1 /* Inline floating-point environment handling functions for powerpc.
2 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2006
3 Free Software Foundation, Inc.
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
23 #if defined __GNUC__ && !defined _SOFT_FLOAT && !defined __NO_MATH_INLINES
25 /* Inline definition for fegetround. */
26 # define fegetround() \
27 (__extension__ ({ int __fegetround_result; \
28 __asm__ __volatile__ \
29 ("mcrfs 7,7 ; mfcr %0" \
30 : "=r"(__fegetround_result) : : "cr7"); \
31 __fegetround_result & 3; }))
33 /* The weird 'i#*X' constraints on the following suppress a gcc
34 warning when __excepts is not a constant. Otherwise, they mean the
35 same as just plain 'i'. */
37 /* Inline definition for feraiseexcept. */
38 # define feraiseexcept(__excepts) \
39 ((__builtin_constant_p (__excepts) \
40 && ((__excepts) & ((__excepts)-1)) == 0 \
41 && (__excepts) != FE_INVALID) \
43 ? (__extension__ ({ __asm__ __volatile__ \
45 : : "i#*X"(__builtin_ffs (__excepts))); \
48 : (feraiseexcept) (__excepts))
50 /* Inline definition for feclearexcept. */
51 # define feclearexcept(__excepts) \
52 ((__builtin_constant_p (__excepts) \
53 && ((__excepts) & ((__excepts)-1)) == 0 \
54 && (__excepts) != FE_INVALID) \
56 ? (__extension__ ({ __asm__ __volatile__ \
58 : : "i#*X"(__builtin_ffs (__excepts))); \
61 : (feclearexcept) (__excepts))
63 #endif /* __GNUC__ && !_SOFT_FLOAT */