1 /* mpz_init_set (src_integer) -- Make a new multiple precision number with 2 a value copied from SRC_INTEGER. 3 4 Copyright 1991, 1993, 1994, 1996, 2000-2002, 2012 Free Software Foundation, 5 Inc. 6 7 This file is part of the GNU MP Library. 8 9 The GNU MP Library is free software; you can redistribute it and/or modify 10 it under the terms of either: 11 12 * the GNU Lesser General Public License as published by the Free 13 Software Foundation; either version 3 of the License, or (at your 14 option) any later version. 15 16 or 17 18 * the GNU General Public License as published by the Free Software 19 Foundation; either version 2 of the License, or (at your option) any 20 later version. 21 22 or both in parallel, as here. 23 24 The GNU MP Library is distributed in the hope that it will be useful, but 25 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 26 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 27 for more details. 28 29 You should have received copies of the GNU General Public License and the 30 GNU Lesser General Public License along with the GNU MP Library. If not, 31 see https://www.gnu.org/licenses/. */ 32 33 #include "gmp.h" 34 #include "gmp-impl.h" 35 36 void 37 mpz_init_set (mpz_ptr w, mpz_srcptr u) 38 { 39 mp_ptr wp, up; 40 mp_size_t usize, size; 41 42 usize = SIZ (u); 43 size = ABS (usize); 44 45 ALLOC (w) = MAX (size, 1); 46 PTR (w) = __GMP_ALLOCATE_FUNC_LIMBS (ALLOC (w)); 47 48 wp = PTR (w); 49 up = PTR (u); 50 51 MPN_COPY (wp, up, size); 52 SIZ (w) = usize; 53 54 #ifdef __CHECKER__ 55 /* let the low limb look initialized, for the benefit of mpz_get_ui etc */ 56 if (size == 0) 57 wp[0] = 0; 58 #endif 59 } 60