Mercurial > octave-nkf
view doc/interpreter/signal.txi @ 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 | 446c46af4b42 |
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@c Copyright (C) 1996-2013 John W. Eaton @c @c This file is part of Octave. @c @c Octave is free software; you can redistribute it and/or modify it @c under the terms of the GNU General Public License as published by the @c Free Software Foundation; either version 3 of the License, or (at @c your option) any later version. @c @c Octave is distributed in the hope that it will be useful, but WITHOUT @c ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or @c FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License @c for more details. @c @c You should have received a copy of the GNU General Public License @c along with Octave; see the file COPYING. If not, see @c <http://www.gnu.org/licenses/>. @node Signal Processing @chapter Signal Processing This chapter describes the signal processing and fast Fourier transform functions available in Octave. Fast Fourier transforms are computed with the @sc{fftw} or @sc{fftpack} libraries depending on how Octave is built. @DOCSTRING(fft) @DOCSTRING(ifft) @DOCSTRING(fft2) @DOCSTRING(ifft2) @DOCSTRING(fftn) @DOCSTRING(ifftn) Octave uses the @sc{fftw} libraries to perform FFT computations. When Octave starts up and initializes the @sc{fftw} libraries, they read a system wide file (on a Unix system, it is typically @file{/etc/fftw/wisdom}) that contains information useful to speed up FFT computations. This information is called the @emph{wisdom}. The system-wide file allows wisdom to be shared between all applications using the @sc{fftw} libraries. Use the @code{fftw} function to generate and save wisdom. Using the utilities provided together with the @sc{fftw} libraries (@command{fftw-wisdom} on Unix systems), you can even add wisdom generated by Octave to the system-wide wisdom file. @DOCSTRING(fftw) @DOCSTRING(fftconv) @DOCSTRING(fftfilt) @DOCSTRING(filter) @DOCSTRING(filter2) @DOCSTRING(freqz) @DOCSTRING(freqz_plot) @DOCSTRING(sinc) @DOCSTRING(unwrap) @c FIXME: someone needs to organize these ... @DOCSTRING(arch_fit) @DOCSTRING(arch_rnd) @DOCSTRING(arch_test) @DOCSTRING(arma_rnd) @DOCSTRING(autoreg_matrix) @DOCSTRING(bartlett) @DOCSTRING(blackman) @DOCSTRING(detrend) @DOCSTRING(diffpara) @DOCSTRING(durbinlevinson) @DOCSTRING(fftshift) @DOCSTRING(ifftshift) @DOCSTRING(fractdiff) @DOCSTRING(hamming) @DOCSTRING(hanning) @DOCSTRING(hurst) @DOCSTRING(pchip) @DOCSTRING(periodogram) @DOCSTRING(sinetone) @DOCSTRING(sinewave) @DOCSTRING(spectral_adf) @DOCSTRING(spectral_xdf) @DOCSTRING(spencer) @DOCSTRING(stft) @DOCSTRING(synthesis) @DOCSTRING(yulewalker)