1/* mpf_set_z -- Assign a float from an integer. 2 3Copyright 1996, 2001, 2004 Free Software Foundation, Inc. 4 5This file is part of the GNU MP Library. 6 7The GNU MP Library is free software; you can redistribute it and/or modify 8it under the terms of the GNU Lesser General Public License as published by 9the Free Software Foundation; either version 3 of the License, or (at your 10option) any later version. 11 12The GNU MP Library is distributed in the hope that it will be useful, but 13WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 14or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 15License for more details. 16 17You should have received a copy of the GNU Lesser General Public License 18along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */ 19 20#include "gmp.h" 21#include "gmp-impl.h" 22 23void 24mpf_set_z (mpf_ptr r, mpz_srcptr u) 25{ 26 mp_ptr rp, up; 27 mp_size_t size, asize; 28 mp_size_t prec; 29 30 prec = PREC (r) + 1; 31 size = SIZ (u); 32 asize = ABS (size); 33 rp = PTR (r); 34 up = PTR (u); 35 36 EXP (r) = asize; 37 38 if (asize > prec) 39 { 40 up += asize - prec; 41 asize = prec; 42 } 43 44 SIZ (r) = size >= 0 ? asize : -asize; 45 MPN_COPY (rp, up, asize); 46} 47