]>
git.ipfire.org Git - thirdparty/glibc.git/blob - sysdeps/m68k/m680x0/fpu/e_ilogb.c
1 /* Copyright (C) 1996-2024 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library 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 GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library. If not, see
16 <https://www.gnu.org/licenses/>. */
25 #define float_type double
28 #define CONCATX(a,b) __CONCAT(a,b)
29 #define s(name) CONCATX(name,SUFF)
30 #define m81(func) __m81_u(s(func))
33 s(__ieee754_ilogb
) (float_type x
)
38 x_cond
= __m81_test (x
);
39 /* We must return consistent values for zero and NaN. */
40 if (x_cond
& __M81_COND_ZERO
)
42 if (x_cond
& (__M81_COND_NAN
| __M81_COND_INF
))
45 __asm ("fgetexp%.x %1, %0" : "=f" (result
) : "f" (x
));