Mercurial > octave-nkf
view libinterp/corefcn/__pchip_deriv__.cc @ 20482:c6224b4e7774
maint: Rename instances of LS_ASCII to LS_TEXT for clarity.
Octave's default save format is '-text' which is confusingly referred to in the
code base as LS_ASCII (looks like '-ascii' mode).
* ls-oct-text.cc, ls-oct-text.h: Renamed from ls-oct-ascii.[cc|h].
* ls-oct-ascii.cc, ls-oct-ascii.h: Removed files.
* libinterp/corefcn/module.mk: Add ls-oct-text.cc, ls-oct-text.h to build
system.
* load-save.h (load_save_format_type): Change first value of enum from
LS_ASCII to LS_TEXT.
* load-save.cc: Rename instances of LS_ASCII to LS_TEXT. Rename instances of
read_ascii_data to read_text_data.
* ov-base-diag.cc, ov-base-int.cc, ov-base-sparse.cc, ov-bool-mat.cc,
ov-bool.cc, ov-complex.cc, ov-cx-mat.cc ov-fcn-inline.cc, ov-float.cc,
ov-flt-complex.cc, ov-flt-cx-mat.cc, ov-flt-re-mat.cc, ov-int16.cc,
ov-int32.cc, ov-int64.cc, ov-int8.cc, ov-perm.cc, ov-re-mat.cc, ov-scalar.cc,
ov-str-mat.cc, ov-uint16.cc, ov-uint32.cc, ov-uint64.cc, ov-uint8.cc:
Use '#include "ls-oct-text.h"' rather than ls-oct-ascii.h.
ov-cell.cc, ov-class.cc, ov-fcn-handle.cc, ov-lazy-idx.cc, ov-struct.cc:
Use '#include "ls-oct-text.h"' rather than ls-oct-ascii.h.
Rename save_ascii_data to save_text_data, read_ascii_data to read_text_data.
author | Rik <rik@octave.org> |
---|---|
date | Mon, 17 Aug 2015 09:20:03 -0700 |
parents | a9574e3c6e9e |
children |
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/* Copyright (C) 2002-2015 Kai Habel 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/>. */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include "defun.h" #include "error.h" #include "gripes.h" #include "oct-obj.h" #include "utils.h" #include "f77-fcn.h" extern "C" { F77_RET_T F77_FUNC (dpchim, DPCHIM) (const octave_idx_type& n, const double *x, const double *f, double *d, const octave_idx_type &incfd, octave_idx_type *ierr); F77_RET_T F77_FUNC (pchim, PCHIM) (const octave_idx_type& n, const float *x, const float *f, float *d, const octave_idx_type& incfd, octave_idx_type *ierr); } // Wrapper for SLATEC/PCHIP function DPCHIM to calculate the derivates // for piecewise polynomials. DEFUN (__pchip_deriv__, args, , "-*- texinfo -*-\n\ @deftypefn {Built-in Function} {} __pchip_deriv__ (@var{x}, @var{y}, @var{dim})\n\ Undocumented internal function.\n\ @end deftypefn") { octave_value retval; const int nargin = args.length (); bool rows = (nargin == 3 && args(2).uint_value () == 2); if (nargin >= 2) { if (args(0).is_single_type () || args(1).is_single_type ()) { FloatColumnVector xvec (args(0).float_vector_value ()); FloatMatrix ymat (args(1).float_matrix_value ()); octave_idx_type nx = xvec.numel (); if (nx < 2) { error ("__pchip_deriv__: X must be at least of length 2"); return retval; } octave_idx_type nyr = ymat.rows (); octave_idx_type nyc = ymat.columns (); if (nx != (rows ? nyc : nyr)) { error ("__pchip_deriv__: X and Y dimension mismatch"); return retval; } FloatMatrix dmat (nyr, nyc); octave_idx_type ierr; const octave_idx_type incfd = rows ? nyr : 1; volatile const octave_idx_type inc = rows ? 1 : nyr; volatile octave_idx_type k = 0; for (volatile octave_idx_type i = (rows ? nyr : nyc); i > 0; i--) { F77_XFCN (pchim, PCHIM, (nx, xvec.data (), ymat.data () + k * inc, dmat.fortran_vec () + k * inc, incfd, &ierr)); k++; if (ierr < 0) { error ("__pchip_deriv__: PCHIM failed with ierr = %i", ierr); return retval; } } retval = dmat; } else { ColumnVector xvec (args(0).vector_value ()); Matrix ymat (args(1).matrix_value ()); octave_idx_type nx = xvec.numel (); if (nx < 2) { error ("__pchip_deriv__: X must be at least of length 2"); return retval; } octave_idx_type nyr = ymat.rows (); octave_idx_type nyc = ymat.columns (); if (nx != (rows ? nyc : nyr)) { error ("__pchip_deriv__: X and Y dimension mismatch"); return retval; } Matrix dmat (nyr, nyc); octave_idx_type ierr; const octave_idx_type incfd = rows ? nyr : 1; volatile const octave_idx_type inc = rows ? 1 : nyr; volatile octave_idx_type k = 0; for (volatile octave_idx_type i = (rows ? nyr : nyc); i > 0; i--) { F77_XFCN (dpchim, DPCHIM, (nx, xvec.data (), ymat.data () + k * inc, dmat.fortran_vec () + k * inc, incfd, &ierr)); k++; if (ierr < 0) { error ("__pchip_deriv__: DPCHIM failed with ierr = %i", ierr); return retval; } } retval = dmat; } } return retval; } /* ## No test needed for internal helper function. %!assert (1) */