1 /* Auxiliary functions for C++-style input of GMP types.
3 Copyright 2001 Free Software Foundation, Inc.
5 This file is part of the GNU MP Library.
7 The GNU MP Library is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Lesser General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or (at your
10 option) any later version.
12 The GNU MP Library is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
15 License for more details.
17 You should have received a copy of the GNU Lesser General Public License
18 along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
30 __gmp_istream_set_base (istream &i, char &c, bool &zero, bool &showbase)
34 zero = showbase = false;
35 switch (i.flags() & ios::basefield)
47 showbase = true; // look for initial "0" or "0x" or "0X"
51 c = 0; // reset or we might loop indefinitely
53 if (c == 'x' || c == 'X')
61 zero = true; // if no other digit is read, the "0" counts
73 __gmp_istream_set_digits (string &s, istream &i, char &c, bool &ok, int base)
80 ok = true; // at least a valid digit was read
87 while (isdigit(c) && c != '8' && c != '9')
89 ok = true; // at least a valid digit was read
98 ok = true; // at least a valid digit was read