]>
git.ipfire.org Git - thirdparty/glibc.git/blob - sysdeps/sparc/sparc64/qp_util.c
99926583c9e525ae35ac2ae230fbdb6ce23a2dfa
1 /* Software floating-point emulation.
2 Helper routine for _Qp_* routines.
3 Simulate exceptions using double arithmetics.
4 Copyright (C) 1999-2019 Free Software Foundation, Inc.
5 This file is part of the GNU C Library.
6 Contributed by Jakub Jelinek (jj@ultra.linux.cz).
8 The GNU C Library is free software; you can redistribute it and/or
9 modify it under the terms of the GNU Lesser General Public
10 License as published by the Free Software Foundation; either
11 version 2.1 of the License, or (at your option) any later version.
13 The GNU C Library is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public
19 License along with the GNU C Library; if not, see
20 <http://www.gnu.org/licenses/>. */
27 void __Qp_handle_exceptions(int exceptions
)
29 if (exceptions
& FP_EX_INVALID
)
32 __asm__
__volatile__ ("fdivs %0, %0, %0" : "+f" (f
));
34 if (exceptions
& FP_EX_DIVZERO
)
36 float f
= 1.0, g
= 0.0;
37 __asm__
__volatile__ ("fdivs %0, %1, %0"
41 if (exceptions
& FP_EX_OVERFLOW
)
44 __asm__
__volatile__("fmuls %0, %0, %0" : "+f" (f
));
45 exceptions
&= ~FP_EX_INEXACT
;
47 if (exceptions
& FP_EX_UNDERFLOW
)
50 __asm__
__volatile__("fmuls %0, %0, %0" : "+f" (f
));
51 exceptions
&= ~FP_EX_INEXACT
;
53 if (exceptions
& FP_EX_INEXACT
)
55 double d
= 1.0, e
= M_PI
;
56 __asm__
__volatile__ ("fdivd %0, %1, %0"