Mercurial > octave
view liboctave/system/mach-info.cc @ 21136:7cac4e7458f2
maint: clean up code around calls to current_liboctave_error_handler.
Remove statements after call to handler that are no longer reachable.
Place input validation first and immediately call handler if necessary.
Change if/error_handler/else to if/error_handler and re-indent code.
* Array-util.cc, Array.cc, CColVector.cc, CDiagMatrix.cc, CMatrix.cc,
CNDArray.cc, CRowVector.cc, CSparse.cc, DiagArray2.cc, MArray.cc,
PermMatrix.cc, Sparse.cc, Sparse.h, chMatrix.cc, chNDArray.cc, dColVector.cc,
dDiagMatrix.cc, dMatrix.cc, dNDArray.cc, dRowVector.cc, dSparse.cc,
fCColVector.cc, fCDiagMatrix.cc, fCMatrix.cc, fCNDArray.cc, fCRowVector.cc,
fColVector.cc, fDiagMatrix.cc, fMatrix.cc, fNDArray.cc, fRowVector.cc,
idx-vector.cc, CmplxAEPBAL.cc, CmplxCHOL.cc, CmplxGEPBAL.cc, CmplxHESS.cc,
CmplxLU.cc, CmplxQR.cc, CmplxSCHUR.cc, CmplxSVD.cc, DASPK.cc, EIG.cc, LSODE.cc,
Quad.cc, SparseCmplxCHOL.cc, SparseCmplxLU.cc, SparseCmplxQR.cc, SparseQR.cc,
SparsedbleCHOL.cc, SparsedbleLU.cc, base-lu.cc, bsxfun-defs.cc, dbleAEPBAL.cc,
dbleCHOL.cc, dbleGEPBAL.cc, dbleHESS.cc, dbleLU.cc, dbleQR.cc, dbleSCHUR.cc,
dbleSVD.cc, eigs-base.cc, fCmplxAEPBAL.cc, fCmplxCHOL.cc, fCmplxLU.cc,
fCmplxQR.cc, fCmplxSCHUR.cc, fEIG.cc, floatAEPBAL.cc, floatCHOL.cc,
floatGEPBAL.cc, floatHESS.cc, floatLU.cc, floatQR.cc, floatSCHUR.cc,
floatSVD.cc, lo-specfun.cc, oct-fftw.cc, oct-rand.cc, oct-spparms.cc,
sparse-base-chol.cc, sparse-dmsolve.cc, file-ops.cc, lo-sysdep.cc,
mach-info.cc, oct-env.cc, oct-syscalls.cc, cmd-edit.cc, cmd-hist.cc,
data-conv.cc, lo-ieee.cc, lo-regexp.cc, oct-base64.cc, oct-shlib.cc,
pathsearch.cc, singleton-cleanup.cc, sparse-util.cc, unwind-prot.cc:
Remove statements after call to handler that are no longer reachable.
Place input validation first and immediately call handler if necessary.
Change if/error_handler/else to if/error_handler and re-indent code.
author | Rik <rik@octave.org> |
---|---|
date | Sat, 23 Jan 2016 13:52:03 -0800 |
parents | 4197fc428c7d |
children | f7121e111991 |
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/* Copyright (C) 1996-2015 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!"); 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; }