Mercurial > octave
view liboctave/util/lo-ieee.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 <cfloat> #include <cmath> #include <cstdlib> #include <limits> 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; #include "lo-error.h" #include "lo-ieee.h" #include "lo-math.h" #include "mach-info.h" int __lo_ieee_isnan (double x) { #if defined (HAVE_CMATH_ISNAN) return std::isnan (x); #else // Gnulib provides. return isnan (x); #endif } int __lo_ieee_finite (double x) { #if defined (HAVE_CMATH_ISFINITE) return std::isfinite (x); #else // Gnulib provides. return finite (x); #endif } int __lo_ieee_isinf (double x) { #if defined (HAVE_CMATH_ISINF) return std::isinf (x); #else // Gnulib provides. return isinf (x); #endif } 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; } int __lo_ieee_is_old_NA (double x) { lo_ieee_double t; t.value = x; return (__lo_ieee_isnan (x) && t.word[lo_ieee_lw] == LO_IEEE_NA_LW_OLD && t.word[lo_ieee_hw] == LO_IEEE_NA_HW_OLD) ? 1 : 0; } double __lo_ieee_replace_old_NA (double x) { if (__lo_ieee_is_old_NA (x)) return lo_ieee_na_value (); else return x; } 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_signbit (double x) { #if defined (HAVE_CMATH_SIGNBIT) return std::signbit (x); #else // Gnulib provides. return signbit (x); #endif } int __lo_ieee_float_isnan (float x) { #if defined (HAVE_CMATH_ISNAN) return std::isnan (x); #else // Gnulib provides. return isnan (x); #endif } int __lo_ieee_float_finite (float x) { #if defined (HAVE_CMATH_ISFINITE) return std::isfinite (x) != 0 && ! __lo_ieee_float_isnan (x); #else // Gnulib provides. return finite (x); #endif } int __lo_ieee_float_isinf (float x) { #if defined (HAVE_CMATH_ISINF) return std::isinf (x); #else // Gnulib provides. return isinf (x); #endif } 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; } int __lo_ieee_float_signbit (float x) { #if defined (HAVE_CMATH_SIGNBIT) return std::signbit (x); #else // Gnulib provides. return signbit (x); #endif } void octave_ieee_init (void) { bool initialized = false; if (! initialized) { oct_mach_info::float_format ff = oct_mach_info::native_float_format (); switch (ff) { case oct_mach_info::flt_fmt_ieee_big_endian: case oct_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 == oct_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. // FIXME: Should this be a warning so that abort is reached? (*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; } }