1 /* Internal libc stuff for floating point environment routines.
2 Copyright (C) 2004 Free Software Foundation, Inc.
3 Contributed by Aldy Hernandez <aldyh@redhat.com>, 2004
4 This file is part of the GNU C Library.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
22 #define _FENV_LIBC_H 1
26 extern int __feraiseexcept_internal (int __excepts);
28 /* Equivalent to fegetenv, but returns a fenv_t instead of taking a
30 #define fegetenv_register() \
31 ({ unsigned fscr; asm volatile ("mfspefscr %0" : "=r" (fscr)); fscr; })
33 /* Equivalent to fesetenv, but takes a fenv_t instead of a pointer. */
34 #define fesetenv_register(fscr) \
35 ({ asm volatile ("mtspefscr %0" : : "r" (fscr)); })
43 /* Definitions of all the SPEFSCR bit numbers. */
45 SPEFSCR_SOVH = 0x80000000,
46 SPEFSCR_OVH = 0x40000000,
47 SPEFSCR_FGH = 0x20000000,
48 SPEFSCR_FXH = 0x10000000,
49 SPEFSCR_FINVH = 0x08000000,
50 SPEFSCR_FDBZH = 0x04000000,
51 SPEFSCR_FUNFH = 0x02000000,
52 SPEFSCR_FOVFH = 0x01000000,
54 SPEFSCR_FINXS = 0x00200000,
55 SPEFSCR_FINVS = 0x00100000,
56 SPEFSCR_FDBZS = 0x00080000,
57 SPEFSCR_FUNFS = 0x00040000,
58 SPEFSCR_FOVFS = 0x00020000,
59 SPEFSCR_MODE = 0x00010000,
60 SPEFSCR_SOV = 0x00008000,
61 SPEFSCR_OV = 0x00004000,
62 SPEFSCR_FG = 0x00002000,
63 SPEFSCR_FX = 0x00001000,
64 SPEFSCR_FINV = 0x00000800,
65 SPEFSCR_FDBZ = 0x00000400,
66 SPEFSCR_FUNF = 0x00000200,
67 SPEFSCR_FOVF = 0x00000100,
69 SPEFSCR_FINXE = 0x00000040,
70 SPEFSCR_FINVE = 0x00000020,
71 SPEFSCR_FDBZE = 0x00000010,
72 SPEFSCR_FUNFE = 0x00000008,
73 SPEFSCR_FOVFE = 0x00000004,
74 SPEFSCR_FRMC = 0x00000003
77 #endif /* fenv_libc.h */