/* -*-c-*-
*
- * $Id: mpmul.c,v 1.1 2000/07/01 11:21:39 mdw Exp $
+ * $Id: mpmul.c,v 1.5 2004/04/08 01:36:15 mdw Exp $
*
* Multiply many small numbers together
*
* (c) 2000 Straylight/Edgeware
*/
-/*----- Licensing notice --------------------------------------------------*
+/*----- Licensing notice --------------------------------------------------*
*
* This file is part of Catacomb.
*
* 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,
* MA 02111-1307, USA.
*/
-/*----- Revision history --------------------------------------------------*
- *
- * $Log: mpmul.c,v $
- * Revision 1.1 2000/07/01 11:21:39 mdw
- * New interface for computing products of many (small) integers.
- *
- */
-
/*----- Header files ------------------------------------------------------*/
#include "mp.h"
}
if (i > HWM) {
- while (i > LWM) {
+ while (i > LWM || (i > 0 && MP_LEN(b->v[i - 1]) <= MP_LEN(x))) {
i--;
x = mp_mul(x, x, b->v[i]);
MP_DROP(b->v[i]);
}
}
- b->v[i] = x;
+ b->v[i++] = x;
b->i = i;
}
return (mpmul_done(&b));
}
+/*----- Test rig ----------------------------------------------------------*/
+
+#ifdef TEST_RIG
+
+#include <mLib/testrig.h>
+
+static int vfact(dstr *v)
+{
+ unsigned long x = *(unsigned long *)v[0].buf;
+ mp *fx = *(mp **)v[1].buf;
+ mp *y = mp_factorial(x);
+ int ok = 1;
+ if (!MP_EQ(fx, y)) {
+ fprintf(stderr, "factorial failed\n");
+ MP_FPRINTF(stderr, (stderr, "%lu! = ", x), fx);
+ MP_EPRINT("result", y);
+ ok = 0;
+ }
+ mp_drop(fx);
+ mp_drop(y);
+ assert(mparena_count(MPARENA_GLOBAL) == 0);
+ return (ok);
+}
+
+static test_chunk tests[] = {
+ { "factorial", vfact, { &type_ulong, &type_mp, 0 } },
+ { 0, 0, { 0 } }
+};
+
+int main(int argc, char *argv[])
+{
+ test_run(argc, argv, tests, SRCDIR "/tests/mp");
+ return (0);
+}
+
+#endif
+
/*----- That's all, folks -------------------------------------------------*/