41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
66 lines
2.3 KiB
C
66 lines
2.3 KiB
C
/* Raise given exceptions.
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Copyright (C) 1997,99,2000,01 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <fenv_libc.h>
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#include <bp-sym.h>
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#undef feraiseexcept
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int
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__feraiseexcept (int excepts)
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{
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fenv_union_t u;
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/* Raise exceptions represented by EXCEPTS. It is the responsibility of
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the OS to ensure that if multiple exceptions occur they are fed back
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to this process in the proper way; this can happen in hardware,
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anyway (in particular, inexact with overflow or underflow). */
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/* Get the current state. */
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u.fenv = fegetenv_register ();
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/* Add the exceptions */
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u.l[1] = (u.l[1]
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| (excepts & FPSCR_STICKY_BITS)
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/* Turn FE_INVALID into FE_INVALID_SOFTWARE. */
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| (excepts >> ((31 - FPSCR_VX) - (31 - FPSCR_VXSOFT))
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& FE_INVALID_SOFTWARE));
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/* Store the new status word (along with the rest of the environment),
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triggering any appropriate exceptions. */
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fesetenv_register (u.fenv);
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if ((excepts & FE_INVALID)
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/* For some reason, some PowerPC chips (the 601, in particular)
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don't have FE_INVALID_SOFTWARE implemented. Detect this
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case and raise FE_INVALID_SNAN instead. */
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&& !fetestexcept (FE_INVALID))
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set_fpscr_bit (FPSCR_VXSNAN);
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/* Success. */
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return 0;
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}
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#include <shlib-compat.h>
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#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
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strong_alias (__feraiseexcept, __old_feraiseexcept)
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compat_symbol (libm, BP_SYM (__old_feraiseexcept), BP_SYM (feraiseexcept), GLIBC_2_1);
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#endif
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versioned_symbol (libm, BP_SYM (__feraiseexcept), BP_SYM (feraiseexcept), GLIBC_2_2);
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