--- Compress-LZF/lzfP.h	2001/09/27 18:36:34	1.1
+++ Compress-LZF/lzfP.h	2004/12/15 07:09:34	1.2
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000 Marc Alexander Lehmann <pcg@goof.com>
+ * Copyright (c) 2000-2003 Marc Alexander Lehmann <pcg@goof.com>
  * 
  * Redistribution and use in source and binary forms, with or without modifica-
  * tion, are permitted provided that the following conditions are met:
@@ -24,6 +24,16 @@
  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
  * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License version 2 (the "GPL"), in which case the
+ * provisions of the GPL are applicable instead of the above. If you wish to
+ * allow the use of your version of this file only under the terms of the
+ * GPL and not to allow others to use your version of this file under the
+ * BSD license, indicate your decision by deleting the provisions above and
+ * replace them with the notice and other provisions required by the GPL. If
+ * you do not delete the provisions above, a recipient may use your version
+ * of this file under either the BSD or the GPL.
  */
 
 #ifndef LZFP_h
@@ -48,9 +58,9 @@
 #endif
 
 /*
- * sacrifice some compression quality in favour of speed.
+ * sacrifice some compression quality in favour of compression speed.
  * (roughly 1-2% worse compression for large blocks and
- * 9-10% for small, redundant, blocks and 20% better speed in both cases)
+ * 9-10% for small, redundant, blocks and >>20% better speed in both cases)
  * In short: enable this for binary data, disable this for text data.
  */
 #ifndef ULTRA_FAST
@@ -80,11 +90,31 @@
 # define INIT_HTAB 0
 #endif
 
+/*
+ * avoid assigning values to errno variable? for some embedding purposes
+ * (linux kernel for example), this is neccessary. NOTE: this breaks
+ * the documentation in lzf.h.
+ */
+#ifndef AVOID_ERRNO
+# define AVOID_ERRNO 0
+#endif
+
+/*
+ * Wether to pass the LZF_STATE variable as argument, or allocate it
+ * on the stack. For small-stack environments, define this to 1.
+ * NOTE: this breaks the prototype in lzf.h.
+ */
+#ifndef LZF_STATE_ARG
+# define LZF_STATE_ARG 0
+#endif
+
 /*****************************************************************************/
 /* nothing should be changed below */
 
 typedef unsigned char u8;
 
+typedef const u8 *LZF_STATE[1 << (HLOG)];
+
 #if !STRICT_ALIGN
 /* for unaligned accesses we need a 16 bit datatype. */
 # include <limits.h>
@@ -93,7 +123,6 @@
 # elif UINT_MAX == 65535
     typedef unsigned int u16;
 # else
-#  warn need 16 bit datatype when STRICT_ALIGN == 0
 #  undef STRICT_ALIGN
 #  define STRICT_ALIGN 1
 # endif