1 | /* Return the mantissa of a floating-point number. |
2 | Copyright (C) 2018-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | /* |
20 | * significand(x) computes just |
21 | * scalb(x, (FLOAT) - ilogb(x)), |
22 | * for exercising the fraction-part(F) IEEE 754-1985 test vector. |
23 | */ |
24 | |
25 | #include <math.h> |
26 | #include <math_private.h> |
27 | |
28 | FLOAT |
29 | M_DECL_FUNC (__significand) (FLOAT x) |
30 | { |
31 | return M_SUF (__ieee754_scalb) (x,(FLOAT) - M_SUF (__ilogb) (x)); |
32 | } |
33 | declare_mgen_alias (__significand, significand) |
34 | |