--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/native/sun/java2d/loops/ParallelogramUtils.h	Tue Dec 14 13:25:29 2010 -0800
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#ifndef ParallelogramUtils_h_Included
+#define ParallelogramUtils_h_Included
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define PGRAM_MIN_MAX(bmin, bmax, v0, dv1, dv2, AA) \
+    do { \
+        double vmin, vmax; \
+        if (dv1 < 0) { \
+            vmin = v0+dv1; \
+            vmax = v0; \
+        } else { \
+            vmin = v0; \
+            vmax = v0+dv1; \
+        } \
+        if (dv2 < 0) { \
+            vmin += dv2; \
+        } else { \
+            vmax += dv2; \
+        } \
+        if (AA) { \
+            bmin = (jint) floor(vmin); \
+            bmax = (jint) ceil(vmax); \
+        } else { \
+            bmin = (jint) floor(vmin + 0.5); \
+            bmax = (jint) floor(vmax + 0.5); \
+        } \
+    } while(0)
+
+#define PGRAM_INIT_X(starty, x, y, slope) \
+    (DblToLong((x) + (slope) * ((starty)+0.5 - (y))) + LongOneHalf - 1)
+
+/*
+ * Sort parallelogram by y values, ensure that each delta vector
+ * has a non-negative y delta.
+ */
+#define SORT_PGRAM(x0, y0, dx1, dy1, dx2, dy2, OTHER_SWAP_CODE) \
+    do { \
+        if (dy1 < 0) { \
+            x0 += dx1;  y0 += dy1; \
+            dx1 = -dx1; dy1 = -dy1; \
+        } \
+        if (dy2 < 0) { \
+            x0 += dx2;  y0 += dy2; \
+            dx2 = -dx2; dy2 = -dy2; \
+        } \
+        /* Sort delta vectors so dxy1 is left of dxy2. */ \
+        if (dx1 * dy2 > dx2 * dy1) { \
+            double v; \
+            v = dx1; dx1 = dx2; dx2 = v; \
+            v = dy1; dy1 = dy2; dy2 = v; \
+            OTHER_SWAP_CODE \
+        } \
+    } while(0)
+
+#endif /* ParallelogramUtils_h_Included */