1 | /* Split a double into fraction and mantissa, for hexadecimal printf. |
2 | Copyright (C) 2007, 2009-2019 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 <https://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. */ |
23 | extern double printf_frexp (double x, int *expptr); |
24 | |