55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
/* operator>> -- C++-style input of mpz_t.
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Copyright 2001, 2003 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include <cctype>
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#include <iostream>
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#include <string>
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#include "gmp.h"
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#include "gmp-impl.h"
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using namespace std;
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// For g++ libstdc++ parsing see num_get<chartype,initer>::_M_extract_int in
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// include/bits/locale_facets.tcc.
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istream &
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operator>> (istream &i, mpz_ptr z)
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{
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char c = 0;
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i.get(c); // start reading
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if (i.flags() & ios::skipws) // skip initial whitespace
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{
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#if HAVE_STD__LOCALE
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const ctype<char>& ct = use_facet< ctype<char> >(i.getloc());
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#define cxx_isspace(c) (ct.is(ctype_base::space,(c)))
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#else
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#define cxx_isspace(c) isspace(c)
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#endif
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while (cxx_isspace(c) && i.get(c))
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;
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}
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return __gmpz_operator_in_nowhite (i, z, c);
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}
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