X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/mLib/blobdiff_plain/dcda594451ecd4d8ba699da3e4cc3c723f31b538..17119f584e90f494da54aa9e2d1d10227213d96b:/assoc.h?ds=sidebyside

diff --git a/assoc.h b/assoc.h
index 6eea33a..efc3f0c 100644
--- a/assoc.h
+++ b/assoc.h
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: assoc.h,v 1.1 2001/01/20 11:50:58 mdw Exp $
+ * $Id: assoc.h,v 1.3 2004/04/08 01:36:11 mdw Exp $
  *
  * Assocation tables
  *
@@ -27,15 +27,6 @@
  * MA 02111-1307, USA.
  */
 
-/*----- Revision history --------------------------------------------------* 
- *
- * $Log: assoc.h,v $
- * Revision 1.1  2001/01/20 11:50:58  mdw
- * Hash tables indexed by atoms, to avoid expense of hashing keys on each
- * lookup, and to reduce storage used by key texts.
- *
- */
-
 #ifndef MLIB_ASSOC_H
 #define MLIB_ASSOC_H
 
@@ -67,6 +58,8 @@ typedef struct assoc_base {
 
 typedef struct { hash_iter i; } assoc_iter;
 
+#define ASSOC_ATOM(p) (((assoc_base *)(p))->a + 0)
+
 /*----- Functions provided ------------------------------------------------*/
 
 /* --- @assoc_create@ --- *