uPDF: move libjbig2dec and libopenjpeg to sdk/sources

git-svn-id: svn://kolibrios.org@8619 a494cfbc-eb01-0410-851d-a64ba20cac60

contrib/sdk/sources/libjbig2dec/memcmp.c

@@ -0,0 +1,49 @@
+/*
+    jbig2dec
+
+    Copyright (C) 2001-2005 Artifex Software, Inc.
+
+    This software is distributed under license and may not
+    be copied, modified or distributed except as expressly
+    authorized under the terms of the license contained in
+    the file LICENSE in this distribution.
+
+    For further licensing information refer to http://artifex.com/ or
+    contact Artifex Software, Inc., 7 Mt. Lassen Drive - Suite A-134,
+    San Rafael, CA  94903, U.S.A., +1(415)492-9861.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stddef.h>
+
+/* replacement for broken memcmp() */
+
+/*
+ * compares two byte strings 'a' and 'b', both assumed to be 'len' bytes long
+ * returns zero if the two strings are identical, otherwise returns -1 or 1
+ * depending on the relative magnitude of the first differing elements,
+ * considered as unsigned chars
+ */
+
+int memcmp(const void *b1, const void *b2, size_t len)
+{
+	unsigned char *a, *b;
+	size_t i;
+
+	a = (unsigned char *)b1;
+	b = (unsigned char *)b2;
+	for(i = 0; i < len; i++) {
+		if (*a != *b) {
+			 /* strings differ */
+			return (*a < *b) ? -1 : 1;
+		}
+		a++;
+		b++;
+	}
+
+	/* strings match */
+	return 0;
+}