From 8a33545fd429ade33e2efad4ee973dbece62f560 Mon Sep 17 00:00:00 2001
From: mdw <mdw>
Date: Tue, 15 Aug 2000 21:45:05 +0000
Subject: [PATCH] Use the new trial division equipment in pfilt.  This gives a
 10% performance improvement in dsa-gen.t.

---
 dsa-gen.c | 18 +++++++-----------
 limlee.c  | 15 ++++++++-------
 2 files changed, 15 insertions(+), 18 deletions(-)

diff --git a/dsa-gen.c b/dsa-gen.c
index 3943dd5..2d89115 100644
--- a/dsa-gen.c
+++ b/dsa-gen.c
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: dsa-gen.c,v 1.6 2000/07/29 10:00:14 mdw Exp $
+ * $Id: dsa-gen.c,v 1.7 2000/08/15 21:45:05 mdw Exp $
  *
  * Generate DSA shared parameters
  *
@@ -30,6 +30,10 @@
 /*----- Revision history --------------------------------------------------* 
  *
  * $Log: dsa-gen.c,v $
+ * Revision 1.7  2000/08/15 21:45:05  mdw
+ * Use the new trial division equipment in pfilt.  This gives a 10%
+ * performance improvement in dsa-gen.t.
+ *
  * Revision 1.6  2000/07/29 10:00:14  mdw
  * Rename `dsa_seed' to `dsa_gen' for consistency with other parameter-
  * generation interfaces.
@@ -100,15 +104,7 @@ static int next(pgen_event *ev, dsa_stepctx *d)
 
   /* --- Do the trial division --- */
 
-  {
-    mp *g = MP_NEW;
-    mp_gcd(&g, 0, 0, m, primorial);
-    if (MP_CMP(g, ==, MP_ONE) || MP_CMP(g, ==, m))
-      rc = PGEN_TRY;
-    else
-      rc = PGEN_FAIL;
-    mp_drop(g);
-  }
+  rc = pfilt_smallfactor(m);
 
   /* --- Return the result --- */
 
@@ -265,7 +261,7 @@ static int verify(dstr *v)
   if (!rc) {
     mp_drop(dp.q); mp_drop(dp.p); mp_drop(dp.g);
   }
-  assert(mparena_count(MPARENA_GLOBAL) == 1); /* Primorial! */
+  assert(mparena_count(MPARENA_GLOBAL) == 0);
   return (ok);
 }
 
diff --git a/limlee.c b/limlee.c
index dd03866..45f579d 100644
--- a/limlee.c
+++ b/limlee.c
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: limlee.c,v 1.3 2000/07/29 09:58:32 mdw Exp $
+ * $Id: limlee.c,v 1.4 2000/08/15 21:45:05 mdw Exp $
  *
  * Generate Lim-Lee primes
  *
@@ -30,6 +30,10 @@
 /*----- Revision history --------------------------------------------------* 
  *
  * $Log: limlee.c,v $
+ * Revision 1.4  2000/08/15 21:45:05  mdw
+ * Use the new trial division equipment in pfilt.  This gives a 10%
+ * performance improvement in dsa-gen.t.
+ *
  * Revision 1.3  2000/07/29 09:58:32  mdw
  * (limlee): Bug fix.  Old versions didn't set the filter step if @ql@ was
  * an exact divisor of @pl@.
@@ -168,7 +172,6 @@ mp *limlee(const char *name, mp *d, mp *newp,
 
   /* --- Now allocate the working memory --- */
 
-  primorial_setup();
   v = xmalloc(mm * sizeof(mp *));
   c = xmalloc(mm);
 
@@ -226,20 +229,18 @@ again:
 
     {
       mp *p = mpmul_done(&mmul);
-      mp *g = newp;
+      mp *g;
       int rc;
 
       /* --- Check for small factors --- */
 
       p = mp_lsl(p, p, 1);
       p = mp_add(p, p, MP_ONE);
-      mp_gcd(&g, 0, 0, p, primorial);
-      if (MP_CMP(g, !=, MP_ONE)) {
-	mp_drop(g);
+      rc = pfilt_smallfactor(p);
+      if (rc == PGEN_FAIL) {
 	mp_drop(p);
 	continue;
       }
-      mp_drop(g);
 
       /* --- Send an event out --- */
 
-- 
2.11.0