT_H
+
+/*
+ * Get the minimum of two integers.
+ *
+ * returns a if a < b else b
+ */
+int int_min(int a, int b);
+
+/*
+ * Get the maximum of two integers.
+ *
+ * returns a if a > b else b
+ */
+int int_max(int a, int b);
+
+/*
+ * Clamp an integer inside an interval.
+ *
+ * return a if (min < a < max)
+ * return max if (a > max)
+ * return min if (a < min) 
+ */
+int int_clamp(int a, int min, int max);
+
+/*
+ * Get absolute value of integer.
+ */
+int int_abs(int a);
+
+/*
+ * Divide an integer and round upwards.
+ *
+ * a divided by b
+ */
+int int_ceildiv(int a, int b);
+
+/*
+ * Divide an integer by a power of 2 and round upwards.
+ *
+ * a divided by 2^b
+ */
+int int_ceildivpow2(int a, int b);
+
+/*
+ * Divide an integer by a power of 2 and round downwards.
+ *
+ * a divided by 2^b
+ */
+int int_floordivpow2(int a, int b);
+
+/*
+ * Get logarithm of an integer and round downwards.
+ *
+ * log2(a)
+ */
+int int_floorlog2(int a);
+
+#endif