X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/b085fd9162fa3ff5b16788ced6d11a71ffe5a5fe..1589affab225db500965e2cb869c534d6860e6bd:/ec-exp.h

diff --git a/ec-exp.h b/ec-exp.h
index c760c43..fb3ed6e 100644
--- a/ec-exp.h
+++ b/ec-exp.h
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: ec-exp.h,v 1.1 2002/01/13 13:48:44 mdw Exp $
+ * $Id: ec-exp.h,v 1.4 2004/03/22 02:19:10 mdw Exp $
  *
  * Exponentiation operations for elliptic curves
  *
@@ -30,6 +30,20 @@
 /*----- Revision history --------------------------------------------------* 
  *
  * $Log: ec-exp.h,v $
+ * Revision 1.4  2004/03/22 02:19:10  mdw
+ * Rationalise the sliding-window threshold.  Drop guarantee that right
+ * arguments to EC @add@ are canonical, and fix up projective implementations
+ * to cope.
+ *
+ * Revision 1.3  2004/03/21 22:52:06  mdw
+ * Merge and close elliptic curve branch.
+ *
+ * Revision 1.2.4.1  2004/03/20 00:13:31  mdw
+ * Projective coordinates for prime curves
+ *
+ * Revision 1.2  2003/05/15 23:25:59  mdw
+ * Make elliptic curve stuff build.
+ *
  * Revision 1.1  2002/01/13 13:48:44  mdw
  * Further progress.
  *
@@ -46,23 +60,24 @@
 
 #define EXP_TYPE ec
 
-#define EXP_COPY(d, x) do {						\
-  d.x = MP_COPY(x.x);							\
-  d.y = MP_COPY(x.y);							\
-  d.z = x.z ? MP_COPY(x.x) : MP_NEW;					\
+#define EXP_COPY(d, p) do {						\
+  (d).x = MP_COPY((p).x);						\
+  (d).y = MP_COPY((p).y);						\
+  (d).z = (p).z ? MP_COPY((p).z) : MP_NEW;				\
 } while (0)  
-#define EXP_DROP(x) EC_DESTROY(c, &x)
+#define EXP_DROP(x) EC_DESTROY(&(x))
 
-#define EXP_MUL(a, x) EC_ADD(c, &a, &a, &x)
-#define EXP_SQR(a) EC_DBL(c, &a, &a);
+#define EXP_MUL(a, x) EC_ADD(c, &(a), &(a), &(x))
+#define EXP_SQR(a) EC_DBL(c, &(a), &(a));
+#define EXP_FIX(x)
 
 #define EXP_SETMUL(d, x, y) do {					\
-  EC_CREATE(&d);							\
-  EC_ADD(c, &d, &x, &y);						\
+  EC_CREATE(&(d));							\
+  EC_ADD(c, &(d), &(x), &(y));						\
 } while (0)
 #define EXP_SETSQR(d, x) do {						\
-  EC_CREATE(&d);							\
-  EC_DBL(c, &d, &x);							\
+  EC_CREATE(&(d));							\
+  EC_DBL(c, &(d), &(x));						\
 } while (0)
 
 #include "exp.h"