--- /dev/null
+/* -*-c-*-
+ *
+ * $Id: primorial.c,v 1.1 1999/12/22 15:51:02 mdw Exp $
+ *
+ * Computes the product of the small primes
+ *
+ * (c) 1999 Straylight/Edgeware
+ */
+
+/*----- Licensing notice --------------------------------------------------*
+ *
+ * This file is part of Catacomb.
+ *
+ * Catacomb is free software; you can redistribute it and/or modify
+ * 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: primorial.c,v $
+ * Revision 1.1 1999/12/22 15:51:02 mdw
+ * Calculate product of small primes for DSA prime search.
+ *
+ */
+
+/*----- Header files ------------------------------------------------------*/
+
+#include "mp.h"
+#include "primetab.h"
+
+/*----- Global variables --------------------------------------------------*/
+
+mp *primorial = 0;
+
+/*----- Main code ---------------------------------------------------------*/
+
+/* --- @primorial_setup@ --- *
+ *
+ * Arguments: ---
+ *
+ * Returns: ---
+ *
+ * Use: Computes the product of the small primes in the table
+ * @primetab@.
+ */
+
+void primorial_setup(void)
+{
+ mp *p;
+ mp q;
+ mpw qw;
+ int i;
+
+ if (primorial)
+ return;
+ mp_build(&q, &qw, &qw + 1);
+ p = MP_ONE;
+ for (i = 0; i < NPRIME; i++) {
+ qw = primetab[i];
+ p = mp_mul(p, p, &q);
+ }
+ mp_minimize(p);
+ primorial = p;
+}
+
+/*----- That's all, folks -------------------------------------------------*/
--- /dev/null
+/* -*-c-*-
+ *
+ * $Id: primorial.h,v 1.1 1999/12/22 15:51:02 mdw Exp $
+ *
+ * Computes the product of the small primes
+ *
+ * (c) 1999 Straylight/Edgeware
+ */
+
+/*----- Licensing notice --------------------------------------------------*
+ *
+ * This file is part of Catacomb.
+ *
+ * Catacomb is free software; you can redistribute it and/or modify
+ * 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: primorial.h,v $
+ * Revision 1.1 1999/12/22 15:51:02 mdw
+ * Calculate product of small primes for DSA prime search.
+ *
+ */
+
+#ifndef CATACOMB_PRIMORIAL_H
+#define CATACOMB_PRIMORIAL_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/*----- Header files ------------------------------------------------------*/
+
+#ifndef CATACOMB_MP_H
+# include "mp.h"
+#endif
+
+/*----- Global variables --------------------------------------------------*/
+
+extern mp *primorial;
+
+/*----- Main code ---------------------------------------------------------*/
+
+/* --- @primorial_setup@ --- *
+ *
+ * Arguments: ---
+ *
+ * Returns: ---
+ *
+ * Use: Computes the product of the small primes in the table
+ * @primetab@.
+ */
+
+extern void primorial_setup(void);
+
+/*----- That's all, folks -------------------------------------------------*/
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif