Mercurial > octave
view libinterp/corefcn/rcond.cc @ 32660:f53ac65ffba6
maint: New method rwdata() as clearer alternative to fortran_vec().
* etc/NEWS.10.md: Announce new method and recommend its use in future code.
* doc/interpreter/external.txi: Update Octave manual to use rwdata.
* liboctave/array/Array.h (rwdata): New function prototype.
* liboctave/array/Array.h (fortran_vec): Make inline function that calls rwdata().
* liboctave/array/DiagArray2.h (rwdata): New function prototype.
* liboctave/array/DiagArray2.h (fortran_vec): Make inline function that calls rwdata().
* examples/code/fortrandemo.cc, libgui/graphics/QtHandlesUtils.cc,
libinterp/corefcn/Cell.cc, libinterp/corefcn/__dsearchn__.cc,
libinterp/corefcn/__ichol__.cc, libinterp/corefcn/__ilu__.cc,
libinterp/corefcn/__lin_interpn__.cc, libinterp/corefcn/__magick_read__.cc,
libinterp/corefcn/__pchip_deriv__.cc, libinterp/corefcn/amd.cc,
libinterp/corefcn/data.cc, libinterp/corefcn/dot.cc,
libinterp/corefcn/ellipj.cc, libinterp/corefcn/filter.cc,
libinterp/corefcn/gcd.cc, libinterp/corefcn/gl-render.cc,
libinterp/corefcn/graphics.cc, libinterp/corefcn/graphics.in.h,
libinterp/corefcn/kron.cc, libinterp/corefcn/ls-mat4.cc,
libinterp/corefcn/ls-mat5.cc, libinterp/corefcn/mex.cc,
libinterp/corefcn/oct-map.cc, libinterp/corefcn/oct-stream.cc,
libinterp/corefcn/ordqz.cc, libinterp/corefcn/ordschur.cc,
libinterp/corefcn/perms.cc, libinterp/corefcn/psi.cc,
libinterp/corefcn/quadcc.cc, libinterp/corefcn/qz.cc,
libinterp/corefcn/rand.cc, libinterp/corefcn/sqrtm.cc,
libinterp/corefcn/strfind.cc, libinterp/corefcn/symrcm.cc,
libinterp/corefcn/tril.cc, libinterp/corefcn/typecast.cc,
libinterp/corefcn/xdiv.cc, libinterp/dldfcn/__delaunayn__.cc,
libinterp/dldfcn/__glpk__.cc, libinterp/dldfcn/__ode15__.cc,
libinterp/dldfcn/__voronoi__.cc, libinterp/dldfcn/audioread.cc,
libinterp/dldfcn/convhulln.cc, libinterp/octave-value/ov-base-int.cc,
libinterp/octave-value/ov-bool-mat.cc, libinterp/octave-value/ov-ch-mat.cc,
libinterp/octave-value/ov-cx-diag.cc, libinterp/octave-value/ov-cx-mat.cc,
libinterp/octave-value/ov-flt-cx-diag.cc,
libinterp/octave-value/ov-flt-cx-mat.cc,
libinterp/octave-value/ov-flt-re-diag.cc,
libinterp/octave-value/ov-flt-re-mat.cc, libinterp/octave-value/ov-intx.h,
libinterp/octave-value/ov-java.cc, libinterp/octave-value/ov-perm.cc,
libinterp/octave-value/ov-re-diag.cc, libinterp/octave-value/ov-re-mat.cc,
libinterp/octave-value/ov-str-mat.cc, liboctave/array/Array-base.cc,
liboctave/array/Array-util.cc, liboctave/array/CColVector.cc,
liboctave/array/CDiagMatrix.cc, liboctave/array/CMatrix.cc,
liboctave/array/CNDArray.cc, liboctave/array/CRowVector.cc,
liboctave/array/CSparse.cc, liboctave/array/DiagArray2.h,
liboctave/array/MArray.cc, liboctave/array/PermMatrix.cc,
liboctave/array/Range.h, liboctave/array/Sparse.cc,
liboctave/array/boolSparse.cc, liboctave/array/dColVector.cc,
liboctave/array/dDiagMatrix.cc, liboctave/array/dMatrix.cc,
liboctave/array/dNDArray.cc, liboctave/array/dRowVector.cc,
liboctave/array/dSparse.cc, liboctave/array/fCColVector.cc,
liboctave/array/fCDiagMatrix.cc, liboctave/array/fCMatrix.cc,
liboctave/array/fCNDArray.cc, liboctave/array/fCRowVector.cc,
liboctave/array/fColVector.cc, liboctave/array/fMatrix.cc,
liboctave/array/fNDArray.cc, liboctave/array/fRowVector.cc,
liboctave/array/idx-vector.cc, liboctave/numeric/CollocWt.cc,
liboctave/numeric/DASPK.cc, liboctave/numeric/DASRT.cc,
liboctave/numeric/DASSL.cc, liboctave/numeric/EIG.cc,
liboctave/numeric/LSODE.cc, liboctave/numeric/Quad.cc,
liboctave/numeric/aepbalance.cc, liboctave/numeric/bsxfun-defs.cc,
liboctave/numeric/chol.cc, liboctave/numeric/eigs-base.cc,
liboctave/numeric/fEIG.cc, liboctave/numeric/gepbalance.cc,
liboctave/numeric/gsvd.cc, liboctave/numeric/hess.cc, liboctave/numeric/lu.cc,
liboctave/numeric/oct-convn.cc, liboctave/numeric/oct-rand.cc,
liboctave/numeric/qr.cc, liboctave/numeric/qrp.cc, liboctave/numeric/schur.cc,
liboctave/numeric/sparse-dmsolve.cc, liboctave/numeric/sparse-lu.cc,
liboctave/numeric/sparse-qr.cc, liboctave/numeric/svd.cc,
liboctave/operators/mx-inlines.cc, liboctave/operators/mx-op-defs.h,
liboctave/util/oct-base64.cc, liboctave/util/oct-binmap.h,
liboctave/util/str-vec.cc:
Replace calls to fortran_vec() with calls to rwdata().
author | Rik <rik@octave.org> |
---|---|
date | Wed, 27 Dec 2023 16:55:14 -0800 |
parents | 2e484f9f1f18 |
children |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 2008-2024 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_BEGIN_NAMESPACE(octave) 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_END_NAMESPACE(octave)