Mercurial > octave-nkf
view liboctave/system/mach-info.cc @ 17415:3856298f1ff8
eliminate unimplemented vax and cray floating point formats
* mach-info.h
* test/io.tst: Delete vaxd, vaxg, and cray from list of architectures
in fopen test.
# HG changeset patch
# User John W. Eaton <jwe@octave.org>
# Date 1379028062 14400
# Thu Sep 12 19:21:02 2013 -0400
# Node ID ea2763020ac1aa15ad0d43d787b61ff3b8469209
# Parent e89e86e1a5518c11058930fec5e907e60e31251b
eliminate unimplemented vax and cray floating point formats
* mach-info.h (oct_mach_info::float_format): Delete flt_fmt_vaxd,
flt_fmt_vaxg, and flt_fmt_cray enum values.
* ls-mat4.cc (float_format_to_mopt_digit, mopt_digit_to_float_format):
Delete cases for vaxd, vaxg, and cray floating point formats.
* lo-ieee.cc (octave_ieee_init): Likewise.
* mach-info.cc (get_float_format,
oct_mach_info::string_to_float_format,
oct_mach_info::float_format_as_string): Likewise.
* oct-stream.cc: Delete explicit template instantiation for do_write.
(octave_stream::write, do_read): Delete checks for vaxd and vaxg
floating point formats.
* pr-output.cc (pr_any_float): Don't check for cray or unknonwn float
formats.
* data-conv.cc (VAX_D_double_to_IEEE_little_double,
VAX_G_double_to_IEEE_little_double, Cray_to_IEEE_little_double,
IEEE_big_float_to_IEEE_little_float, VAX_D_float_to_IEEE_little_float,
VAX_G_float_to_IEEE_little_float, Cray_to_IEEE_little_float,
IEEE_little_double_to_IEEE_big_double,
VAX_D_double_to_IEEE_big_double, VAX_G_double_to_IEEE_big_double,
Cray_to_IEEE_big_double, IEEE_little_float_to_IEEE_big_float,
VAX_D_float_to_IEEE_big_float, VAX_G_float_to_IEEE_big_float,
Cray_to_IEEE_big_float, IEEE_little_double_to_VAX_D_double,
IEEE_big_double_to_VAX_D_double, VAX_G_double_to_VAX_D_double,
Cray_to_VAX_D_double, IEEE_little_float_to_VAX_D_float,
IEEE_big_float_to_VAX_D_float, VAX_G_float_to_VAX_D_float,
Cray_to_VAX_D_float, IEEE_little_double_to_VAX_G_double,
IEEE_big_double_to_VAX_G_double, VAX_D_double_to_VAX_G_double,
Cray_to_VAX_G_double, IEEE_little_float_to_VAX_G_float,
IEEE_big_float_to_VAX_G_float, VAX_D_float_to_VAX_G_float,
Cray_to_VAX_G_float): Delete.
(do_double_format_conversion): Eliminate unimplemented vaxd, vaxg, and
cray conversions.
* file-io.cc (Ffopen, Ffread): Fix doc strings.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Thu, 12 Sep 2013 19:21:02 -0400 |
parents | 648dabbb4c6b |
children | d63878346099 |
line wrap: on
line source
/* Copyright (C) 1996-2012 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 "f77-fcn.h" #include "lo-error.h" #include "mach-info.h" #include "singleton-cleanup.h" extern "C" { double F77_FUNC (d1mach, D1MACH) (const octave_idx_type&); } oct_mach_info *oct_mach_info::instance = 0; union equiv { double d; int i[2]; }; struct float_params { oct_mach_info::float_format fp_fmt; equiv fp_par[4]; }; #define INIT_FLT_PAR(fp, fmt, sm1, sm2, lrg1, lrg2, rt1, rt2, dv1, dv2) \ do \ { \ fp.fp_fmt = (fmt); \ fp.fp_par[0].i[0] = (sm1); fp.fp_par[0].i[1] = (sm2); \ fp.fp_par[1].i[0] = (lrg1); fp.fp_par[1].i[1] = (lrg2); \ fp.fp_par[2].i[0] = (rt1); fp.fp_par[2].i[1] = (rt2); \ fp.fp_par[3].i[0] = (dv1); fp.fp_par[3].i[1] = (dv2); \ } \ while (0) static int equiv_compare (const equiv *std, const equiv *v, int len) { int i; for (i = 0; i < len; i++) if (v[i].i[0] != std[i].i[0] || v[i].i[1] != std[i].i[1]) return 0; return 1; } static oct_mach_info::float_format get_float_format (void) { oct_mach_info::float_format retval = oct_mach_info::flt_fmt_unknown; float_params fp[5]; INIT_FLT_PAR (fp[0], oct_mach_info::flt_fmt_ieee_big_endian, 1048576, 0, 2146435071, -1, 1017118720, 0, 1018167296, 0); INIT_FLT_PAR (fp[1], oct_mach_info::flt_fmt_ieee_little_endian, 0, 1048576, -1, 2146435071, 0, 1017118720, 0, 1018167296); INIT_FLT_PAR (fp[4], oct_mach_info::flt_fmt_unknown, 0, 0, 0, 0, 0, 0, 0, 0); equiv mach_fp_par[4]; mach_fp_par[0].d = F77_FUNC (d1mach, D1MACH) (1); mach_fp_par[1].d = F77_FUNC (d1mach, D1MACH) (2); mach_fp_par[2].d = F77_FUNC (d1mach, D1MACH) (3); mach_fp_par[3].d = F77_FUNC (d1mach, D1MACH) (4); int i = 0; do { if (equiv_compare (fp[i].fp_par, mach_fp_par, 4)) { retval = fp[i].fp_fmt; break; } } while (fp[++i].fp_fmt != oct_mach_info::flt_fmt_unknown); return retval; } static bool ten_little_endians (void) { // Are we little or big endian? From Harbison & Steele. union { long l; char c[sizeof (long)]; } u; u.l = 1; return (u.c[sizeof (long) - 1] == 1); } oct_mach_info::oct_mach_info (void) : native_float_fmt (get_float_format ()), big_chief (ten_little_endians ()) { } bool oct_mach_info::instance_ok (void) { bool retval = true; if (! instance) { instance = new oct_mach_info (); if (instance) singleton_cleanup_list::add (cleanup_instance); } if (! instance) { (*current_liboctave_error_handler) ("unable to create command history object!"); retval = false; } return retval; } oct_mach_info::float_format oct_mach_info::native_float_format (void) { return (instance_ok ()) ? instance->native_float_fmt : oct_mach_info::flt_fmt_unknown; } bool oct_mach_info::words_big_endian (void) { return (instance_ok ()) ? instance->big_chief : false; } bool oct_mach_info::words_little_endian (void) { return (instance_ok ()) ? (! instance->big_chief) : false; } oct_mach_info::float_format oct_mach_info::string_to_float_format (const std::string& s) { oct_mach_info::float_format retval = oct_mach_info::flt_fmt_unknown; if (s == "native" || s == "n") retval = oct_mach_info::native_float_format (); else if (s == "ieee-be" || s == "b") retval = oct_mach_info::flt_fmt_ieee_big_endian; else if (s == "ieee-le" || s == "l") retval = oct_mach_info::flt_fmt_ieee_little_endian; else if (s == "unknown") retval = oct_mach_info::flt_fmt_unknown; else (*current_liboctave_error_handler) ("invalid architecture type specified"); return retval; } std::string oct_mach_info::float_format_as_string (float_format flt_fmt) { std::string retval = "unknown"; switch (flt_fmt) { case flt_fmt_ieee_big_endian: retval = "ieee-be"; break; case flt_fmt_ieee_little_endian: retval = "ieee-le"; break; default: break; } return retval; }