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Diffstat (limited to 'mpi/mpih-add.c')
-rw-r--r-- | mpi/mpih-add.c | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/mpi/mpih-add.c b/mpi/mpih-add.c deleted file mode 100644 index d6b0c3eb0..000000000 --- a/mpi/mpih-add.c +++ /dev/null @@ -1,88 +0,0 @@ -/* mpihelp-add.c - MPI helper functions - * Copyright (C) 1998 Free Software Foundation, Inc. - * Copyright (C) 1994, 1996 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 - * - * Note: This code is heavily based on the GNU MP Library. - * Actually it's the same code with only minor changes in the - * way the data is stored; this is to support the abstraction - * of an optional secure memory allocation which may be used - * to avoid revealing of sensitive data due to paging etc. - * The GNU MP Library itself is published under the LGPL; - * however I decided to publish this code under the plain GPL. - */ - -#include <config.h> -#include <stdio.h> -#include <stdlib.h> - -#include "mpi-internal.h" - -/**************** - * Add to S1_PTR with size S1_SIZE the limb S2_LIMB and - * store the result in RES_PTR. Return the carry - * S1_SIZE must be > 0. - */ -#ifndef __GNUC__ -/*_EXTERN_INLINE */ -mpi_limb_t -mpihelp_add_1( mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, - mpi_size_t s1_size, mpi_limb_t s2_limb) -{ - mpi_limb_t x; - - x = *s1_ptr++; - s2_limb += x; - *res_ptr++ = s2_limb; - if( s2_limb < x ) { /* sum is less than the left operand: handle carry */ - while( --s1_size ) { - x = *s1_ptr++ + 1; /* add carry */ - *res_ptr++ = x; /* and store */ - if( x ) /* not 0 (no overflow): we can stop */ - goto leave; - } - return 1; /* return carry (size of s1 to small) */ - } - - leave: - if( res_ptr != s1_ptr ) { /* not the same variable */ - mpi_size_t i; /* copy the rest */ - for( i=0; i < s1_size-1; i++ ) - res_ptr[i] = s1_ptr[i]; - } - return 0; /* no carry */ -} - - - -/*_EXTERN_INLINE*/ -mpi_limb_t -mpihelp_add(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, mpi_size_t s1_size, - mpi_ptr_t s2_ptr, mpi_size_t s2_size) -{ - mpi_limb_t cy = 0; - - if( s2_size ) - cy = mpihelp_add_n( res_ptr, s1_ptr, s2_ptr, s2_size ); - - if( s1_size - s2_size ) - cy = mpihelp_add_1( res_ptr + s2_size, s1_ptr + s2_size, - s1_size - s2_size, cy); - return cy; -} -#endif |