get_d.c revision 1.1.1.1
1/* double mpf_get_d (mpf_t src) -- return SRC truncated to a double. 2 3Copyright 1996, 2001, 2002, 2003, 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 23double 24mpf_get_d (mpf_srcptr src) 25{ 26 mp_size_t size, abs_size; 27 long exp; 28 29 size = SIZ (src); 30 if (UNLIKELY (size == 0)) 31 return 0.0; 32 33 abs_size = ABS (size); 34 exp = (EXP (src) - abs_size) * GMP_NUMB_BITS; 35 return mpn_get_d (PTR (src), abs_size, size, exp); 36} 37