view liboctave/wrappers/intprops-wrappers.h @ 28849:8b0675c2cfe0

Add functions to check for integer overflow on multiplication (bug #59094). * liboctave/wrappers/intprops-wrappers.c, intprops-wrappers.h: New files with functions to wrap around gnulib macros. * liboctave/wrappers/module.mk: Add new files to lists. * bootstrap.conf: Add gnulib module "intprops". * liboctave/util/lo-utils.cc, lo-utils.h (int_multiply_overflow): Add new (overloaded) functions to check for integer overflow on multiplication. * libinterp/dldfcn/__ode15__.cc (IDA::set_up): Check if multiplication would overflow.
author Markus Mützel <markus.muetzel@gmx.de>
date Sat, 19 Sep 2020 12:09:57 +0200
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children 4e196fbb28a5
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////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2020 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// 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
// <https://www.gnu.org/licenses/>.
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////////////////////////////////////////////////////////////////////////

#if ! defined (octave_localcharset_wrapper_h)
#define octave_localcharset_wrapper_h 1

#include "octave-config.h"

#if defined __cplusplus
extern "C" {
#endif

// These functions return 1 if the operation between the input arguments would
// overflow.

extern int octave_i_multiply_overflow_wrapper (int a, int b);

extern int octave_li_multiply_overflow_wrapper (long int a, long int b);

#  if defined (OCTAVE_HAVE_LONG_LONG_INT)
extern int octave_lli_multiply_overflow_wrapper (long long int a,
                                                 long long int b);
#  endif

extern int octave_ui_multiply_overflow_wrapper (unsigned int a,
                                                unsigned int b);

extern int octave_uli_multiply_overflow_wrapper (unsigned long int a,
                                                 unsigned long int b);

#  if defined (OCTAVE_HAVE_UNSIGNED_LONG_LONG_INT)
extern int octave_ulli_multiply_overflow_wrapper (unsigned long long int a,
                                                  unsigned long long int b);
#  endif

#if defined __cplusplus
}
#endif

#endif