Mercurial > octave-antonio
view liboctave/numeric/floatQRP.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 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_floatQRP_h) #define octave_floatQRP_h 1 #include <iosfwd> #include "floatQR.h" #include "PermMatrix.h" #include "fColVector.h" class OCTAVE_API FloatQRP : public FloatQR { public: FloatQRP (void) : FloatQR (), p () { } FloatQRP (const FloatMatrix&, qr_type_t = qr_type_std); FloatQRP (const FloatQRP& a) : FloatQR (a), p (a.p) { } FloatQRP& operator = (const FloatQRP& a) { if (this != &a) { FloatQR::operator = (a); p = a.p; } return *this; } ~FloatQRP (void) { } void init (const FloatMatrix&, qr_type_t = qr_type_std); PermMatrix P (void) const { return p; } FloatRowVector Pvec (void) const; friend std::ostream& operator << (std::ostream&, const FloatQRP&); protected: PermMatrix p; }; #endif