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Re: porting gsl to HPUX
- To: "M. Lavasani" <lavasani at connect dot org dot uk>
- Subject: Re: porting gsl to HPUX
- From: Brian Gough <bjg at network-theory dot co dot uk>
- Date: Wed, 14 Mar 2001 20:51:03 +0000 (GMT)
- Cc: gsl-discuss at sources dot redhat dot com
- References: <200103141134.f2EBY6221249@quioch.connect.liv.ac.uk>
M. Lavasani writes:
> I am trying to port gsl-0.7 to hpux-11.00.
> I noticed from your web site:
> http://sources.redhat.com/gsl
> "gsl" supports hpux platform!.
> Thats not true. It does support HPUX-10.20 but not HPUX-11.00.
> some of the header files in 10.20 are different from 11.00
> platform.
> HPUX -11.00 does not support FPU.
Thanks for the bug report. Can you try replacing ieee-utils/fp-hpux.c
with the (untested) file below. If it works I will add it to CVS as a
separate file.
regards
Brian Gough
/* ieee-utils/fp-hpux.c
*
* Copyright (C) 2001 Brian Gough
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#define _INCLUDE_HPUX_SOURCE
#include <math.h>
#include <stdio.h>
#include <fenv.h>
#include <gsl/gsl_ieee_utils.h>
#include <gsl/gsl_errno.h>
int
gsl_ieee_set_mode (int precision, int rounding, int exception_mask)
{
int mode;
switch (precision)
{
case GSL_IEEE_SINGLE_PRECISION:
GSL_ERROR ("HPUX PA-RISC only supports default precision rounding",
GSL_EUNSUP) ;
break ;
case GSL_IEEE_DOUBLE_PRECISION:
GSL_ERROR ("HPUX PA-RISC only supports default precision rounding",
GSL_EUNSUP) ;
break ;
case GSL_IEEE_EXTENDED_PRECISION:
GSL_ERROR ("HPUX PA-RISC only supports default precision rounding",
GSL_EUNSUP) ;
break ;
}
switch (rounding)
{
case GSL_IEEE_ROUND_TO_NEAREST:
fesetround (FE_TONEAREST) ;
break ;
case GSL_IEEE_ROUND_DOWN:
fesetround (FE_DOWNWARD) ;
break ;
case GSL_IEEE_ROUND_UP:
fesetround (FE_UPWARD) ;
break ;
case GSL_IEEE_ROUND_TO_ZERO:
fesetround (FE_TOWARDZERO) ;
break ;
default:
fesetround (FE_TONEAREST) ;
}
/* Turn on all the exceptions apart from 'inexact' */
mode = FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW ;
if (exception_mask & GSL_IEEE_MASK_INVALID)
mode &= ~ FE_INVALID ;
if (exception_mask & GSL_IEEE_MASK_DENORMALIZED)
{
/* do nothing */
}
else
{
GSL_ERROR ("HP-UX does not support the denormalized operand exception. "
"Use 'mask-denormalized' to work around this.",
GSL_EUNSUP) ;
}
if (exception_mask & GSL_IEEE_MASK_DIVISION_BY_ZERO)
mode &= ~ FE_DIVBYZERO ;
if (exception_mask & GSL_IEEE_MASK_OVERFLOW)
mode &= ~ FE_OVERFLOW ;
if (exception_mask & GSL_IEEE_MASK_UNDERFLOW)
mode &= ~ FE_UNDERFLOW ;
if (exception_mask & GSL_IEEE_TRAP_INEXACT)
{
mode |= FE_INEXACT ;
}
else
{
mode &= ~ FE_INEXACT ;
}
fesettrapenable (mode) ;
return GSL_SUCCESS ;
}