diff options
Diffstat (limited to 'lib/mpi/mpi-gcd.c')
| -rw-r--r-- | lib/mpi/mpi-gcd.c | 59 | 
1 files changed, 0 insertions, 59 deletions
diff --git a/lib/mpi/mpi-gcd.c b/lib/mpi/mpi-gcd.c deleted file mode 100644 index 13c48aef9c4e..000000000000 --- a/lib/mpi/mpi-gcd.c +++ /dev/null @@ -1,59 +0,0 @@ -/* mpi-gcd.c  -  MPI functions - * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. - * - * This file is part of GnuPG. - * - * GnuPG is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * GnuPG 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA - */ - -#include "mpi-internal.h" - -/**************** - * Find the greatest common divisor G of A and B. - * Return: true if this 1, false in all other cases - */ -int mpi_gcd(MPI g, const MPI xa, const MPI xb) -{ -	MPI a = NULL, b = NULL; - -	if (mpi_copy(&a, xa) < 0) -		goto nomem; - -	if (mpi_copy(&b, xb) < 0) -		goto nomem; - -	/* TAOCP Vol II, 4.5.2, Algorithm A */ -	a->sign = 0; -	b->sign = 0; -	while (mpi_cmp_ui(b, 0)) { -		if (mpi_fdiv_r(g, a, b) < 0)	/* g used as temorary variable */ -			goto nomem; -		if (mpi_set(a, b) < 0) -			goto nomem; -		if (mpi_set(b, g) < 0) -			goto nomem; -	} -	if (mpi_set(g, a) < 0) -		goto nomem; - -	mpi_free(a); -	mpi_free(b); -	return !mpi_cmp_ui(g, 1); - -nomem: -	mpi_free(a); -	mpi_free(b); -	return -ENOMEM; -}  | 
