Mercurial > octave-libtiff
view libinterp/corefcn/rcond.cc @ 29958:32c3a5805893
move DEFUN and DEFMETHOD functions inside octave namespace
* mk-opts.pl: Surround emitted function definitions with
OCTAVE_NAMESPACE_BEGIN and OCTAVE_NAMESPACE_END tags.
* mk-builtins.pl: Surround emitted function declarations with
OCTAVE_NAMESPACE_BEGIN and OCTAVE_NAMESPACE_END tags. Emit deprecated
global inline functions.
* __betainc__.cc, __contourc__.cc, __dsearchn__.cc, __eigs__.cc,
__expint__.cc, __ftp__.cc, __gammainc__.cc, __ichol__.cc, __ilu__.cc,
__lin_interpn__.cc, __magick_read__.cc, __pchip_deriv__.cc, __qp__.cc,
amd.cc, balance.cc, besselj.cc, bitfcns.cc, bsxfun.cc, call-stack.cc,
ccolamd.cc, cellfun.cc, chol.cc, colamd.cc, colloc.cc, conv2.cc,
daspk.cc, dasrt.cc, dassl.cc, data.cc, debug.cc, defaults.cc,
defun.cc, det.cc, dirfns.cc, display.cc, dlmread.cc, dmperm.cc,
dot.cc, eig.cc, ellipj.cc, environment.cc, error.cc, event-manager.cc,
fcn-info.cc, fft.cc, fft2.cc, fftn.cc, file-io.cc, filter.cc, find.cc,
gcd.cc, getgrent.cc, getpwent.cc, getrusage.cc, givens.cc,
graphics.cc, gsvd.cc, hash.cc, help.cc, hess.cc, hex2num.cc, input.cc,
interpreter.cc, inv.cc, jsondecode.cc, jsonencode.cc, kron.cc,
load-path.cc, load-save.cc, lookup.cc, ls-oct-text.cc, lsode.cc,
lu.cc, mappers.cc, matrix_type.cc, max.cc, mgorth.cc, nproc.cc,
oct-hist.cc, ordqz.cc, ordschur.cc, pager.cc, pinv.cc, pr-flt-fmt.cc,
pr-output.cc, psi.cc, qr.cc, quad.cc, quadcc.cc, qz.cc, rand.cc,
rcond.cc, regexp.cc, schur.cc, settings.cc, sighandlers.cc, sparse.cc,
spparms.cc, sqrtm.cc, stream-euler.cc, strfind.cc, strfns.cc,
sub2ind.cc, svd.cc, sylvester.cc, symbfact.cc, symrcm.cc, symtab.cc,
syscalls.cc, sysdep.cc, time.cc, toplev.cc, tril.cc, tsearch.cc,
typecast.cc, urlwrite.cc, utils.cc, variables.cc, __delaunayn__.cc,
__fltk_uigetfile__.cc, __glpk__.cc, __init_gnuplot__.cc, __ode15__.cc,
__voronoi__.cc, audiodevinfo.cc, audioread.cc, convhulln.cc, fftw.cc,
gzip.cc, ov-base.cc, ov-bool-mat.cc, ov-cell.cc, ov-class.cc,
ov-classdef.cc, ov-fcn-handle.cc, ov-java.cc, ov-null-mat.cc,
ov-oncleanup.cc, ov-struct.cc, ov-typeinfo.cc, ov-usr-fcn.cc, ov.cc,
octave.cc, lex.ll, oct-parse.yy, profiler.cc, pt-eval.cc: Surround
DEFUN and DEFMETHOD function defnitions with OCTAVE_NAMESPACE_BEGIN
and OCTAVE_NAMESPACE_END tags.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Fri, 13 Aug 2021 21:53:51 -0400 |
parents | 0a5b15007766 |
children | 796f54d4ddbf |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 2008-2021 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 "defun.h" #include "error.h" #include "errwarn.h" #include "ovl.h" #include "utils.h" OCTAVE_NAMESPACE_BEGIN DEFUN (rcond, args, , doc: /* -*- texinfo -*- @deftypefn {} {@var{c} =} rcond (@var{A}) Compute the 1-norm estimate of the reciprocal condition number as returned by @sc{lapack}. If the matrix is well-conditioned then @var{c} will be near 1 and if the matrix is poorly conditioned it will be close to 0. The matrix @var{A} must not be sparse. If the matrix is sparse then @code{condest (@var{A})} or @code{rcond (full (@var{A}))} should be used instead. @seealso{cond, condest} @end deftypefn */) { if (args.length () != 1) print_usage (); octave_value retval; if (args(0).issparse ()) error ("rcond: for sparse matrices use 'rcond (full (a))' or 'condest (a)' instead"); if (args(0).is_single_type ()) { if (args(0).iscomplex ()) { FloatComplexMatrix m = args(0).float_complex_matrix_value (); MatrixType mattyp; retval = m.rcond (mattyp); args(0).matrix_type (mattyp); } else { FloatMatrix m = args(0).float_matrix_value (); MatrixType mattyp; retval = m.rcond (mattyp); args(0).matrix_type (mattyp); } } else if (args(0).iscomplex ()) { ComplexMatrix m = args(0).complex_matrix_value (); MatrixType mattyp; retval = m.rcond (mattyp); args(0).matrix_type (mattyp); } else { Matrix m = args(0).matrix_value (); MatrixType mattyp; retval = m.rcond (mattyp); args(0).matrix_type (mattyp); } return retval; } /* %!assert (rcond (eye (2)), 1) %!assert (rcond (ones (2)), 0) %!assert (rcond ([1 1; 2 1]), 1/9) %!assert (rcond (magic (4)), 0, eps) %!shared x, sx %! x = [-5.25, -2.25; -2.25, 1] * eps () + ones (2) / 2; %! sx = [-5.25, -2.25; -2.25, 1] * eps ("single") + ones (2) / 2; %!assert (rcond (x) < eps ()) %!assert (rcond (sx) < eps ('single')) %!assert (rcond (x*i) < eps ()) %!assert (rcond (sx*i) < eps ('single')) */ OCTAVE_NAMESPACE_END