X-Git-Url: https://git.distorted.org.uk/~mdw/catacomb/blobdiff_plain/ba6e6b64033b1f9de49feccb5c9cd438354481f7..0f00dc4c8eb47e67bc0f148c2dd109f73a451e0a:/field-exp.c

diff --git a/field-exp.c b/field-exp.c
deleted file mode 100644
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--- a/field-exp.c
+++ /dev/null
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-/* -*-c-*-
- *
- * $Id$
- *
- * Exponentiation in finite fields
- *
- * (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 "field.h"
-#include "field-exp.h"
-
-/*----- Main code ---------------------------------------------------------*/
-
-/* --- @field_exp@ --- *
- *
- * Arguments:	@field *f@ = pointer to field
- *		@mp *d@ = fake destination
- *		@mp *a@ = base
- *		@mp *e@ = exponent
- *
- * Returns:	Result, %$a^e$%.
- *
- * Use:		Exponentiation in a finite field.  Note that all quantities
- *		are in internal format.
- */
-
-mp *field_exp(field *f, mp *d, mp *a, mp *e)
-{
-  mp *x = MP_COPY(f->one);
-  mp *spare = (e->f & MP_BURN) ? MP_NEWSEC : MP_NEW;
-
-  MP_COPY(a);
-  MP_SHRINK(e);
-  if (MP_ZEROP(e))
-    ;
-  else {
-    if (MP_NEGP(e))
-      a = F_INV(f, a, a);
-    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 -------------------------------------------------*/