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/* mpfr_set_machine_rnd_mode -- set the rounding mode for machine floats
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Copyright 1999, 2001, 2002, 2004 Free Software Foundation, Inc.
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This file is part of the MPFR Library.
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The MPFR Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The MPFR Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the MPFR Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA. */
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#ifdef MPFR_HAVE_FESETROUND
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/* sets the machine rounding mode to the value rnd_mode
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Doing an exit(0) when an FE mode is not available is a nasty hack. It's
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done to let the test programs stop gracefully when they attempt an
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unsupported mode. This happens for instance on ARM systems, which lack
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Applications which have been using this function are not harmed by this
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hack. In the past the code didn't even compile on systems with an
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incomplete set of FE choices. Applications won't want to be using this
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anyway, it's been moved to the test suite in newer mpfr. */
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mpfr_set_machine_rnd_mode (mp_rnd_t rnd_mode)
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fesetround(FE_TONEAREST);
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fesetround(FE_TOWARDZERO);
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fesetround(FE_UPWARD);
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fesetround(FE_DOWNWARD);
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fprintf(stderr, "invalid rounding mode\n");
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printf ("mpfr_set_machine_rnd_mode(): rounding mode %d not available, exiting\n", rnd_mode);