1 /* Raise given exceptions.
2 Copyright (C) 1997-2013 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 #include <shlib-compat.h>
25 __feraiseexcept (int excepts)
28 double zero, one, max, min, pi;
30 0.0, 1.0, DBL_MAX, DBL_MIN, M_PI
34 /* Raise exceptions represented by EXPECTS. But we must raise only
35 one signal at a time. It is important the if the overflow/underflow
36 exception and the inexact exception are given at the same time,
37 the overflow/underflow exception follows the inexact exception. */
39 /* First: invalid exception. */
40 if ((FE_INVALID & excepts) != 0)
42 /* One example of an invalid operation is 0/0. */
43 __asm ("" : "=e" (d) : "0" (c.zero));
45 __asm __volatile ("" : : "e" (d));
48 /* Next: division by zero. */
49 if ((FE_DIVBYZERO & excepts) != 0)
51 __asm ("" : "=e" (d) : "0" (c.one));
53 __asm __volatile ("" : : "e" (d));
57 if ((FE_OVERFLOW & excepts) != 0)
59 __asm ("" : "=e" (d) : "0" (c.max));
61 __asm __volatile ("" : : "e" (d));
64 /* Next: underflow. */
65 if ((FE_UNDERFLOW & excepts) != 0)
67 __asm ("" : "=e" (d) : "0" (c.min));
69 __asm __volatile ("" : : "e" (d));
73 if ((FE_INEXACT & excepts) != 0)
75 __asm ("" : "=e" (d) : "0" (c.one));
77 __asm __volatile ("" : : "e" (d));
84 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
85 strong_alias (__feraiseexcept, __old_feraiseexcept)
86 compat_symbol (libm, __old_feraiseexcept, feraiseexcept, GLIBC_2_1);
89 libm_hidden_ver (__feraiseexcept, feraiseexcept)
90 versioned_symbol (libm, __feraiseexcept, feraiseexcept, GLIBC_2_2);