hashsum.1: Write some notes about compatibility with GNU Coreutils.

[u/mdw/catacomb] / group.h

diff --git a/group.h b/group.h
index aae0e60..a144706 100644 (file)
--- a/group.h
+++ b/group.h
@@ -7,7 +7,7 @@
  * (c) 2004 Straylight/Edgeware
  */
 
-/*----- Licensing notice --------------------------------------------------* 
+/*----- Licensing notice --------------------------------------------------*
  *
  * This file is part of Catacomb.
  *
@@ -15,12 +15,12 @@
  * it under the terms of the GNU Library General Public License as
  * published by the Free Software Foundation; either version 2 of the
  * License, or (at your option) any later version.
- * 
+ *
  * Catacomb 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 Library General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Library General Public
  * License along with Catacomb; if not, write to the Free
  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
@@ -341,6 +341,22 @@ typedef struct gprime_param {
 
 group *group_prime(const gprime_param */*gp*/);
 
+/*----- Binary field subgroups --------------------------------------------*/
+
+typedef gprime_param gbin_param;
+
+/* --- @group_binary@ --- *
+ *
+ * Arguments:  @const gbin_param *gb@ = group parameters
+ *
+ * Returns:    A pointer to the group, or null.
+ *
+ * Use:                Constructs an abstract group interface for a subgroup of a
+ *             prime field.  Group elements are @mp *@ pointers.
+ */
+
+group *group_binary(const gbin_param */*gp*/);
+
 /*----- Elliptic curve groups ---------------------------------------------*/
 
 /* --- @group_ec@ --- *