1 /* Emulation for ldexpl.
2 Contributed by Paolo Bonzini
4 Copyright 2002, 2003 Free Software Foundation, Inc.
6 This file is part of gnulib.
8 gnulib is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published
10 by the Free Software Foundation; either version 2.1, or (at your option)
13 gnulib is distributed in the hope that it will be useful, but WITHOUT
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 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 gnulib; see the file COPYING.LIB. If not, write to the Free
20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
30 ldexpl(long double x, int exp)
35 /* Check for zero, nan and infinity. */
36 if (x != x || x + x == x )
47 for (bit = 1; bit <= exp; bit <<= 1, factor *= factor)
60 for (y = 0; y < 29; y++)
61 printf ("%5d %.16Lg %.16Lg\n", y, ldexpl(0.8L, y), ldexpl(0.8L, -y) * ldexpl(0.8L, y));