Mercurial > octave-antonio
view liboctave/numeric/floatQR.h @ 20161:65e22ba879f0
psi: add support to compute the polygamma function (kth-derivative).
* libinterp/corefcn/psi.cc: previously, only the digamma function, k == 0,
was being computed. Add support for polygamma function, add tests, and
improve documentation.
* liboctave/cruft/slatec-fn/dpsifn.f, liboctave/cruft/slatec-fn/psifn.f: the
two functions that actually compute the the polygamma functions, copied
verbatim from SLATEC, and under public domain.
* liboctave/cruft/slatec-fn/module.mk: add dpsifn.f and psifn.f to the build
system.
* liboctave/numeric/lo-specfun.cc: add new signature for function psi to
compute polygamma function that wraps the Fortran DPSIFN and PSIFN functions.
* liboctave/numeric/lo-specfun.h: declare new function and document all psi()
with doxygen.
author | Carnë Draug <carandraug@octave.org> |
---|---|
date | Sun, 03 May 2015 22:52:07 +0100 |
parents | 4197fc428c7d |
children |
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/* Copyright (C) 1994-2015 John W. Eaton Copyright (C) 2008-2009 Jaroslav Hajek 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/>. */ #if !defined (octave_floatQR_h) #define octave_floatQR_h 1 #include <iosfwd> #include "fMatrix.h" #include "fColVector.h" #include "fRowVector.h" #include "base-qr.h" class OCTAVE_API FloatQR : public base_qr<FloatMatrix> { public: FloatQR (void) : base_qr<FloatMatrix> () { } FloatQR (const FloatMatrix&, qr_type_t = qr_type_std); FloatQR (const FloatMatrix& qx, const FloatMatrix& rx) : base_qr<FloatMatrix> (qx, rx) { } FloatQR (const FloatQR& a) : base_qr<FloatMatrix> (a) { } void init (const FloatMatrix&, qr_type_t); void update (const FloatColumnVector& u, const FloatColumnVector& v); void update (const FloatMatrix& u, const FloatMatrix& v); void insert_col (const FloatColumnVector& u, octave_idx_type j); void insert_col (const FloatMatrix& u, const Array<octave_idx_type>& j); void delete_col (octave_idx_type j); void delete_col (const Array<octave_idx_type>& j); void insert_row (const FloatRowVector& u, octave_idx_type j); void delete_row (octave_idx_type j); void shift_cols (octave_idx_type i, octave_idx_type j); protected: void form (octave_idx_type n, FloatMatrix& afact, float *tau, qr_type_t qr_type); }; #endif