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/* ieee-utils/fp-sunos4.c
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*
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* Copyright (C) 1996, 1997, 1998, 1999, 2000, 2007 Brian Gough
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* 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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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <sys/ieeefp.h>
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#include <floatingpoint.h>
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#include <signal.h>
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#include <gsl/gsl_ieee_utils.h>
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#include <gsl/gsl_errno.h>
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int
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gsl_ieee_set_mode (int precision, int rounding, int exception_mask)
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{
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char * out ;
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switch (precision)
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{
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case GSL_IEEE_SINGLE_PRECISION:
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ieee_flags ("set", "precision", "single", out) ;
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break ;
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case GSL_IEEE_DOUBLE_PRECISION:
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ieee_flags ("set", "precision", "double", out) ;
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break ;
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case GSL_IEEE_EXTENDED_PRECISION:
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ieee_flags ("set", "precision", "extended", out) ;
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break ;
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default:
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ieee_flags ("set", "precision", "extended", out) ;
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}
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switch (rounding)
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{
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case GSL_IEEE_ROUND_TO_NEAREST:
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ieee_flags ("set", "direction", "nearest", out) ;
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break ;
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case GSL_IEEE_ROUND_DOWN:
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ieee_flags ("set", "direction", "negative", out) ;
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break ;
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case GSL_IEEE_ROUND_UP:
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ieee_flags ("set", "direction", "positive", out) ;
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break ;
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case GSL_IEEE_ROUND_TO_ZERO:
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ieee_flags ("set", "direction", "tozero", out) ;
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break ;
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default:
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ieee_flags ("set", "direction", "nearest", out) ;
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}
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if (exception_mask & GSL_IEEE_MASK_INVALID)
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{
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ieee_handler ("set", "invalid", SIGFPE_IGNORE) ;
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}
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else
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{
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ieee_handler ("set", "invalid", SIGFPE_ABORT) ;
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}
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if (exception_mask & GSL_IEEE_MASK_DENORMALIZED)
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{
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ieee_handler ("set", "denormalized", SIGFPE_IGNORE) ;
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}
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else
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{
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GSL_ERROR ("sunos4 does not support the denormalized operand exception. "
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"Use 'mask-denormalized' to work around this.",
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GSL_EUNSUP) ;
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}
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if (exception_mask & GSL_IEEE_MASK_DIVISION_BY_ZERO)
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{
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ieee_handler ("set", "division", SIGFPE_IGNORE) ;
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}
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else
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{
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ieee_handler ("set", "division", SIGFPE_ABORT) ;
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}
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if (exception_mask & GSL_IEEE_MASK_OVERFLOW)
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{
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ieee_handler ("set", "overflow", SIGFPE_IGNORE) ;
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}
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else
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{
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ieee_handler ("set", "overflow", SIGFPE_ABORT) ;
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}
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if (exception_mask & GSL_IEEE_MASK_UNDERFLOW)
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{
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ieee_handler ("set", "underflow", SIGFPE_IGNORE) ;
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}
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else
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{
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ieee_handler ("set", "underflow", SIGFPE_ABORT) ;
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}
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if (exception_mask & GSL_IEEE_TRAP_INEXACT)
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{
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ieee_handler ("set", "inexact", SIGFPE_ABORT) ;
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}
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else
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{
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ieee_handler ("set", "inexact", SIGFPE_IGNORE) ;
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}
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return GSL_SUCCESS ;
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}
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