Mercurial > octave-nkf
view src/ov-null-mat.cc @ 14429:eff4a5933e28
Update %!tests in src/ directory with Octave coding conventions.
* data.cc, defaults.cc, dirfns.cc, file-io.cc, graphics.cc, mappers.cc,
oct-map.cc, octave.cc, ov-base.cc, ov-bool-mat.cc, ov-cell.cc,
ov-fcn-handle.cc, ov-fcn-inline.cc, ov-flt-re-mat.cc, ov-int16.cc, ov-int32.cc,
ov-int64.cc, ov-int8.cc, ov-null-mat.cc, ov-oncleanup.cc, ov-range.cc,
ov-re-mat.cc, ov-struct.cc, ov-typeinfo.cc, ov-uint16.cc, ov-uint32.cc,
ov-uint64.cc, ov-uint8.cc, ov.cc, pr-output.cc, pt-binop.cc, pt-eval.cc,
pt-idx.cc, pt-mat.cc, sighandlers.cc, strfns.cc, symtab.cc, syscalls.cc,
sysdep.cc, toplev.cc, utils.cc, variables.cc: Update %!tests in src/ directory
with Octave coding conventions.
author | Rik <octave@nomad.inbox5.com> |
---|---|
date | Sun, 04 Mar 2012 12:21:10 -0800 |
parents | b76f0740940e |
children |
line wrap: on
line source
/* Copyright (C) 2008-2012 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 "ov-null-mat.h" #include "ops.h" #include "defun.h" DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_null_matrix, "null_matrix", "double"); const octave_value octave_null_matrix::instance (new octave_null_matrix ()); static octave_base_value * default_null_matrix_numeric_conversion_function (const octave_base_value& a) { // The cast is not necessary? // CAST_CONV_ARG (const octave_null_matrix&); return a.empty_clone (); } octave_base_value::type_conv_info octave_null_matrix::numeric_conversion_function (void) const { return octave_base_value::type_conv_info (default_null_matrix_numeric_conversion_function, octave_matrix::static_type_id ()); } DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_null_str, "null_string", "char"); const octave_value octave_null_str::instance (new octave_null_str ()); static octave_base_value * default_null_str_numeric_conversion_function (const octave_base_value& a) { // The cast is not necessary? // CAST_CONV_ARG (const octave_null_str&); return a.empty_clone (); } octave_base_value::type_conv_info octave_null_str::numeric_conversion_function (void) const { return octave_base_value::type_conv_info (default_null_str_numeric_conversion_function, octave_char_matrix_str::static_type_id ()); } DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_null_sq_str, "null_sq_string", "char"); const octave_value octave_null_sq_str::instance (new octave_null_sq_str ()); static octave_base_value * default_null_sq_str_numeric_conversion_function (const octave_base_value& a) { // The cast is not necessary? // CAST_CONV_ARG (const octave_null_sq_str&); return a.empty_clone (); } octave_base_value::type_conv_info octave_null_sq_str::numeric_conversion_function (void) const { return octave_base_value::type_conv_info (default_null_sq_str_numeric_conversion_function, octave_char_matrix_sq_str::static_type_id ()); } DEFUN (isnull, args, , "-*- texinfo -*-\n\ @deftypefn {Built-in Function} {} isnull (@var{x})\n\ Return true if @var{x} is a special null matrix, string, or single quoted\n\ string. Indexed assignment with such a value on the right-hand side should\n\ delete array elements. This function should be used when overloading\n\ indexed assignment for user-defined classes instead of @code{isempty}, to\n\ distinguish the cases:\n\ \n\ @table @asis\n\ @item @code{A(I) = []}\n\ This should delete elements if @code{I} is nonempty.\n\ \n\ @item @code{X = []; A(I) = X}\n\ This should give an error if @code{I} is nonempty.\n\ @end table\n\ @seealso{isempty, isindex}\n\ @end deftypefn") { octave_value retval; int nargin = args.length (); if (nargin == 1 && args(0).is_defined ()) retval = args(0).is_null_value (); else print_usage (); return retval; } /* %!assert (isnull ([]), true) %!assert (isnull ([1]), false) %!assert (isnull (zeros (0,3)), false) %!assert (isnull (""), true) %!assert (isnull ("A"), false) %!assert (isnull (''), true) %!assert (isnull ('A'), false) %!test %! x = []; %! assert (isnull (x), false); */