You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
/* operator>> -- C++-style input of mpz_t.
|
|
|
|
Copyright 2001, 2003 Free Software Foundation, Inc.
|
|
|
|
This file is part of the GNU MP Library.
|
|
|
|
The GNU MP Library is free software; you can redistribute it and/or modify
|
|
it under the terms of either:
|
|
|
|
* the GNU Lesser General Public License as published by the Free
|
|
Software Foundation; either version 3 of the License, or (at your
|
|
option) any later version.
|
|
|
|
or
|
|
|
|
* 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.
|
|
|
|
or both in parallel, as here.
|
|
|
|
The GNU MP 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 General Public License
|
|
for more details.
|
|
|
|
You should have received copies of the GNU General Public License and the
|
|
GNU Lesser General Public License along with the GNU MP Library. If not,
|
|
see https://www.gnu.org/licenses/. */
|
|
|
|
#include <cctype>
|
|
#include <iostream>
|
|
#include <string>
|
|
#include "gmp-impl.h"
|
|
|
|
using namespace std;
|
|
|
|
|
|
// For g++ libstdc++ parsing see num_get<chartype,initer>::_M_extract_int in
|
|
// include/bits/locale_facets.tcc.
|
|
|
|
istream &
|
|
operator>> (istream &i, mpz_ptr z)
|
|
{
|
|
char c = 0;
|
|
i.get(c); // start reading
|
|
|
|
if (i.flags() & ios::skipws) // skip initial whitespace
|
|
{
|
|
#if HAVE_STD__LOCALE
|
|
const ctype<char>& ct = use_facet< ctype<char> >(i.getloc());
|
|
#define cxx_isspace(c) (ct.is(ctype_base::space,(c)))
|
|
#else
|
|
#define cxx_isspace(c) isspace(c)
|
|
#endif
|
|
|
|
while (cxx_isspace(c) && i.get(c))
|
|
;
|
|
}
|
|
|
|
return __gmpz_operator_in_nowhite (i, z, c);
|
|
}
|