view liboctave/oct-uname.cc @ 13756:6dfebfa334cb

allow negative data log plots with OpenGL+FLTK graphics (bug #34232) * mx-inlines.cc (mx_inline_any_positive): New function. * lo-mappers.h (xpositive_sign (double), xpositive_sign (float)): New functions. * fNDArray.h, fNDArray.cc (FloatNDArray::any_element_is_positive): New function. * fMatrix.h, fMatrix.cc (FloatMatrix::any_element_is_positive): New function. * dNDArray.h, dNDArray.cc (NDArray::any_element_is_positive): New function. * dMatrix.h, dMatrix.cc (Matrix::any_element_is_positive): New function. * graphics.h.in (log_scaler::do_neg_scale): New function. (log_scaler::scale (const Matrix&) const, log_scaler::scale (const NDArray&) const): Call do_neg_scale if no array elements are positive. * graphics.cc (axes::properties::get_axis_limits): Omit zero from positive values for log plots. Correctly widen range for all negative log plots.
author John W. Eaton <jwe@octave.org>
date Wed, 26 Oct 2011 14:19:54 -0400
parents fd0a3ac60b0e
children 72c96de7a403
line wrap: on
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/*

Copyright (C) 2005-2011 John W. Eaton

This file is part of Octave.

Octave 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 3 of the License, or (at your
option) any later version.

Octave 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 Octave; see the file COPYING.  If not, see
<http://www.gnu.org/licenses/>.

*/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <cerrno>
#include <cstring>

#ifdef HAVE_SYS_UTSNAME_H
#include <sys/utsname.h>
#endif

#include "oct-uname.h"

void
octave_uname::init (void)
{
#if defined (HAVE_UNAME) && defined (HAVE_SYS_UTSNAME_H)
  struct utsname unm;

  err = ::uname (&unm);

  if (err < 0)
    msg = gnulib::strerror (errno);
  else
    {
      utsname_sysname = unm.sysname;
      utsname_nodename = unm.nodename;
      utsname_release = unm.release;
      utsname_version = unm.version;
      utsname_machine = unm.machine;
    }
#endif
}