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fenv_private.h includes unused functions, magic macro constants, and some replicated common code fragments. Remove unused functions, replace magic constants with constants from fenv_libc.h, and refactor replicated code. Suggested-by: Paul E. Murphy <murphyp@linux.ibm.com> Reviewed-By: Paul E Murphy <murphyp@linux.ibm.com>
56 lines
1.9 KiB
C
56 lines
1.9 KiB
C
/* Install given floating-point environment and raise exceptions.
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Copyright (C) 1997-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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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, see
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<https://www.gnu.org/licenses/>. */
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#include <fenv_libc.h>
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#include <fpu_control.h>
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int
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__feupdateenv (const fenv_t *envp)
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{
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fenv_union_t old, new;
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/* Save the currently set exceptions. */
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new.fenv = *envp;
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old.fenv = fegetenv_register ();
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/* Restore rounding mode and exception enable from *envp and merge
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exceptions. Leave fraction rounded/inexact and FP result/CC bits
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unchanged. */
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new.l = (old.l & 0xffffffff1fffff00LL) | (new.l & 0x1ff80fff);
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__TEST_AND_EXIT_NON_STOP (old.l, new.l);
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__TEST_AND_ENTER_NON_STOP (old.l, new.l);
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/* Atomically enable and raise (if appropriate) exceptions set in `new'. */
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fesetenv_register (new.fenv);
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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 (__feupdateenv, __old_feupdateenv)
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compat_symbol (libm, __old_feupdateenv, feupdateenv, GLIBC_2_1);
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#endif
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libm_hidden_def (__feupdateenv)
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libm_hidden_ver (__feupdateenv, feupdateenv)
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versioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2);
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