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git.ipfire.org Git - thirdparty/glibc.git/blob - sysdeps/m68k/m680x0/fpu/s_frexp_template.c
1 /* Implement frexp for m68k.
2 Copyright (C) 1996-2018 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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 <http://www.gnu.org/licenses/>. */
22 M_DECL_FUNC (__frexp
) (FLOAT value
, int *expptr
)
24 FLOAT mantissa
, exponent
;
30 : "=dm" (fpsr
) : "f" (value
));
33 /* Not finite or zero. */
37 __asm ("fgetexp%.x %1, %0" : "=f" (exponent
) : "f" (value
));
38 iexponent
= (int) exponent
+ 1;
40 __asm ("fscale%.l %2, %0"
42 : "0" (value
), "dmi" (-iexponent
));
45 declare_mgen_alias (__frexp
, frexp
)