Initial revision

1 files changed, 29 insertions, 0 deletions

diff --git a/gtp/lookupa.h b/gtp/lookupa.h
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+/*
+------------------------------------------------------------------------------
+By Bob Jenkins, September 1996.
+lookupa.h, a hash function for table lookup, same function as lookup.c.
+Use this code in any way you wish.  Public Domain.  It has no warranty.
+Source is http://burtleburtle.net/bob/c/lookupa.h
+------------------------------------------------------------------------------
+*/
+
+/* Uncommented by Jens Jakobsen 20020717 
+#ifndef STANDARD
+#include "standard.h"
+#endif
+*/
+
+#ifndef LOOKUPA
+#define LOOKUPA
+
+typedef  unsigned long  int  ub4;   /* unsigned 4-byte quantities */
+typedef  unsigned       char ub1;
+
+#define CHECKSTATE 8
+#define hashsize(n) ((ub4)1<<(n))
+#define hashmask(n) (hashsize(n)-1)
+
+ub4 lookup(/*_ ub1 *k, ub4 length, ub4 level _*/);
+void checksum(/*_ ub1 *k, ub4 length, ub4 *state _*/);
+
+#endif /* LOOKUPA */