X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/7d5fa32a96bb9badc88fe1b07086c6f770c0de31..c65df27983057ec76ed0e72bb370f9a5ae7dad28:/karatsuba.h

diff --git a/karatsuba.h b/karatsuba.h
index 885d907..f1d1870 100644
--- a/karatsuba.h
+++ b/karatsuba.h
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: karatsuba.h,v 1.1 2000/06/17 11:42:11 mdw Exp $
+ * $Id: karatsuba.h,v 1.3 2004/04/08 01:36:15 mdw Exp $
  *
  * Macros for Karatsuba functions
  *
@@ -27,17 +27,8 @@
  * MA 02111-1307, USA.
  */
 
-/*----- Revision history --------------------------------------------------* 
- *
- * $Log: karatsuba.h,v $
- * Revision 1.1  2000/06/17 11:42:11  mdw
- * Moved the Karatsuba macros into a separate file for better sharing.
- * Fixed some comments.
- *
- */
-
-#ifndef CATACOMB_MPX_KMAC_H
-#define CATACOMB_MPX_KMAC_H
+#ifndef CATACOMB_KARATSUBA_H
+#define CATACOMB_KARATSUBA_H
 
 #ifdef __cplusplus
   extern "C" {
@@ -49,7 +40,7 @@
 #  include "mpw.h"
 #endif
 
-/*----- Macros provided ---------------------------------------------------*/
+/*----- Normal arithmetic macros ------------------------------------------*/
 
 #define UADD(dv, av, avl) do {						\
   mpw *_dv = (dv);							\
@@ -119,6 +110,31 @@
   }									\
 } while (0)
 
+/*----- Binary polynomial arithmetic macros -------------------------------*/
+
+#define UXOR(dv, av, avl) do {						\
+  mpw *_dv = (dv);							\
+  const mpw *_av = (av), *_avl = (avl);					\
+									\
+  while (_av < _avl)							\
+    *_dv++ ^= *_av++;							\
+} while (0)
+
+#define UXOR2(dv, dvl, av, avl, bv, bvl) do {				\
+  mpw *_dv = (dv), *_dvl = (dvl);					\
+  const mpw *_av = (av), *_avl = (avl);					\
+  const mpw *_bv = (bv), *_bvl = (bvl);					\
+									\
+  while (_av < _avl || _bv < _bvl) {					\
+    mpw _a, _b;								\
+    _a = (_av < _avl) ? *_av++ : 0;					\
+    _b = (_bv < _bvl) ? *_bv++ : 0;					\
+    *_dv++ = _a ^ _b;							\
+  }									\
+  while (_dv < _dvl)							\
+    *_dv++ = 0;								\
+} while (0)
+
 /*----- That's all, folks -------------------------------------------------*/
 
 #ifdef __cplusplus