Mercurial > hg > octave-lyh
annotate scripts/polynomial/polyreduce.m @ 13141:e81ddf9cacd5
maint: untabify and remove trailing whitespace from source files
* bicg.m, gmres.m, pkg.m: Untabify and remove trailing whitespace.
* libcruft/Makefile.am, libcruft/blas-xtra/cdotc3.f,
libcruft/blas-xtra/cmatm3.f, libcruft/blas-xtra/ddot3.f,
libcruft/blas-xtra/dmatm3.f, libcruft/blas-xtra/sdot3.f,
libcruft/blas-xtra/smatm3.f, libcruft/blas-xtra/zdotc3.f,
libcruft/blas-xtra/zmatm3.f, libcruft/lapack-xtra/crsf2csf.f,
libcruft/lapack-xtra/zrsf2csf.f, liboctave/Array.cc,
liboctave/DASPK-opts.in, liboctave/DASRT-opts.in,
liboctave/DASSL-opts.in, liboctave/LSODE-opts.in,
liboctave/Makefile.a,mliboctave/Quad-opts.in,
liboctave/Sparse-perm-op-defs.h,
scripts/Makefile.a,mscripts/deprecated/glpkmex.m,
scripts/general/blkdiag.m, scripts/general/interp1.m,
scripts/general/profshow.m, scripts/general/quadl.m,
scripts/general/triplequad.m, scripts/help/__makeinfo__.m,
scripts/io/strread.m, scripts/io/textread.m, scripts/io/textscan.m,
scripts/linear-algebra/rank.m, scripts/miscellaneous/gzip.m,
scripts/miscellaneous/private/__xzip__.m,
scripts/miscellaneous/tempdir.m, scripts/miscellaneous/unpack.m,
scripts/pkg/pkg.m, scripts/plot/allchild.m, scripts/plot/ancestor.m,
scripts/plot/cla.m, scripts/plot/clf.m, scripts/plot/findall.m,
scripts/plot/findobj.m, scripts/plot/gca.m, scripts/plot/gcf.m,
scripts/plot/hggroup.m, scripts/plot/isfigure.m,
scripts/plot/ishghandle.m, scripts/plot/legend.m,
scripts/plot/line.m, scripts/plot/loglog.m, scripts/plot/patch.m,
scripts/plot/print.m, scripts/plot/private/__quiver__.m,
scripts/plot/private/__scatter__.m, scripts/plot/rectangle.m,
scripts/plot/semilogx.m, scripts/plot/semilogy.m,
scripts/plot/surface.m, scripts/plot/text.m, scripts/plot/title.m,
scripts/plot/trisurf.m, scripts/plot/view.m, scripts/plot/whitebg.m,
scripts/plot/xlabel.m, scripts/plot/xlim.m, scripts/plot/ylabel.m,
scripts/plot/ylim.m, scripts/plot/zlabel.m, scripts/plot/zlim.m,
scripts/polynomial/mkpp.m, scripts/polynomial/polygcd.m,
scripts/polynomial/ppint.m, scripts/polynomial/ppjumps.m,
scripts/polynomial/ppval.m, scripts/set/setxor.m,
scripts/sparse/bicgstab.m, scripts/sparse/cgs.m,
scripts/sparse/spconvert.m, scripts/specfun/nthroot.m,
scripts/strings/strmatch.m, scripts/strings/untabify.m,
scripts/testfun/demo.m, scripts/testfun/example.m,
src/DLD-FUNCTIONS/filter.cc, src/DLD-FUNCTIONS/mgorth.cc,
src/DLD-FUNCTIONS/quadcc.cc, src/DLD-FUNCTIONS/str2double.cc,
src/Makefile.a,msrc/gl-render.cc, src/gl2ps-renderer.cc,
src/graphics.cc, src/octave-config.cc.in, src/octave-config.in,
src/ov-class.h, src/ov-fcn.h, src/profiler.cc, src/profiler.h,
src/pt-binop.cc, src/pt-unop.cc, src/symtab.cc, src/txt-eng-ft.cc:
Remove trailing whitespace.
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Thu, 15 Sep 2011 12:51:10 -0400 |
| parents | d0b799dafede |
| children | 663594b481e5 |
| rev | line source |
|---|---|
| 11523 | 1 ## Copyright (C) 1994-2011 John W. Eaton |
| 2313 | 2 ## |
| 3 ## This file is part of Octave. | |
| 4 ## | |
| 5 ## Octave is free software; you can redistribute it and/or modify it | |
| 6 ## under the terms of the GNU General Public License as published by | |
| 7016 | 7 ## the Free Software Foundation; either version 3 of the License, or (at |
| 8 ## your option) any later version. | |
| 2313 | 9 ## |
| 10 ## Octave is distributed in the hope that it will be useful, but | |
| 11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 ## General Public License for more details. | |
| 14 ## | |
| 15 ## You should have received a copy of the GNU General Public License | |
| 7016 | 16 ## along with Octave; see the file COPYING. If not, see |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 904 | 18 |
| 3368 | 19 ## -*- texinfo -*- |
| 20 ## @deftypefn {Function File} {} polyreduce (@var{c}) | |
|
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21 ## Reduce a polynomial coefficient vector to a minimum number of terms by |
| 3368 | 22 ## stripping off any leading zeros. |
| 5642 | 23 ## @seealso{poly, roots, conv, deconv, residue, filter, polyval, |
|
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24 ## polyvalm, polyderiv, polyint} |
| 3368 | 25 ## @end deftypefn |
| 1025 | 26 |
| 3202 | 27 ## Author: Tony Richardson <arichard@stark.cc.oh.us> |
| 2312 | 28 ## Created: June 1994 |
| 29 ## Adapted-By: jwe | |
| 561 | 30 |
|
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31 function p = polyreduce (c) |
| 1025 | 32 |
| 2716 | 33 if (nargin != 1) |
| 6046 | 34 print_usage (); |
| 2716 | 35 endif |
| 561 | 36 |
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37 if (!isvector (c) || isempty (c)) |
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38 error ("polyreduce: C must be a non-empty vector"); |
| 2716 | 39 endif |
| 561 | 40 |
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41 if (! isempty (c)) |
| 1178 | 42 |
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43 index = find (c != 0); |
| 561 | 44 |
| 3617 | 45 if (isempty (index)) |
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46 |
| 3617 | 47 p = 0; |
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48 |
| 3617 | 49 else |
| 2716 | 50 |
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51 p = c(index (1):length (c)); |
| 1178 | 52 |
| 53 endif | |
| 54 | |
| 561 | 55 endif |
| 1025 | 56 |
| 561 | 57 endfunction |
| 7411 | 58 |
| 59 %!assert(all (all (polyreduce ([0, 0, 1, 2, 3]) == [1, 2, 3]))); | |
| 60 | |
| 61 %!assert(all (all (polyreduce ([1, 2, 3, 0, 0]) == [1, 2, 3, 0, 0]))); | |
| 62 | |
| 63 %!assert(all (all (polyreduce ([1, 0, 3]) == [1, 0, 3]))); | |
| 64 | |
| 65 %!error polyreduce ([1, 2; 3, 4]); | |
| 66 |