Mercurial > octave
view libinterp/corefcn/dot.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 | 32d2b6604a9f |
children | dfa5d9c3ae72 597f3ee61a48 |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 2009-2022 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 "lo-blas-proto.h" #include "mx-base.h" #include "builtin-defun-decls.h" #include "defun.h" #include "error.h" #include "parse.h" OCTAVE_BEGIN_NAMESPACE(octave) // FIXME: input 'y' is no longer necessary (2/5/2022). // At some point it would be better to change all occurrences of // get_red_dims to eliminate this input parameter. static void get_red_dims (const dim_vector& x, const dim_vector& /* y */, int dim, dim_vector& z, F77_INT& m, F77_INT& n, F77_INT& k) { int nd = x.ndims (); z = dim_vector::alloc (nd); octave_idx_type tmp_m = 1; octave_idx_type tmp_n = 1; octave_idx_type tmp_k = 1; for (int i = 0; i < nd; i++) { if (i < dim) { z(i) = x(i); tmp_m *= x(i); } else if (i > dim) { z(i) = x(i); tmp_n *= x(i); } else { z(i) = 1; tmp_k = x(i); } } m = to_f77_int (tmp_m); n = to_f77_int (tmp_n); k = to_f77_int (tmp_k); } DEFUN (dot, args, , doc: /* -*- texinfo -*- @deftypefn {} {@var{z} =} dot (@var{x}, @var{y}) @deftypefnx {} {@var{z} =} dot (@var{x}, @var{y}, @var{dim}) Compute the dot product of two vectors. If @var{x} and @var{y} are matrices, calculate the dot products along the first non-singleton dimension. If the optional argument @var{dim} is given, calculate the dot products along this dimension. Implementation Note: This is equivalent to @code{sum (conj (@var{X}) .* @var{Y}, @var{dim})}, but avoids forming a temporary array and is faster. When @var{X} and @var{Y} are column vectors, the result is equivalent to @code{@var{X}' * @var{Y}}. Although, @code{dot} is defined for integer arrays, the output may differ from the expected result due to the limited range of integer objects. @seealso{cross, divergence} @end deftypefn */) { int nargin = args.length (); if (nargin < 2 || nargin > 3) print_usage (); octave_value retval; octave_value argx = args(0); octave_value argy = args(1); if (! argx.isnumeric () || ! argy.isnumeric ()) error ("dot: X and Y must be numeric"); dim_vector dimx = argx.dims (); dim_vector dimy = argy.dims (); bool match = dimx == dimy; if (! match && nargin == 2 && dimx.isvector () && dimy.isvector ()) { // Change to column vectors. dimx = dimx.redim (1); argx = argx.reshape (dimx); dimy = dimy.redim (1); argy = argy.reshape (dimy); match = dimx == dimy; } if (! match) error ("dot: sizes of X and Y must match"); int dim; if (nargin == 2) dim = dimx.first_non_singleton (); else dim = args(2).int_value (true) - 1; if (dim < 0) error ("dot: DIM must be a valid dimension"); F77_INT m, n, k; dim_vector dimz; if (argx.iscomplex () || argy.iscomplex ()) { if (argx.is_single_type () || argy.is_single_type ()) { FloatComplexNDArray x = argx.float_complex_array_value (); FloatComplexNDArray y = argy.float_complex_array_value (); get_red_dims (dimx, dimy, dim, dimz, m, n, k); FloatComplexNDArray z (dimz); F77_XFCN (cdotc3, CDOTC3, (m, n, k, F77_CONST_CMPLX_ARG (x.data ()), F77_CONST_CMPLX_ARG (y.data ()), F77_CMPLX_ARG (z.fortran_vec ()))); retval = z; } else { ComplexNDArray x = argx.complex_array_value (); ComplexNDArray y = argy.complex_array_value (); get_red_dims (dimx, dimy, dim, dimz, m, n, k); ComplexNDArray z (dimz); F77_XFCN (zdotc3, ZDOTC3, (m, n, k, F77_CONST_DBLE_CMPLX_ARG (x.data ()), F77_CONST_DBLE_CMPLX_ARG (y.data ()), F77_DBLE_CMPLX_ARG (z.fortran_vec ()))); retval = z; } } else if (argx.isfloat () && argy.isfloat ()) { if (argx.is_single_type () || argy.is_single_type ()) { FloatNDArray x = argx.float_array_value (); FloatNDArray y = argy.float_array_value (); get_red_dims (dimx, dimy, dim, dimz, m, n, k); FloatNDArray z (dimz); F77_XFCN (sdot3, SDOT3, (m, n, k, x.data (), y.data (), z.fortran_vec ())); retval = z; } else { NDArray x = argx.array_value (); NDArray y = argy.array_value (); get_red_dims (dimx, dimy, dim, dimz, m, n, k); NDArray z (dimz); F77_XFCN (ddot3, DDOT3, (m, n, k, x.data (), y.data (), z.fortran_vec ())); retval = z; } } else { // Non-optimized evaluation. // FIXME: This may *not* do what the user expects. // It might be more useful to issue a warning, or even an error, instead // of calculating possibly garbage results. // Think of the dot product of two int8 vectors where the multiplications // exceed intmax. octave_value_list tmp; tmp(1) = dim + 1; tmp(0) = binary_op (octave_value::op_el_mul, argx, argy); tmp = Fsum (tmp, 1); if (! tmp.empty ()) retval = tmp(0); } return retval; } /* %!assert (dot ([1, 2], [2, 3]), 8) %!test %! x = [2, 1; 2, 1]; %! y = [-0.5, 2; 0.5, -2]; %! assert (dot (x, y), [0 0]); %! assert (dot (single (x), single (y)), single ([0 0])); %!test %! x = [1+i, 3-i; 1-i, 3-i]; %! assert (dot (x, x), [4, 20]); %! assert (dot (single (x), single (x)), single ([4, 20])); %!test %! x = int8 ([1, 2]); %! y = int8 ([2, 3]); %! assert (dot (x, y), 8); %!test %! x = int8 ([1, 2; 3, 4]); %! y = int8 ([5, 6; 7, 8]); %! assert (dot (x, y), [26 44]); %! assert (dot (x, y, 2), [17; 53]); %! assert (dot (x, y, 3), [5 12; 21 32]); ## This is, perhaps, surprising. Integer maximums and saturation mechanics ## prevent accurate value from being calculated. %!test %! x = int8 ([127]); %! assert (dot (x, x), 127); ## Test input validation %!error dot () %!error dot (1) %!error dot (1,2,3,4) %!error <X and Y must be numeric> dot ({1,2}, [3,4]) %!error <X and Y must be numeric> dot ([1,2], {3,4}) %!error <sizes of X and Y must match> dot ([1 2], [1 2 3]) %!error <sizes of X and Y must match> dot ([1 2]', [1 2 3]') %!error <sizes of X and Y must match> dot (ones (2,2), ones (2,3)) %!error <DIM must be a valid dimension> dot ([1 2], [1 2], 0) */ template <typename T> static void blkmm_internal (const T& x, const T& y, T& z, F77_INT m, F77_INT n, F77_INT k, F77_INT np); template <> void blkmm_internal (const FloatComplexNDArray& x, const FloatComplexNDArray& y, FloatComplexNDArray& z, F77_INT m, F77_INT n, F77_INT k, F77_INT np) { F77_XFCN (cmatm3, CMATM3, (m, n, k, np, F77_CONST_CMPLX_ARG (x.data ()), F77_CONST_CMPLX_ARG (y.data ()), F77_CMPLX_ARG (z.fortran_vec ()))); } template <> void blkmm_internal (const ComplexNDArray& x, const ComplexNDArray& y, ComplexNDArray& z, F77_INT m, F77_INT n, F77_INT k, F77_INT np) { F77_XFCN (zmatm3, ZMATM3, (m, n, k, np, F77_CONST_DBLE_CMPLX_ARG (x.data ()), F77_CONST_DBLE_CMPLX_ARG (y.data ()), F77_DBLE_CMPLX_ARG (z.fortran_vec ()))); } template <> void blkmm_internal (const FloatNDArray& x, const FloatNDArray& y, FloatNDArray& z, F77_INT m, F77_INT n, F77_INT k, F77_INT np) { F77_XFCN (smatm3, SMATM3, (m, n, k, np, x.data (), y.data (), z.fortran_vec ())); } template <> void blkmm_internal (const NDArray& x, const NDArray& y, NDArray& z, F77_INT m, F77_INT n, F77_INT k, F77_INT np) { F77_XFCN (dmatm3, DMATM3, (m, n, k, np, x.data (), y.data (), z.fortran_vec ())); } static void get_blkmm_dims (const dim_vector& dimx, const dim_vector& dimy, F77_INT& m, F77_INT& n, F77_INT& k, F77_INT& np, dim_vector& dimz) { int nd = dimx.ndims (); m = to_f77_int (dimx(0)); k = to_f77_int (dimx(1)); n = to_f77_int (dimy(1)); octave_idx_type tmp_np = 1; bool match = ((dimy(0) == k) && (nd == dimy.ndims ())); dimz = dim_vector::alloc (nd); dimz(0) = m; dimz(1) = n; for (int i = 2; match && i < nd; i++) { match = (dimx(i) == dimy(i)); dimz(i) = dimx(i); tmp_np *= dimz(i); } np = to_f77_int (tmp_np); if (! match) error ("blkmm: A and B dimensions don't match: (%s) and (%s)", dimx.str ().c_str (), dimy.str ().c_str ()); } template <typename T> T do_blkmm (const octave_value& xov, const octave_value& yov) { const T x = octave_value_extract<T> (xov); const T y = octave_value_extract<T> (yov); F77_INT m, n, k, np; dim_vector dimz; get_blkmm_dims (x.dims (), y.dims (), m, n, k, np, dimz); T z (dimz); if (n != 0 && m != 0) blkmm_internal<T> (x, y, z, m, n, k, np); return z; } DEFUN (blkmm, args, , doc: /* -*- texinfo -*- @deftypefn {} {@var{C} =} blkmm (@var{A}, @var{B}) Compute products of matrix blocks. The blocks are given as 2-dimensional subarrays of the arrays @var{A}, @var{B}. The size of @var{A} must have the form @code{[m,k,@dots{}]} and size of @var{B} must be @code{[k,n,@dots{}]}. The result is then of size @code{[m,n,@dots{}]} and is computed as follows: @example @group for i = 1:prod (size (@var{A})(3:end)) @var{C}(:,:,i) = @var{A}(:,:,i) * @var{B}(:,:,i) endfor @end group @end example @end deftypefn */) { if (args.length () != 2) print_usage (); octave_value retval; octave_value argx = args(0); octave_value argy = args(1); if (! argx.isnumeric () || ! argy.isnumeric ()) error ("blkmm: A and B must be numeric"); if (argx.iscomplex () || argy.iscomplex ()) { if (argx.is_single_type () || argy.is_single_type ()) retval = do_blkmm<FloatComplexNDArray> (argx, argy); else retval = do_blkmm<ComplexNDArray> (argx, argy); } else { if (argx.is_single_type () || argy.is_single_type ()) retval = do_blkmm<FloatNDArray> (argx, argy); else retval = do_blkmm<NDArray> (argx, argy); } return retval; } /* %!test %! x(:,:,1) = [1 2; 3 4]; %! x(:,:,2) = [1 1; 1 1]; %! z(:,:,1) = [7 10; 15 22]; %! z(:,:,2) = [2 2; 2 2]; %! assert (blkmm (x,x), z); %! assert (blkmm (single (x), single (x)), single (z)); %! assert (blkmm (x, single (x)), single (z)); %!test %! x(:,:,1) = [1 2; 3 4]; %! x(:,:,2) = [1i 1i; 1i 1i]; %! z(:,:,1) = [7 10; 15 22]; %! z(:,:,2) = [-2 -2; -2 -2]; %! assert (blkmm (x,x), z); %! assert (blkmm (single (x), single (x)), single (z)); %! assert (blkmm (x, single (x)), single (z)); %!test <*54261> %! x = ones (0, 3, 3); %! y = ones (3, 5, 3); %! z = blkmm (x,y); %! assert (size (z), [0, 5, 3]); %! x = ones (1, 3, 3); %! y = ones (3, 0, 3); %! z = blkmm (x,y); %! assert (size (z), [1, 0, 3]); ## Test input validation %!error blkmm () %!error blkmm (1) %!error blkmm (1,2,3) %!error <A and B must be numeric> blkmm ({1,2}, [3,4]) %!error <A and B must be numeric> blkmm ([3,4], {1,2}) %!error <A and B dimensions don't match> blkmm (ones (2,2), ones (3,3)) */ OCTAVE_END_NAMESPACE(octave)