fixed odd read('*a') behaviour in Windows (A. Kakuto)
[luatex.git] / source / libs / mpfr / mpfr-3.1.2 / src / setmax.c
blobe88a70947cd339442c094617111c1a082d445526
1 /* mpfr_setmax -- maximum representable floating-point number (raw version)
3 Copyright 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
4 Contributed by the AriC and Caramel projects, INRIA.
6 This file is part of the GNU MPFR Library.
8 The GNU MPFR Library is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or (at your
11 option) any later version.
13 The GNU MPFR Library is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
16 License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see
20 http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
21 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
23 #include "mpfr-impl.h"
25 /* Note: the flags are not cleared and the current sign is kept. */
27 void
28 mpfr_setmax (mpfr_ptr x, mpfr_exp_t e)
30 mp_size_t xn, i;
31 int sh;
32 mp_limb_t *xp;
34 MPFR_SET_EXP (x, e);
35 xn = MPFR_LIMB_SIZE (x);
36 sh = (mpfr_prec_t) xn * GMP_NUMB_BITS - MPFR_PREC(x);
37 xp = MPFR_MANT(x);
38 xp[0] = MP_LIMB_T_MAX << sh;
39 for (i = 1; i < xn; i++)
40 xp[i] = MP_LIMB_T_MAX;