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/*
Copyright (C) 2003-2006 Tommi Junttila
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2
as published by the Free Software Foundation.
This program 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/* FSF address fixed in the above notice on 1 Oct 2009 by Tamas Nepusz */
#include "bliss_utils.hh"
#include "bliss_bignum.hh"
using namespace std;
#include <cstring>
#if defined(BLISS_USE_GMP)
namespace igraph {
int BigNum::tostring(char **str) {
*str=igraph_Calloc(mpz_sizeinbase(v, 10)+2, char);
if (! *str) {
IGRAPH_ERROR("Cannot convert big number to string", IGRAPH_ENOMEM);
}
mpz_get_str(*str, 10, v);
return 0;
}
}
#else
namespace igraph {
int BigNum::tostring(char **str) {
int size=static_cast<int>( (log(abs(v))/log(10.0))+4 );
*str=igraph_Calloc(size, char );
if (! *str) {
IGRAPH_ERROR("Cannot convert big number to string", IGRAPH_ENOMEM);
}
std::stringstream ss;
ss << v;
strncpy(*str, ss.str().c_str(), size);
return 0;
}
}
#endif
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