Mercurial > octave
view liboctave/util/lo-ieee.cc @ 29426:7c78e4589466
maint: Remove support for old_NA definition (pre-R compatible value).
* oct-stream.cc (is_old_NA<T>, is_old_NA<double>, replace_old_NA<T>, replace_old_NA<double>):
Remove templated functions.
* oct-stream.cc (convert_and_capy): Remove check for is_old_NA() that calls replace_old_NA().
* data-conv.cc (read_doubles): Remove code to inspect each double value and
call __lo_ieee_replace_old_NA().
* lo-ieee.h (__lo_ieee_is_old_NA, __lo_ieee_replace_old_NA): Delete forward declarations.
* lo-ieee.cc (__lo_ieee_is_old_NA, __lo_ieee_replace_old_NA): Delete functions.
author | Rik <rik@octave.org> |
---|---|
date | Wed, 10 Mar 2021 16:35:59 -0800 |
parents | 0a5b15007766 |
children | 3f598ae945f2 |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 1996-2021 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/>. // //////////////////////////////////////////////////////////////////////// #if defined (HAVE_CONFIG_H) # include "config.h" #endif #include <cmath> #include <cstdlib> #include <limits> #include "lo-error.h" #include "lo-ieee.h" #include "mach-info.h" static double lo_inf; static double lo_nan; static double lo_na; static float lo_float_inf; static float lo_float_nan; static float lo_float_na; static int lo_ieee_hw; static int lo_ieee_lw; int __lo_ieee_is_NA (double x) { lo_ieee_double t; t.value = x; return (__lo_ieee_isnan (x) && t.word[lo_ieee_hw] == LO_IEEE_NA_HW && t.word[lo_ieee_lw] == LO_IEEE_NA_LW) ? 1 : 0; } double lo_ieee_inf_value (void) { octave_ieee_init (); return lo_inf; } double lo_ieee_na_value (void) { octave_ieee_init (); return lo_na; } double lo_ieee_nan_value (void) { octave_ieee_init (); return lo_nan; } int __lo_ieee_float_is_NA (float x) { lo_ieee_float t; t.value = x; return (__lo_ieee_float_isnan (x) && (t.word == LO_IEEE_NA_FLOAT)) ? 1 : 0; } float lo_ieee_float_inf_value (void) { octave_ieee_init (); return lo_float_inf; } float lo_ieee_float_na_value (void) { octave_ieee_init (); return lo_float_na; } float lo_ieee_float_nan_value (void) { octave_ieee_init (); return lo_float_nan; } void octave_ieee_init (void) { static bool initialized = false; if (! initialized) { octave::mach_info::float_format ff = octave::mach_info::native_float_format (); switch (ff) { case octave::mach_info::flt_fmt_ieee_big_endian: case octave::mach_info::flt_fmt_ieee_little_endian: { lo_nan = std::numeric_limits<double>::quiet_NaN (); lo_inf = std::numeric_limits<double>::infinity (); lo_float_nan = std::numeric_limits<float>::quiet_NaN (); lo_float_inf = std::numeric_limits<float>::infinity (); // The following is patterned after code in R. if (ff == octave::mach_info::flt_fmt_ieee_big_endian) { lo_ieee_hw = 0; lo_ieee_lw = 1; } else { lo_ieee_hw = 1; lo_ieee_lw = 0; } lo_ieee_double t; t.word[lo_ieee_hw] = LO_IEEE_NA_HW; t.word[lo_ieee_lw] = LO_IEEE_NA_LW; lo_na = t.value; lo_ieee_float tf; tf.word = LO_IEEE_NA_FLOAT; lo_float_na = tf.value; } break; default: // If the format is unknown, then you will probably not have a // useful system, so we will abort here. Anyone wishing to // experiment with building Octave on a system without IEEE // floating point should be capable of removing this check and // the configure test. // // If the error handler returns, then we'll abort. (*current_liboctave_error_handler) ("lo_ieee_init: floating point format is not IEEE! Maybe DLAMCH is miscompiled, or you are using some strange system without IEEE floating point math?"); abort (); } initialized = true; } }