source/libs/gmp/gmp-src/mpz/iset_str.c

   1 /* mpz_init_set_str(string, base) -- Convert the \0-terminated string STRING in
   2    base BASE to a multiple precision integer.  Allow white space in the string.
   3    If BASE == 0 determine the base in the C standard way, i.e.  0xhh...h means
   4    base 16, 0oo...o means base 8, otherwise assume base 10.
   5
   6 Copyright 1991, 1993-1995, 2000-2002, 2012 Free Software Foundation, Inc.
   7
   8 This file is part of the GNU MP Library.
   9
  10 The GNU MP Library is free software; you can redistribute it and/or modify
  11 it under the terms of either:
  12
  13   * the GNU Lesser General Public License as published by the Free
  14     Software Foundation; either version 3 of the License, or (at your
  15     option) any later version.
  16
  17 or
  18
  19   * the GNU General Public License as published by the Free Software
  20     Foundation; either version 2 of the License, or (at your option) any
  21     later version.
  22
  23 or both in parallel, as here.
  24
  25 The GNU MP Library is distributed in the hope that it will be useful, but
  26 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  27 or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  28 for more details.
  29
  30 You should have received copies of the GNU General Public License and the
  31 GNU Lesser General Public License along with the GNU MP Library.  If not,
  32 see https://www.gnu.org/licenses/.  */
  33
  34 #include "gmp.h"
  35 #include "gmp-impl.h"
  36
  37 int
  38 mpz_init_set_str (mpz_ptr x, const char *str, int base)
  39 {
  40   ALLOC (x) = 1;
  41   PTR (x) = __GMP_ALLOCATE_FUNC_LIMBS (1);
  42
  43   /* if str has no digits mpz_set_str leaves x->_mp_size unset */
  44   SIZ (x) = 0;
  45
  46 #ifdef __CHECKER__
  47   /* let the low limb look initialized, for the benefit of mpz_get_ui etc */
  48   PTR (x)[0] = 0;
  49 #endif
  50
  51   return mpz_set_str (x, str, base);
  52 }