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/*
* Copyright (c) 2003 Bob Deblier
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/*!\file mpnumber.c
* \brief Multi-precision numbers.
* \author Bob Deblier <bob.deblier@pandora.be>
* \ingroup MP_m
*/
#include "system.h"
#include "mpnumber.h"
#include "mp.h"
#include "debug.h"
void mpnzero(mpnumber* n)
{
n->size = 0;
n->data = (mpw*) 0;
}
/*@-compdef @*/ /* n->data not initialized */
void mpnsize(mpnumber* n, size_t size)
{
if (size)
{
if (n->data)
{
if (n->size != size)
n->data = (mpw*) realloc(n->data, size * sizeof(*n->data));
}
else
n->data = (mpw*) malloc(size * sizeof(*n->data));
if (n->data)
n->size = size;
else
{
n->size = 0;
n->data = (mpw*) 0;
}
}
else if (n->data)
{
free(n->data);
n->data = (mpw*) 0;
n->size = 0;
}
}
/*@=compdef @*/
void mpninit(mpnumber* n, size_t size, const mpw* data)
{
n->size = size;
if (n->data)
{
free(n->data);
n->data = (mpw*) 0;
}
n->data = (mpw*) malloc(size * sizeof(*n->data));
if (n->data != (mpw*) 0 && data != (mpw*) 0)
mpcopy(size, n->data, data);
}
void mpnfree(mpnumber* n)
{
if (n->data)
{
free(n->data);
n->data = (mpw*) 0;
}
n->size = 0;
}
void mpncopy(mpnumber* n, const mpnumber* copy)
{
mpnset(n, copy->size, copy->data);
}
void mpnwipe(mpnumber* n)
{
if (n->data)
mpzero(n->size, n->data);
}
void mpnset(mpnumber* n, size_t size, const mpw* data)
{
if (size)
{
if (n->data)
{
if (n->size != size)
n->data = (mpw*) realloc(n->data, size * sizeof(*n->data));
}
else
n->data = (mpw*) malloc(size * sizeof(*n->data));
if (n->data != (mpw*) 0 && data != (mpw*) 0)
{
n->size = size;
/*@-nullpass@*/ /* data is notnull */
mpcopy(n->size, n->data, data);
/*@=nullpass@*/
}
else
{
n->size = 0;
n->data = (mpw*) 0;
}
}
else if (n->data)
{
free(n->data);
n->data = (mpw*) 0;
n->size = 0;
}
}
void mpnsetw(mpnumber* n, mpw val)
{
if (n->data)
{
if (n->size != 1)
n->data = (mpw*) realloc(n->data, 1 * sizeof(*n->data));
}
else
n->data = (mpw*) malloc(1 * sizeof(*n->data));
if (n->data)
{
n->size = 1;
n->data[0] = val;
}
else
{
n->size = 0;
n->data = (mpw*) 0;
}
}
/*@-usedef @*/ /* n->data may be NULL */
void mpnsethex(mpnumber* n, const char* hex)
{
register size_t len = strlen(hex);
register size_t size = MP_NIBBLES_TO_WORDS(len + MP_WNIBBLES - 1);
if (n->data)
{
if (n->size != size)
n->data = (mpw*) realloc(n->data, size * sizeof(*n->data));
}
else
n->data = (mpw*) malloc(size * sizeof(*n->data));
if (n->data)
{
n->size = size;
(void) hs2ip(n->data, size, hex, len);
}
else {
n->size = 0;
n->data = (mpw*)0;
}
}
/*@=usedef @*/
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