X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/34e4f738bcba58e6d8c4cabbb0b3232a65b42a9d..3384672ab8c0ebc1aec36175d255d2674b172b2d:/mpbarrett.h

diff --git a/mpbarrett.h b/mpbarrett.h
index 3168205..bb8b36a 100644
--- a/mpbarrett.h
+++ b/mpbarrett.h
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: mpbarrett.h,v 1.4 2004/04/01 12:50:09 mdw Exp $
+ * $Id$
  *
  * Barrett modular reduction
  *
@@ -27,27 +27,6 @@
  * MA 02111-1307, USA.
  */
 
-/*----- Revision history --------------------------------------------------* 
- *
- * $Log: mpbarrett.h,v $
- * Revision 1.4  2004/04/01 12:50:09  mdw
- * Add cyclic group abstraction, with test code.  Separate off exponentation
- * functions for better static linking.  Fix a buttload of bugs on the way.
- * Generally ensure that negative exponents do inversion correctly.  Add
- * table of standard prime-field subgroups.  (Binary field subgroups are
- * currently unimplemented but easy to add if anyone ever finds a good one.)
- *
- * Revision 1.3  2001/06/16 12:58:47  mdw
- * Added simultaneous exponentiation with Barrett reduction.
- *
- * Revision 1.2  2000/10/08 12:03:44  mdw
- * (mpbarrett_reduce): Cope with negative numbers.
- *
- * Revision 1.1  1999/12/10 23:22:00  mdw
- * Barrett reduction support: works with even moduli.
- *
- */
-
 /*----- Notes on Barrett reduction ----------------------------------------*
  *
  * Barrett reduction is a technique for computing modular residues.  Unlike
@@ -93,13 +72,12 @@ typedef struct mpbarrett {
  * Arguments:	@mpbarrett *mb@ = pointer to Barrett reduction context
  *		@mp *m@ = modulus to work to
  *
- *
- * Returns:	---
+ * Returns:	Zero on success, nonzero on error.
  *
  * Use:		Initializes a Barrett reduction context ready for use.
  */
 
-extern void mpbarrett_create(mpbarrett */*mb*/, mp */*m*/);
+extern int mpbarrett_create(mpbarrett */*mb*/, mp */*m*/);
 
 /* --- @mpbarrett_destroy@ --- *
  *