Mercurial > octave-nkf
view scripts/signal/hanning.m @ 18840:4a4edf0f2077 nkf-ready
fix LLVM 3.4 build (bug #41061)
* configure.ac: Call new functions OCTAVE_LLVM_RAW_FD_OSTREAM_API and
OCTAVE_LLVM_LEGACY_PASSMANAGER_API, check for Verifier.h header file
* m4/acinclude.m4 (OCTAVE_LLVM_RAW_FD_OSTREAM_API): New function to
detect correct raw_fd_ostream API
* m4/acinclude.m4 (OCTAVE_LLVM_LEGACY_PASSMANAGER_API): New function
to detect legacy passmanager API
* libinterp/corefcn/jit-util.h: Use legacy passmanager namespace if
necessary
* libinterp/corefcn/pt-jit.h (class tree_jit): Use legacy passmanager
class if necessary
* libinterp/corefcn/pt-jit.cc: Include appropriate header files
* libinterp/corefcn/pt-jit.cc (tree_jit::initialize): Use legacy
passmanager if necessary
* libinterp/corefcn/pt-jit.cc (tree_jit::optimize): Use correct API
* libinterp/corefcn/jit-typeinfo.cc: Include appropriate header file
author | Stefan Mahr <dac922@gmx.de> |
---|---|
date | Sun, 11 May 2014 02:28:33 +0200 |
parents | d63878346099 |
children | 0850b5212619 |
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## Copyright (C) 1995-2013 Andreas Weingessel ## ## 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 ## <http://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {Function File} {} hanning (@var{m}) ## Return the filter coefficients of a Hanning window of length @var{m}. ## ## For a definition of this window type, see e.g., A. V. Oppenheim & ## R. W. Schafer, @cite{Discrete-Time Signal Processing}. ## @end deftypefn ## Author: AW <Andreas.Weingessel@ci.tuwien.ac.at> ## Description: Coefficients of the Hanning window function c = hanning (m) if (nargin != 1) print_usage (); endif if (! (isscalar (m) && (m == fix (m)) && (m > 0))) error ("hanning: M has to be an integer > 0"); endif if (m == 1) c = 1; else m = m - 1; c = 0.5 - 0.5 * cos (2 * pi * (0 : m)' / m); endif endfunction %!assert (hanning (1), 1); %!assert (hanning (2), zeros (2,1)); %!assert (hanning (16), fliplr (hanning (16))); %!assert (hanning (15), fliplr (hanning (15))); %!test %! N = 15; %! A = hanning (N); %! assert (A(ceil (N/2)), 1); %!error hanning () %!error hanning (0.5) %!error hanning (-1) %!error hanning (ones (1,4))