1/* Split a double into fraction and mantissa, for hexadecimal printf.
2   Copyright (C) 2007, 2009-2012 Free Software Foundation, Inc.
3
4   This program is free software: you can redistribute it and/or modify
5   it under the terms of the GNU General Public License as published by
6   the Free Software Foundation; either version 3 of the License, or
7   (at your option) any later version.
8
9   This program is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12   GNU General Public License for more details.
13
14   You should have received a copy of the GNU General Public License
15   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
16
17/* Write a finite, positive number x as
18     x = mantissa * 2^exp
19   where exp >= DBL_MIN_EXP - 1,
20         mantissa < 2.0,
21         if x is not a denormalized number then mantissa >= 1.0.
22   Store exp in *EXPPTR and return mantissa.  */
23extern double printf_frexp (double x, int *expptr);
24