octave: libinterp/corefcn/inv.cc annotate

annotate libinterp/corefcn/inv.cc @ 31605:e88a07dec498 stable

maint: Use macros to begin/end C++ namespaces. * oct-conf-post-public.in.h: Define two macros (OCTAVE_BEGIN_NAMESPACE, OCTAVE_END_NAMESPACE) that can be used to start/end a namespace. * mk-opts.pl, build-env.h, build-env.in.cc, __betainc__.cc, __contourc__.cc, __dsearchn__.cc, __eigs__.cc, __expint__.cc, __ftp__.cc, __gammainc__.cc, __ichol__.cc, __ilu__.cc, __isprimelarge__.cc, __lin_interpn__.cc, __magick_read__.cc, __pchip_deriv__.cc, __qp__.cc, amd.cc, auto-shlib.cc, auto-shlib.h, balance.cc, base-text-renderer.cc, base-text-renderer.h, besselj.cc, bitfcns.cc, bsxfun.cc, c-file-ptr-stream.cc, c-file-ptr-stream.h, call-stack.cc, call-stack.h, ccolamd.cc, cellfun.cc, chol.cc, colamd.cc, colloc.cc, conv2.cc, daspk.cc, dasrt.cc, dassl.cc, data.cc, data.h, debug.cc, defaults.cc, defaults.h, defun-int.h, defun.cc, det.cc, dirfns.cc, display.cc, display.h, dlmread.cc, dmperm.cc, dot.cc, dynamic-ld.cc, dynamic-ld.h, eig.cc, ellipj.cc, environment.cc, environment.h, error.cc, error.h, errwarn.h, event-manager.cc, event-manager.h, event-queue.cc, event-queue.h, fcn-info.cc, fcn-info.h, fft.cc, fft2.cc, fftn.cc, file-io.cc, filter.cc, find.cc, ft-text-renderer.cc, ft-text-renderer.h, gcd.cc, getgrent.cc, getpwent.cc, getrusage.cc, givens.cc, gl-render.cc, gl-render.h, gl2ps-print.cc, gl2ps-print.h, graphics-toolkit.cc, graphics-toolkit.h, graphics.cc, graphics.in.h, gsvd.cc, gtk-manager.cc, gtk-manager.h, hash.cc, help.cc, help.h, hess.cc, hex2num.cc, hook-fcn.cc, hook-fcn.h, input.cc, input.h, interpreter-private.cc, interpreter-private.h, interpreter.cc, interpreter.h, inv.cc, jsondecode.cc, jsonencode.cc, kron.cc, latex-text-renderer.cc, latex-text-renderer.h, load-path.cc, load-path.h, load-save.cc, load-save.h, lookup.cc, ls-ascii-helper.cc, ls-ascii-helper.h, ls-oct-text.cc, ls-utils.cc, ls-utils.h, lsode.cc, lu.cc, mappers.cc, matrix_type.cc, max.cc, mex-private.h, mex.cc, mgorth.cc, nproc.cc, oct-fstrm.cc, oct-fstrm.h, oct-hdf5-types.cc, oct-hdf5-types.h, oct-hist.cc, oct-hist.h, oct-iostrm.cc, oct-iostrm.h, oct-opengl.h, oct-prcstrm.cc, oct-prcstrm.h, oct-procbuf.cc, oct-procbuf.h, oct-process.cc, oct-process.h, oct-stdstrm.h, oct-stream.cc, oct-stream.h, oct-strstrm.cc, oct-strstrm.h, oct-tex-lexer.in.ll, oct-tex-parser.yy, ordqz.cc, ordschur.cc, pager.cc, pager.h, pinv.cc, pow2.cc, pr-flt-fmt.cc, pr-output.cc, procstream.cc, procstream.h, psi.cc, qr.cc, quad.cc, quadcc.cc, qz.cc, rand.cc, rcond.cc, regexp.cc, schur.cc, settings.cc, settings.h, sighandlers.cc, sighandlers.h, sparse-xdiv.cc, sparse-xdiv.h, sparse-xpow.cc, sparse-xpow.h, sparse.cc, spparms.cc, sqrtm.cc, stack-frame.cc, stack-frame.h, stream-euler.cc, strfind.cc, strfns.cc, sub2ind.cc, svd.cc, sylvester.cc, symbfact.cc, syminfo.cc, syminfo.h, symrcm.cc, symrec.cc, symrec.h, symscope.cc, symscope.h, symtab.cc, symtab.h, syscalls.cc, sysdep.cc, sysdep.h, text-engine.cc, text-engine.h, text-renderer.cc, text-renderer.h, time.cc, toplev.cc, tril.cc, tsearch.cc, typecast.cc, url-handle-manager.cc, url-handle-manager.h, urlwrite.cc, utils.cc, utils.h, variables.cc, variables.h, xdiv.cc, xdiv.h, xnorm.cc, xnorm.h, xpow.cc, xpow.h, __delaunayn__.cc, __fltk_uigetfile__.cc, __glpk__.cc, __init_fltk__.cc, __init_gnuplot__.cc, __ode15__.cc, __voronoi__.cc, audiodevinfo.cc, audioread.cc, convhulln.cc, fftw.cc, gzip.cc, mk-build-env-features.sh, mk-builtins.pl, cdef-class.cc, cdef-class.h, cdef-fwd.h, cdef-manager.cc, cdef-manager.h, cdef-method.cc, cdef-method.h, cdef-object.cc, cdef-object.h, cdef-package.cc, cdef-package.h, cdef-property.cc, cdef-property.h, cdef-utils.cc, cdef-utils.h, ov-base.cc, ov-base.h, ov-bool-mat.cc, ov-builtin.h, ov-cell.cc, ov-class.cc, ov-class.h, ov-classdef.cc, ov-classdef.h, ov-complex.cc, ov-fcn-handle.cc, ov-fcn-handle.h, ov-fcn.h, ov-java.cc, ov-java.h, ov-mex-fcn.h, ov-null-mat.cc, ov-oncleanup.cc, ov-struct.cc, ov-typeinfo.cc, ov-typeinfo.h, ov-usr-fcn.cc, ov-usr-fcn.h, ov.cc, ov.h, octave.cc, octave.h, mk-ops.sh, op-b-b.cc, op-b-bm.cc, op-b-sbm.cc, op-bm-b.cc, op-bm-bm.cc, op-bm-sbm.cc, op-cdm-cdm.cc, op-cell.cc, op-chm.cc, op-class.cc, op-cm-cm.cc, op-cm-cs.cc, op-cm-m.cc, op-cm-s.cc, op-cm-scm.cc, op-cm-sm.cc, op-cs-cm.cc, op-cs-cs.cc, op-cs-m.cc, op-cs-s.cc, op-cs-scm.cc, op-cs-sm.cc, op-dm-dm.cc, op-dm-scm.cc, op-dm-sm.cc, op-dm-template.cc, op-dms-template.cc, op-fcdm-fcdm.cc, op-fcm-fcm.cc, op-fcm-fcs.cc, op-fcm-fm.cc, op-fcm-fs.cc, op-fcn.cc, op-fcs-fcm.cc, op-fcs-fcs.cc, op-fcs-fm.cc, op-fcs-fs.cc, op-fdm-fdm.cc, op-fm-fcm.cc, op-fm-fcs.cc, op-fm-fm.cc, op-fm-fs.cc, op-fs-fcm.cc, op-fs-fcs.cc, op-fs-fm.cc, op-fs-fs.cc, op-i16-i16.cc, op-i32-i32.cc, op-i64-i64.cc, op-i8-i8.cc, op-int-concat.cc, op-m-cm.cc, op-m-cs.cc, op-m-m.cc, op-m-s.cc, op-m-scm.cc, op-m-sm.cc, op-mi.cc, op-pm-pm.cc, op-pm-scm.cc, op-pm-sm.cc, op-pm-template.cc, op-range.cc, op-s-cm.cc, op-s-cs.cc, op-s-m.cc, op-s-s.cc, op-s-scm.cc, op-s-sm.cc, op-sbm-b.cc, op-sbm-bm.cc, op-sbm-sbm.cc, op-scm-cm.cc, op-scm-cs.cc, op-scm-m.cc, op-scm-s.cc, op-scm-scm.cc, op-scm-sm.cc, op-sm-cm.cc, op-sm-cs.cc, op-sm-m.cc, op-sm-s.cc, op-sm-scm.cc, op-sm-sm.cc, op-str-m.cc, op-str-s.cc, op-str-str.cc, op-struct.cc, op-ui16-ui16.cc, op-ui32-ui32.cc, op-ui64-ui64.cc, op-ui8-ui8.cc, ops.h, anon-fcn-validator.cc, anon-fcn-validator.h, bp-table.cc, bp-table.h, comment-list.cc, comment-list.h, filepos.h, lex.h, lex.ll, oct-lvalue.cc, oct-lvalue.h, oct-parse.yy, parse.h, profiler.cc, profiler.h, pt-anon-scopes.cc, pt-anon-scopes.h, pt-arg-list.cc, pt-arg-list.h, pt-args-block.cc, pt-args-block.h, pt-array-list.cc, pt-array-list.h, pt-assign.cc, pt-assign.h, pt-binop.cc, pt-binop.h, pt-bp.cc, pt-bp.h, pt-cbinop.cc, pt-cbinop.h, pt-cell.cc, pt-cell.h, pt-check.cc, pt-check.h, pt-classdef.cc, pt-classdef.h, pt-cmd.h, pt-colon.cc, pt-colon.h, pt-const.cc, pt-const.h, pt-decl.cc, pt-decl.h, pt-eval.cc, pt-eval.h, pt-except.cc, pt-except.h, pt-exp.cc, pt-exp.h, pt-fcn-handle.cc, pt-fcn-handle.h, pt-id.cc, pt-id.h, pt-idx.cc, pt-idx.h, pt-jump.h, pt-loop.cc, pt-loop.h, pt-mat.cc, pt-mat.h, pt-misc.cc, pt-misc.h, pt-pr-code.cc, pt-pr-code.h, pt-select.cc, pt-select.h, pt-spmd.cc, pt-spmd.h, pt-stmt.cc, pt-stmt.h, pt-tm-const.cc, pt-tm-const.h, pt-unop.cc, pt-unop.h, pt-vm-eval.cc, pt-walk.cc, pt-walk.h, pt.cc, pt.h, token.cc, token.h, Range.cc, Range.h, idx-vector.cc, idx-vector.h, range-fwd.h, CollocWt.cc, CollocWt.h, aepbalance.cc, aepbalance.h, chol.cc, chol.h, gepbalance.cc, gepbalance.h, gsvd.cc, gsvd.h, hess.cc, hess.h, lo-mappers.cc, lo-mappers.h, lo-specfun.cc, lo-specfun.h, lu.cc, lu.h, oct-convn.cc, oct-convn.h, oct-fftw.cc, oct-fftw.h, oct-norm.cc, oct-norm.h, oct-rand.cc, oct-rand.h, oct-spparms.cc, oct-spparms.h, qr.cc, qr.h, qrp.cc, qrp.h, randgamma.cc, randgamma.h, randmtzig.cc, randmtzig.h, randpoisson.cc, randpoisson.h, schur.cc, schur.h, sparse-chol.cc, sparse-chol.h, sparse-lu.cc, sparse-lu.h, sparse-qr.cc, sparse-qr.h, svd.cc, svd.h, child-list.cc, child-list.h, dir-ops.cc, dir-ops.h, file-ops.cc, file-ops.h, file-stat.cc, file-stat.h, lo-sysdep.cc, lo-sysdep.h, lo-sysinfo.cc, lo-sysinfo.h, mach-info.cc, mach-info.h, oct-env.cc, oct-env.h, oct-group.cc, oct-group.h, oct-password.cc, oct-password.h, oct-syscalls.cc, oct-syscalls.h, oct-time.cc, oct-time.h, oct-uname.cc, oct-uname.h, action-container.cc, action-container.h, base-list.h, cmd-edit.cc, cmd-edit.h, cmd-hist.cc, cmd-hist.h, f77-fcn.h, file-info.cc, file-info.h, lo-array-errwarn.cc, lo-array-errwarn.h, lo-hash.cc, lo-hash.h, lo-ieee.h, lo-regexp.cc, lo-regexp.h, lo-utils.cc, lo-utils.h, oct-base64.cc, oct-base64.h, oct-glob.cc, oct-glob.h, oct-inttypes.h, oct-mutex.cc, oct-mutex.h, oct-refcount.h, oct-shlib.cc, oct-shlib.h, oct-sparse.cc, oct-sparse.h, oct-string.h, octave-preserve-stream-state.h, pathsearch.cc, pathsearch.h, quit.cc, quit.h, unwind-prot.cc, unwind-prot.h, url-transfer.cc, url-transfer.h : Use new macros to begin/end C++ namespaces.

author	Rik <rik@octave.org>
date	Thu, 01 Dec 2022 14:23:45 -0800
parents	7802c652081f
children	aac27ad79be6

rev	line source
27923 bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	1 ////////////////////////////////////////////////////////////////////////
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	2 //
30564 796f54d4ddbf update Octave Project Developers copyright for the new year John W. Eaton <jwe@octave.org> parents: 30554 diff changeset	3 // Copyright (C) 1996-2022 The Octave Project Developers
27923 bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	4 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	5 // See the file COPYRIGHT.md in the top-level directory of this
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	6 // distribution or <https://octave.org/copyright/>.
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	7 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	8 // This file is part of Octave.
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	9 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	10 // Octave is free software: you can redistribute it and/or modify it
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	11 // under the terms of the GNU General Public License as published by
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	12 // the Free Software Foundation, either version 3 of the License, or
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	13 // (at your option) any later version.
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	14 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	15 // Octave is distributed in the hope that it will be useful, but
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	16 // WITHOUT ANY WARRANTY; without even the implied warranty of
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	18 // GNU General Public License for more details.
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	19 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	20 // You should have received a copy of the GNU General Public License
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	21 // along with Octave; see the file COPYING. If not, see
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	22 // <https://www.gnu.org/licenses/>.
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	23 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	24 ////////////////////////////////////////////////////////////////////////
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	25
21724 aba2e6293dd8 use "#if ..." consistently instead of "#ifdef" and "#ifndef" John W. Eaton <jwe@octave.org> parents: 21301 diff changeset	26 #if defined (HAVE_CONFIG_H)
21301 40de9f8f23a6 Use '#include "config.h"' rather than <config.h>. Rik <rik@octave.org> parents: 21200 diff changeset	27 # include "config.h"
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	28 #endif
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	29
15039 e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory Rik <rik@octave.org> parents: 14501 diff changeset	30 #include "defun.h"
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	31 #include "error.h"
21100 e39e05d90788 Switch gripe_XXX to either err_XXX or warn_XXX naming scheme. Rik <rik@octave.org> parents: 21024 diff changeset	32 #include "errwarn.h"
20940 48b2ad5ee801 maint: Rename oct-obj.[cc\|h] to ovl.[cc\|h] for clarity. Rik <rik@octave.org> parents: 20898 diff changeset	33 #include "ovl.h"
8366 8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	34 #include "ops.h"
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	35 #include "ov-re-diag.h"
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	36 #include "ov-cx-diag.h"
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	37 #include "ov-flt-re-diag.h"
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	38 #include "ov-flt-cx-diag.h"
8371 c3f7e2549abb make det & inv aware of diagonal & permutation matrices Jaroslav Hajek <highegg@gmail.com> parents: 8366 diff changeset	39 #include "ov-perm.h"
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	40
31605 e88a07dec498 maint: Use macros to begin/end C++ namespaces. Rik <rik@octave.org> parents: 31384 diff changeset	41 OCTAVE_BEGIN_NAMESPACE(octave)
29958 32c3a5805893 move DEFUN and DEFMETHOD functions inside octave namespace John W. Eaton <jwe@octave.org> parents: 29359 diff changeset	42
15039 e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory Rik <rik@octave.org> parents: 14501 diff changeset	43 DEFUN (inv, args, nargout,
21966 112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	44 doc: /* -- texinfo --
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	45 @deftypefn {} {@var{x} =} inv (@var{A})
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	46 @deftypefnx {} {[@var{x}, @var{rcond}] =} inv (@var{A})
27253 7f5008aec7a1 doc: Add function index entry for alias "inverse" bug #56629). Rik <rik@octave.org> parents: 26376 diff changeset	47 @deftypefnx {} {[@dots{}] =} inverse (@dots{})
21966 112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	48 Compute the inverse of the square matrix @var{A}.
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	49
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	50 Return an estimate of the reciprocal condition number if requested,
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	51 otherwise warn of an ill-conditioned matrix if the reciprocal condition
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	52 number is small.
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	53
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	54 In general it is best to avoid calculating the inverse of a matrix directly.
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	55 For example, it is both faster and more accurate to solve systems of
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	56 equations (@var{A}*@math{x} = @math{b}) with
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	57 @code{@var{y} = @var{A} \ @math{b}}, rather than
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	58 @code{@var{y} = inv (@var{A}) * @math{b}}.
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	59
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	60 If called with a sparse matrix, then in general @var{x} will be a full
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	61 matrix requiring significantly more storage. Avoid forming the inverse of a
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	62 sparse matrix if possible.
27253 7f5008aec7a1 doc: Add function index entry for alias "inverse" bug #56629). Rik <rik@octave.org> parents: 26376 diff changeset	63
7f5008aec7a1 doc: Add function index entry for alias "inverse" bug #56629). Rik <rik@octave.org> parents: 26376 diff changeset	64 @code{inverse} is an alias and may be used identically in place of @code{inv}.
24197 63fc7a75a3d7 doc: Update docstring for pinv and inv. Rik <rik@octave.org> parents: 23219 diff changeset	65 @seealso{ldivide, rdivide, pinv}
21966 112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	66 @end deftypefn */)
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	67 {
20819 f428cbe7576f eliminate unnecessary uses of nargin John W. Eaton <jwe@octave.org> parents: 20802 diff changeset	68 if (args.length () != 1)
20802 8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20678 diff changeset	69 print_usage ();
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	70
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	71 octave_value arg = args(0);
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	72
30574 33f77d94b4c9 inv: disallow logical inputs for Matlab compatibility (bug #61728) Rik <rik@octave.org> parents: 30573 diff changeset	73 if (! arg.isnumeric ())
30573 3b2558676d0e inv: Improve input validation (bug #61728). Antonius Burgers <arburgers@gmail.com> parents: 30565 diff changeset	74 err_wrong_type_arg ("inv", arg);
3b2558676d0e inv: Improve input validation (bug #61728). Antonius Burgers <arburgers@gmail.com> parents: 30565 diff changeset	75
23577 80c42f4cca13 maint: Deprecate is_empty and replace with isempty. Rik <rik@octave.org> parents: 23453 diff changeset	76 if (arg.isempty ())
21127 df7891224709 maint: Use "return ovl (...)" in DEFUN macros. Rik <rik@octave.org> parents: 21112 diff changeset	77 return ovl (Matrix ());
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	78
22372 0c0de2205d38 utils.h: deprecated out of date arg_is_empty function. Carnë Draug <carandraug@octave.org> parents: 22327 diff changeset	79 if (arg.rows () != arg.columns ())
30573 3b2558676d0e inv: Improve input validation (bug #61728). Antonius Burgers <arburgers@gmail.com> parents: 30565 diff changeset	80 err_square_matrix_required ("inv", "A");
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	81
7515 f3c00dc0912b Eliminate the rest of the dispatched sparse functions David Bateman <dbateman@free.fr> parents: 7017 diff changeset	82 octave_value result;
31384 7802c652081f inv: Initialize variable to silence valgrind warning (bug #63300). Markus Mützel <markus.muetzel@gmx.de> parents: 31319 diff changeset	83 octave_idx_type info = 0;
7515 f3c00dc0912b Eliminate the rest of the dispatched sparse functions David Bateman <dbateman@free.fr> parents: 7017 diff changeset	84 double rcond = 0.0;
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7650 diff changeset	85 float frcond = 0.0;
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7650 diff changeset	86 bool isfloat = arg.is_single_type ();
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7650 diff changeset	87
8366 8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	88 if (arg.is_diag_matrix ())
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	89 {
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	90 rcond = 1.0;
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	91 frcond = 1.0f;
23581 c3075ae020e1 maint: Deprecate is_complex_type and replace with iscomplex. Rik <rik@octave.org> parents: 23577 diff changeset	92 if (arg.iscomplex ())
8366 8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	93 {
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	94 if (isfloat)
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	95 {
31319 6cf02f842e74 Backed out changeset 24e45a79bf3c Arun Giridhar <arungiridhar@gmail.com> parents: 31316 diff changeset	96 result = arg.float_complex_diag_matrix_value ().inverse (info);
27093 6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	97 if (info == -1)
6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	98 frcond = 0.0f;
6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	99 else if (nargout > 1)
31319 6cf02f842e74 Backed out changeset 24e45a79bf3c Arun Giridhar <arungiridhar@gmail.com> parents: 31316 diff changeset	100 frcond = arg.float_complex_diag_matrix_value ().rcond ();
8366 8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	101 }
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	102 else
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	103 {
31319 6cf02f842e74 Backed out changeset 24e45a79bf3c Arun Giridhar <arungiridhar@gmail.com> parents: 31316 diff changeset	104 result = arg.complex_diag_matrix_value ().inverse (info);
27093 6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	105 if (info == -1)
6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	106 rcond = 0.0;
6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	107 else if (nargout > 1)
31319 6cf02f842e74 Backed out changeset 24e45a79bf3c Arun Giridhar <arungiridhar@gmail.com> parents: 31316 diff changeset	108 rcond = arg.complex_diag_matrix_value ().rcond ();
8366 8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	109 }
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	110 }
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	111 else
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	112 {
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	113 if (isfloat)
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	114 {
31319 6cf02f842e74 Backed out changeset 24e45a79bf3c Arun Giridhar <arungiridhar@gmail.com> parents: 31316 diff changeset	115 result = arg.float_diag_matrix_value ().inverse (info);
27093 6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	116 if (info == -1)
6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	117 frcond = 0.0f;
6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	118 else if (nargout > 1)
31319 6cf02f842e74 Backed out changeset 24e45a79bf3c Arun Giridhar <arungiridhar@gmail.com> parents: 31316 diff changeset	119 frcond = arg.float_diag_matrix_value ().rcond ();
8366 8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	120 }
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	121 else
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	122 {
31319 6cf02f842e74 Backed out changeset 24e45a79bf3c Arun Giridhar <arungiridhar@gmail.com> parents: 31316 diff changeset	123 result = arg.diag_matrix_value ().inverse (info);
27093 6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	124 if (info == -1)
6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	125 rcond = 0.0;
6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	126 else if (nargout > 1)
31319 6cf02f842e74 Backed out changeset 24e45a79bf3c Arun Giridhar <arungiridhar@gmail.com> parents: 31316 diff changeset	127 rcond = arg.diag_matrix_value ().rcond ();
8366 8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	128 }
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	129 }
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	130 }
8371 c3f7e2549abb make det & inv aware of diagonal & permutation matrices Jaroslav Hajek <highegg@gmail.com> parents: 8366 diff changeset	131 else if (arg.is_perm_matrix ())
c3f7e2549abb make det & inv aware of diagonal & permutation matrices Jaroslav Hajek <highegg@gmail.com> parents: 8366 diff changeset	132 {
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	133 info = 0;
8371 c3f7e2549abb make det & inv aware of diagonal & permutation matrices Jaroslav Hajek <highegg@gmail.com> parents: 8366 diff changeset	134 rcond = 1.0;
31319 6cf02f842e74 Backed out changeset 24e45a79bf3c Arun Giridhar <arungiridhar@gmail.com> parents: 31316 diff changeset	135 result = arg.perm_matrix_value ().inverse ();
8371 c3f7e2549abb make det & inv aware of diagonal & permutation matrices Jaroslav Hajek <highegg@gmail.com> parents: 8366 diff changeset	136 }
8366 8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 7911 diff changeset	137 else if (isfloat)
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	138 {
23582 0cc2011d800e maint: Deprecate is_real_type and replace with isreal. Rik <rik@octave.org> parents: 23581 diff changeset	139 if (arg.isreal ())
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	140 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	141 FloatMatrix m = arg.float_matrix_value ();
20678 4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	142
4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	143 MatrixType mattyp = args(0).matrix_type ();
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	144 result = m.inverse (mattyp, info, frcond, true, true);
20678 4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	145 args(0).matrix_type (mattyp);
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	146 }
23581 c3075ae020e1 maint: Deprecate is_complex_type and replace with iscomplex. Rik <rik@octave.org> parents: 23577 diff changeset	147 else if (arg.iscomplex ())
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	148 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	149 FloatComplexMatrix m = arg.float_complex_matrix_value ();
20678 4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	150
4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	151 MatrixType mattyp = args(0).matrix_type ();
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	152 result = m.inverse (mattyp, info, frcond, true, true);
20678 4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	153 args(0).matrix_type (mattyp);
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	154 }
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	155 }
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7650 diff changeset	156 else
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	157 {
23582 0cc2011d800e maint: Deprecate is_real_type and replace with isreal. Rik <rik@octave.org> parents: 23581 diff changeset	158 if (arg.isreal ())
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	159 {
23583 b7747a2c88b2 maint: Deprecate is_sparse_type and replace with issparse. Rik <rik@octave.org> parents: 23582 diff changeset	160 if (arg.issparse ())
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	161 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	162 SparseMatrix m = arg.sparse_matrix_value ();
20678 4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	163
4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	164 MatrixType mattyp = args(0).matrix_type ();
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	165 result = m.inverse (mattyp, info, rcond, true, true);
20678 4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	166 args(0).matrix_type (mattyp);
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	167 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	168 else
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	169 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	170 Matrix m = arg.matrix_value ();
20678 4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	171
4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	172 MatrixType mattyp = args(0).matrix_type ();
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	173 result = m.inverse (mattyp, info, rcond, true, true);
20678 4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	174 args(0).matrix_type (mattyp);
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	175 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	176 }
23581 c3075ae020e1 maint: Deprecate is_complex_type and replace with iscomplex. Rik <rik@octave.org> parents: 23577 diff changeset	177 else if (arg.iscomplex ())
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	178 {
23583 b7747a2c88b2 maint: Deprecate is_sparse_type and replace with issparse. Rik <rik@octave.org> parents: 23582 diff changeset	179 if (arg.issparse ())
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	180 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	181 SparseComplexMatrix m = arg.sparse_complex_matrix_value ();
20678 4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	182
4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	183 MatrixType mattyp = args(0).matrix_type ();
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	184 result = m.inverse (mattyp, info, rcond, true, true);
20678 4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	185 args(0).matrix_type (mattyp);
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	186 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	187 else
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	188 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	189 ComplexMatrix m = arg.complex_matrix_value ();
20678 4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	190
4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	191 MatrixType mattyp = args(0).matrix_type ();
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	192 result = m.inverse (mattyp, info, rcond, true, true);
20678 4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	193 args(0).matrix_type (mattyp);
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	194 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9064 diff changeset	195 }
7515 f3c00dc0912b Eliminate the rest of the dispatched sparse functions David Bateman <dbateman@free.fr> parents: 7017 diff changeset	196 else
30573 3b2558676d0e inv: Improve input validation (bug #61728). Antonius Burgers <arburgers@gmail.com> parents: 30565 diff changeset	197 // Shouldn't get here since we checked for suitable arg earlier.
3b2558676d0e inv: Improve input validation (bug #61728). Antonius Burgers <arburgers@gmail.com> parents: 30565 diff changeset	198 // Maybe for some user-defined classes?
21100 e39e05d90788 Switch gripe_XXX to either err_XXX or warn_XXX naming scheme. Rik <rik@octave.org> parents: 21024 diff changeset	199 err_wrong_type_arg ("inv", arg);
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	200 }
7515 f3c00dc0912b Eliminate the rest of the dispatched sparse functions David Bateman <dbateman@free.fr> parents: 7017 diff changeset	201
20898 8da80da1ac37 maint: Use ovl() more places in the code. Rik <rik@octave.org> parents: 20892 diff changeset	202 octave_value_list retval (nargout > 1 ? 2 : 1);
8da80da1ac37 maint: Use ovl() more places in the code. Rik <rik@octave.org> parents: 20892 diff changeset	203
8da80da1ac37 maint: Use ovl() more places in the code. Rik <rik@octave.org> parents: 20892 diff changeset	204 retval(0) = result;
20678 4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	205 if (nargout > 1)
23450 855122b993da maint: Wrap tertiary operator in parentheses "(COND ? x : y)". Rik <rik@octave.org> parents: 23220 diff changeset	206 retval(1) = (isfloat ? octave_value (frcond) : octave_value (rcond));
7515 f3c00dc0912b Eliminate the rest of the dispatched sparse functions David Bateman <dbateman@free.fr> parents: 7017 diff changeset	207
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	208 if (nargout < 2)
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	209 {
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	210 bool is_singular;
18243 36057e2411f8 test float rcond using float arithmetic in inv function (bug #41065) John W. Eaton <jwe@octave.org> parents: 17787 diff changeset	211
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	212 if (isfloat)
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	213 is_singular = ((frcond + 1.0f == 1.0f) \|\| octave::math::isnan (frcond))
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	214 && ! arg.is_scalar_type ();
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	215 else
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	216 is_singular = ((rcond + 1.0 == 1.0) \|\| octave::math::isnan (rcond))
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	217 && ! arg.is_scalar_type ();
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	218
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	219 if (info == -1 \|\| is_singular)
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	220 warn_singular_matrix (isfloat ? frcond : rcond);
20678 4b00afb5e9c3 eliminate more uses of error_state John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	221 }
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	222
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	223 return retval;
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	224 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	225
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	226 /*
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	227 ## Basic test for double/single matrices
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	228 %!assert (inv ([1, 2; 3, 4]), [-2, 1; 1.5, -0.5], 5*eps)
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	229 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	230 %! [xinv, rcond] = inv ([1,2;3,4]);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	231 %! assert (xinv, [-2, 1; 1.5, -0.5], 5*eps);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	232 %! assert (isa (rcond, "double"));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	233
30313 98400baa509f Return Inf for inv(0) for compatibility with division operator and Matlab (bug #52285). Rik <rik@octave.org> parents: 29961 diff changeset	234 %!assert (inv (single ([1, 2; 3, 4])), single ([-2, 1; 1.5, -0.5]),
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	235 %! 5*eps ("single"))
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	236 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	237 %! [xinv, rcond] = inv (single ([1,2;3,4]));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	238 %! assert (xinv, single ([-2, 1; 1.5, -0.5]), 5*eps ("single"));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	239 %! assert (isa (rcond, "single"));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	240
30609 09012191bb0c pinv: Improve input validation (Bug #61767). Antonius Burgers <arburgers@gmail.com> parents: 30590 diff changeset	241 ## Basic test for integer inputs
09012191bb0c pinv: Improve input validation (Bug #61767). Antonius Burgers <arburgers@gmail.com> parents: 30590 diff changeset	242 %!assert (inv (int32 (2)), 0.5)
09012191bb0c pinv: Improve input validation (Bug #61767). Antonius Burgers <arburgers@gmail.com> parents: 30590 diff changeset	243 %!assert (inv (uint32 (2)), 0.5)
09012191bb0c pinv: Improve input validation (Bug #61767). Antonius Burgers <arburgers@gmail.com> parents: 30590 diff changeset	244 %!assert (inv (int64 (2)), 0.5)
09012191bb0c pinv: Improve input validation (Bug #61767). Antonius Burgers <arburgers@gmail.com> parents: 30590 diff changeset	245 %!assert (inv (uint64 (2)), 0.5)
09012191bb0c pinv: Improve input validation (Bug #61767). Antonius Burgers <arburgers@gmail.com> parents: 30590 diff changeset	246
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	247 ## Normal scalar cases
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	248 %!assert (inv (2), 0.5)
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	249 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	250 %! [xinv, rcond] = inv (2);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	251 %! assert (xinv, 0.5);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	252 %! assert (rcond, 1);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	253 %!assert (inv (single (2)), single (0.5))
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	254 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	255 %! [xinv, rcond] = inv (single (2));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	256 %! assert (xinv, single (0.5));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	257 %! assert (rcond, single (1));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	258 %!assert (inv (complex (1, -1)), 0.5+0.5i)
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	259 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	260 %! [xinv, rcond] = inv (complex (1, -1));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	261 %! assert (xinv, 0.5+0.5i);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	262 %! assert (rcond, 1);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	263 %!assert (inv (complex (single (1), -1)), single (0.5+0.5i))
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	264 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	265 %! [xinv, rcond] = inv (complex (single (1), -1));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	266 %! assert (xinv, single (0.5+0.5i));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	267 %! assert (rcond, single (1));
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	268
22849 1d242ae72240 Return 0 for special case of scalar Inf input to inverse (bug #49690). Rik <rik@octave.org> parents: 22755 diff changeset	269 ## Test special inputs
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	270 ## Empty matrix
22849 1d242ae72240 Return 0 for special case of scalar Inf input to inverse (bug #49690). Rik <rik@octave.org> parents: 22755 diff changeset	271 %!assert (inv (zeros (2,0)), [])
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	272
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	273 ## Scalar "0"
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	274 %!assert (inv (0), Inf)
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	275 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	276 %! [xinv, rcond] = inv (0);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	277 %! assert (xinv, Inf);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	278 %! assert (rcond, 0);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	279 %!assert (inv (single (0)), single (Inf))
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	280 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	281 %! [xinv, rcond] = inv (single (0));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	282 %! assert (xinv, single (Inf));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	283 %! assert (rcond, single (0));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	284 %!assert (inv (complex (0, 0)), Inf)
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	285 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	286 %! [xinv, rcond] = inv (complex (0, 0));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	287 %! assert (xinv, Inf);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	288 %! assert (rcond, 0);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	289 %!assert (inv (complex (single (0), 0)), single (Inf))
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	290 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	291 %! [xinv, rcond] = inv (complex (single (0), 0));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	292 %! assert (xinv, single (Inf));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	293 %! assert (rcond, single (0));
30313 98400baa509f Return Inf for inv(0) for compatibility with division operator and Matlab (bug #52285). Rik <rik@octave.org> parents: 29961 diff changeset	294 ## NOTE: Matlab returns +Inf for -0 input, but it returns -Inf for 1/-0.
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	295 ## These should be the same, and in Octave they are.
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	296 %!assert (inv (-0), -Inf)
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	297 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	298 %! [xinv, rcond] = inv (-0);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	299 %! assert (xinv, -Inf);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	300 %! assert (rcond, 0);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	301
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	302 ## Scalar "Inf"
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	303 %!assert (inv (Inf), 0)
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	304 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	305 %! [xinv, rcond] = inv (Inf);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	306 %! assert (xinv, 0);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	307 %! assert (rcond, 0);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	308 %!assert (inv (single (Inf)), single (0))
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	309 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	310 %! [xinv, rcond] = inv (single (Inf));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	311 %! assert (xinv, single (0));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	312 %! assert (rcond, single (0));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	313 %!assert (inv (complex (1, Inf)), 0)
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	314 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	315 %! [xinv, rcond] = inv (complex (1, Inf));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	316 %! assert (xinv, 0);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	317 %! assert (rcond, 0);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	318 %!assert (inv (complex (single (1), Inf)), single (0))
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	319 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	320 %! [xinv, rcond] = inv (complex (single (1), Inf));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	321 %! assert (xinv, single (0));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	322 %! assert (rcond, single (0));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	323
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	324 ## Scalar "NaN"
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	325 %!assert (inv (NaN), NaN)
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	326 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	327 %! [xinv, rcond] = inv (NaN);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	328 %! assert (xinv, NaN);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	329 %! assert (rcond, NaN);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	330 %!assert (inv (single (NaN)), single (NaN))
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	331 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	332 %! [xinv, rcond] = inv (single (NaN));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	333 %! assert (xinv, single (NaN));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	334 %! assert (rcond, single (NaN));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	335 %!assert (inv (complex (1, NaN)), complex (NaN, NaN))
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	336 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	337 %! [xinv, rcond] = inv (complex (1, NaN));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	338 %! assert (xinv, complex (NaN, NaN));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	339 %! assert (rcond, NaN);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	340 %!assert (inv (complex (single (1), NaN)), complex (single (NaN), NaN))
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	341 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	342 %! [xinv, rcond] = inv (complex (single (1), NaN));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	343 %! assert (xinv, complex (single (NaN), NaN));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	344 %! assert (rcond, single (NaN));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	345
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	346 ## Matrix special values
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	347 ## Matrix of all zeroes
30313 98400baa509f Return Inf for inv(0) for compatibility with division operator and Matlab (bug #52285). Rik <rik@octave.org> parents: 29961 diff changeset	348 %!warning <matrix singular> assert (inv (zeros (2,2)), Inf (2,2))
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	349 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	350 %! [xinv, rcond] = inv (zeros (2,2));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	351 %! assert (xinv, Inf (2,2));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	352 %! assert (rcond, 0);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	353 ## Matrix of all Inf
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	354 %!warning <rcond = > assert (inv (Inf (2,2)), NaN (2,2))
22849 1d242ae72240 Return 0 for special case of scalar Inf input to inverse (bug #49690). Rik <rik@octave.org> parents: 22755 diff changeset	355 %!test
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	356 %! [xinv, rcond] = inv (Inf (2,2));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	357 %! assert (xinv, NaN (2,2));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	358 %! assert (rcond, NaN);
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	359 ## Matrix of all NaN
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	360 %!warning <rcond = > assert (inv (NaN (2,2)), NaN (2,2))
22849 1d242ae72240 Return 0 for special case of scalar Inf input to inverse (bug #49690). Rik <rik@octave.org> parents: 22755 diff changeset	361 %!test
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	362 %! [xinv, rcond] = inv (NaN (2,2));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	363 %! assert (xinv, NaN (2,2));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	364 %! assert (rcond, NaN);
22849 1d242ae72240 Return 0 for special case of scalar Inf input to inverse (bug #49690). Rik <rik@octave.org> parents: 22755 diff changeset	365
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	366 ## Special diagonal matrices
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	367 %!test
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	368 %! fail ("A = inv (diag ([1, 0, 1]))", "warning", "matrix singular");
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	369 %! assert (A, diag ([Inf, Inf, Inf]));
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	370
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	371 ## Special sparse matrices
27122 d0d176ac575d make new tests for inv of singular sparse matrices conditional on HAVE_UMFPACK John W. Eaton <jwe@octave.org> parents: 27093 diff changeset	372 %!testif HAVE_UMFPACK <*56232>
27093 6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	373 %! fail ("A = inv (sparse ([1, 2;0 ,0]))", "warning", "matrix singular");
6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	374 %! assert (A, sparse ([Inf, Inf; 0, 0]));
6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	375
27122 d0d176ac575d make new tests for inv of singular sparse matrices conditional on HAVE_UMFPACK John W. Eaton <jwe@octave.org> parents: 27093 diff changeset	376 %!testif HAVE_UMFPACK <*56232>
27093 6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	377 %! fail ("A = inv (sparse ([1i, 2;0 ,0]))", "warning", "matrix singular");
6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	378 %! assert (A, sparse ([Inf, Inf; 0, 0]));
6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	379
27122 d0d176ac575d make new tests for inv of singular sparse matrices conditional on HAVE_UMFPACK John W. Eaton <jwe@octave.org> parents: 27093 diff changeset	380 %!testif HAVE_UMFPACK <*56232>
30346 91c6288781ba maint: Shorten some long lines in libinterp to <= 80 characters (bug #57599) Rik <rik@octave.org> parents: 30313 diff changeset	381 %! fail ("A = inv (sparse ([1, 0, 0; 0, 0, 0; 0, 0, 1]))",
91c6288781ba maint: Shorten some long lines in libinterp to <= 80 characters (bug #57599) Rik <rik@octave.org> parents: 30313 diff changeset	382 %! "warning", "matrix singular");
27093 6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	383 %! assert (A, sparse ([Inf, 0, 0; 0, 0, 0; 0, 0, Inf]));
6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	384
30590 50bf281760e0 inv: Add BIST tests for new input validation in cset 3b2558676d0e (bug #61728) Rik <rik@octave.org> parents: 30574 diff changeset	385 %!error <Invalid call> inv ()
50bf281760e0 inv: Add BIST tests for new input validation in cset 3b2558676d0e (bug #61728) Rik <rik@octave.org> parents: 30574 diff changeset	386 %!error <Invalid call> inv ([1, 2; 3, 4], 2)
50bf281760e0 inv: Add BIST tests for new input validation in cset 3b2558676d0e (bug #61728) Rik <rik@octave.org> parents: 30574 diff changeset	387 %!error <wrong type argument> inv ("Hello World")
50bf281760e0 inv: Add BIST tests for new input validation in cset 3b2558676d0e (bug #61728) Rik <rik@octave.org> parents: 30574 diff changeset	388 %!error <wrong type argument> inv ({1})
30609 09012191bb0c pinv: Improve input validation (Bug #61767). Antonius Burgers <arburgers@gmail.com> parents: 30590 diff changeset	389 %!error <wrong type argument> inv (true)
21110 3d0d84305600 Use err_square_matrix_required more widely. Rik <rik@octave.org> parents: 21100 diff changeset	390 %!error <must be a square matrix> inv ([1, 2; 3, 4; 5, 6])
27093 6e18f0ce268c Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs. marco.caliari@univr.it parents: 26376 diff changeset	391 %!error <inverse of the null matrix not defined> inv (sparse (2, 2, 0))
30554 117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	392 %!error <inverse of the null matrix not defined> inv (diag ([0, 0]))
117ebe363f56 Fix handling of scalar exceptional values in inv() (bug #61689) Rik <rik@octave.org> parents: 30313 diff changeset	393 %!error <inverse of the null matrix not defined> inv (diag (complex ([0, 0])))
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	394 */
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	395
23453 2eb7dc15f9fa use DEFALIAS to define inverse John W. Eaton <jwe@octave.org> parents: 23450 diff changeset	396 DEFALIAS (inverse, inv);
29958 32c3a5805893 move DEFUN and DEFMETHOD functions inside octave namespace John W. Eaton <jwe@octave.org> parents: 29359 diff changeset	397
31605 e88a07dec498 maint: Use macros to begin/end C++ namespaces. Rik <rik@octave.org> parents: 31384 diff changeset	398 OCTAVE_END_NAMESPACE(octave)

Mercurial > octave

annotate libinterp/corefcn/inv.cc @ 31605:e88a07dec498 stable