--- /dev/null
+/* -*-c-*-
+ *
+ * Exponentiation for binary polynomials
+ *
+ * (c) 2004 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.
+ */
+
+/*----- Header files ------------------------------------------------------*/
+
+#include <assert.h>
+
+#include "gf.h"
+#include "gf-exp.h"
+
+/*----- Main code ---------------------------------------------------------*/
+
+/* --- @gf_exp@ --- *
+ *
+ * Arguments: @mp *d@ = fake destination
+ * @mp *a@ = base
+ * @mp *e@ = exponent
+ *
+ * Returns: Result, %$a^e$%.
+ */
+
+mp *gf_exp(mp *d, mp *a, mp *e)
+{
+ mp *x = MP_ONE;
+ mp *spare = (e->f & MP_BURN) ? MP_NEWSEC : MP_NEW;
+ assert(!MP_NEGP(e));
+
+ MP_COPY(a);
+ if (MP_ZEROP(e))
+ ;
+ else if (MP_LEN(e) < EXP_THRESH)
+ EXP_SIMPLE(x, a, e);
+ else
+ EXP_WINDOW(x, a, e);
+ mp_drop(d);
+ mp_drop(spare);
+ mp_drop(a);
+ return (x);
+}
+
+/*----- That's all, folks -------------------------------------------------*/