Mercurial > octave
changeset 30559:841a10208c38
doc: Use TF for output variable in documentation for isXXX functions in libinterp/ directory.
* data.cc, debug.cc, graphics.cc, mappers.cc, sparse.cc, strfns.cc,
sysdep.cc, utils.cc, variables.cc, ov-cell.cc, ov-class.cc, ov-fcn-handle.cc,
ov-java.cc, ov-null-mat.cc, ov-struct.cc, ov-usr-fcn.cc, ov.cc, octave.cc:
Use TF for output variable in documentation for isXXX functions in libinterp/
directory.
| author | Rik <rik@octave.org> |
|---|---|
| date | Mon, 27 Dec 2021 19:53:35 -0800 |
| parents | 83aeaba707d8 |
| children | 9ed1cf9e446e |
| files | libinterp/corefcn/data.cc libinterp/corefcn/debug.cc libinterp/corefcn/graphics.cc libinterp/corefcn/mappers.cc libinterp/corefcn/sparse.cc libinterp/corefcn/strfns.cc libinterp/corefcn/sysdep.cc libinterp/corefcn/utils.cc libinterp/corefcn/variables.cc libinterp/octave-value/ov-cell.cc libinterp/octave-value/ov-class.cc libinterp/octave-value/ov-fcn-handle.cc libinterp/octave-value/ov-java.cc libinterp/octave-value/ov-null-mat.cc libinterp/octave-value/ov-struct.cc libinterp/octave-value/ov-usr-fcn.cc libinterp/octave-value/ov.cc libinterp/octave.cc |
| diffstat | 18 files changed, 59 insertions(+), 59 deletions(-) [+] |
line wrap: on
line diff
--- a/libinterp/corefcn/data.cc Mon Dec 27 16:07:08 2021 -0800 +++ b/libinterp/corefcn/data.cc Mon Dec 27 19:53:35 2021 -0800 @@ -3315,8 +3315,8 @@ DEFUN (islogical, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} islogical (@var{x}) -@deftypefnx {} {} isbool (@var{x}) +@deftypefn {} {@var{tf} =} islogical (@var{x}) +@deftypefnx {} {@var{tf} =} isbool (@var{x}) Return true if @var{x} is a logical object. @seealso{ischar, isfloat, isinteger, isstring, isnumeric, isa} @end deftypefn */) @@ -3345,7 +3345,7 @@ DEFUN (isinteger, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isinteger (@var{x}) +@deftypefn {} {@var{tf} =} isinteger (@var{x}) Return true if @var{x} is an integer object (int8, uint8, int16, etc.). Note that @w{@code{isinteger (14)}} is false because numeric constants in @@ -3403,7 +3403,7 @@ DEFUN (iscomplex, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} iscomplex (@var{x}) +@deftypefn {} {@var{tf} =} iscomplex (@var{x}) Return true if @var{x} is a complex-valued numeric object. @seealso{isreal, isnumeric, ischar, isfloat, islogical, isstring, isa} @end deftypefn */) @@ -3433,7 +3433,7 @@ DEFUN (isfloat, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isfloat (@var{x}) +@deftypefn {} {@var{tf} =} isfloat (@var{x}) Return true if @var{x} is a floating-point numeric object. Objects of class double or single are floating-point objects. @@ -3758,7 +3758,7 @@ DEFUN (isreal, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isreal (@var{x}) +@deftypefn {} {@var{tf} =} isreal (@var{x}) Return true if @var{x} is a non-complex matrix or scalar. For compatibility with @sc{matlab}, this includes logical and character @@ -3774,7 +3774,7 @@ DEFUN (isempty, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isempty (@var{a}) +@deftypefn {} {@var{tf} =} isempty (@var{a}) Return true if @var{a} is an empty matrix (any one of its dimensions is zero). @seealso{isnull, isa} @@ -3793,7 +3793,7 @@ DEFUN (isnumeric, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isnumeric (@var{x}) +@deftypefn {} {@var{tf} =} isnumeric (@var{x}) Return true if @var{x} is a numeric object, i.e., an integer, real, or complex array. @@ -3826,7 +3826,7 @@ DEFUN (isscalar, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isscalar (@var{x}) +@deftypefn {} {@var{tf} =} isscalar (@var{x}) Return true if @var{x} is a scalar. A scalar is an object with two dimensions for which @code{size (@var{x})} @@ -3865,7 +3865,7 @@ DEFUN (isvector, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isvector (@var{x}) +@deftypefn {} {@var{tf} =} isvector (@var{x}) Return true if @var{x} is a vector. A vector is a 2-D array where one of the dimensions is equal to 1 (either @@ -3906,7 +3906,7 @@ DEFUN (isrow, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isrow (@var{x}) +@deftypefn {} {@var{tf} =} isrow (@var{x}) Return true if @var{x} is a row vector. A row vector is a 2-D array for which @code{size (@var{x})} returns @@ -3955,7 +3955,7 @@ DEFUN (iscolumn, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} iscolumn (@var{x}) +@deftypefn {} {@var{tf} =} iscolumn (@var{x}) Return true if @var{x} is a column vector. A column vector is a 2-D array for which @code{size (@var{x})} returns @@ -4004,7 +4004,7 @@ DEFUN (ismatrix, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} ismatrix (@var{x}) +@deftypefn {} {@var{tf} =} ismatrix (@var{x}) Return true if @var{x} is a 2-D array. A matrix is an object with two dimensions (@code{ndims (@var{x}) == 2}) for @@ -4053,7 +4053,7 @@ DEFUN (issquare, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} issquare (@var{x}) +@deftypefn {} {@var{tf} =} issquare (@var{x}) Return true if @var{x} is a 2-D square array. A square array is a 2-D object for which @code{size (@var{x})} returns @@ -7327,9 +7327,9 @@ DEFUN (issorted, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} issorted (@var{a}) -@deftypefnx {} {} issorted (@var{a}, @var{mode}) -@deftypefnx {} {} issorted (@var{a}, "rows", @var{mode}) +@deftypefn {} {@var{tf} =} issorted (@var{a}) +@deftypefnx {} {@var{tf} =} issorted (@var{a}, @var{mode}) +@deftypefnx {} {@var{tf} =} issorted (@var{a}, "rows", @var{mode}) Return true if the array is sorted according to @var{mode}, which may be either @qcode{"ascend"}, @qcode{"descend"}, or @qcode{"either"}.
--- a/libinterp/corefcn/debug.cc Mon Dec 27 16:07:08 2021 -0800 +++ b/libinterp/corefcn/debug.cc Mon Dec 27 19:53:35 2021 -0800 @@ -1171,7 +1171,7 @@ DEFMETHOD (isdebugmode, interp, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isdebugmode () +@deftypefn {} {@var{tf} =} isdebugmode () Return true if in debugging mode, otherwise false. @seealso{dbwhere, dbstack, dbstatus} @end deftypefn */)
--- a/libinterp/corefcn/graphics.cc Mon Dec 27 16:07:08 2021 -0800 +++ b/libinterp/corefcn/graphics.cc Mon Dec 27 19:53:35 2021 -0800 @@ -12650,7 +12650,7 @@ DEFMETHOD (ishghandle, interp, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} ishghandle (@var{h}) +@deftypefn {} {@var{tf} =} ishghandle (@var{h}) Return true if @var{h} is a graphics handle and false otherwise. @var{h} may also be a matrix of handles in which case a logical array is
--- a/libinterp/corefcn/mappers.cc Mon Dec 27 16:07:08 2021 -0800 +++ b/libinterp/corefcn/mappers.cc Mon Dec 27 19:53:35 2021 -0800 @@ -1013,7 +1013,7 @@ DEFUN (isfinite, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isfinite (@var{x}) +@deftypefn {} {@var{tf} =} isfinite (@var{x}) Return a logical array which is true where the elements of @var{x} are finite values and false where they are not. @@ -1215,7 +1215,7 @@ DEFUNX ("isalnum", Fisalnum, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isalnum (@var{s}) +@deftypefn {} {@var{tf} =} isalnum (@var{s}) Return a logical array which is true where the elements of @var{s} are letters or digits and false where they are not. @@ -1245,7 +1245,7 @@ DEFUNX ("isalpha", Fisalpha, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isalpha (@var{s}) +@deftypefn {} {@var{tf} =} isalpha (@var{s}) Return a logical array which is true where the elements of @var{s} are letters and false where they are not. @@ -1274,7 +1274,7 @@ DEFUNX ("isascii", Fisascii, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isascii (@var{s}) +@deftypefn {} {@var{tf} =} isascii (@var{s}) Return a logical array which is true where the elements of @var{s} are ASCII characters (in the range 0 to 127 decimal) and false where they are not. @@ -1298,7 +1298,7 @@ DEFUNX ("iscntrl", Fiscntrl, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} iscntrl (@var{s}) +@deftypefn {} {@var{tf} =} iscntrl (@var{s}) Return a logical array which is true where the elements of @var{s} are control characters and false where they are not. @seealso{ispunct, isspace, isalpha, isdigit} @@ -1324,7 +1324,7 @@ DEFUNX ("isdigit", Fisdigit, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isdigit (@var{s}) +@deftypefn {} {@var{tf} =} isdigit (@var{s}) Return a logical array which is true where the elements of @var{s} are decimal digits (0-9) and false where they are not. @seealso{isxdigit, isalpha, isletter, ispunct, isspace, iscntrl} @@ -1350,7 +1350,7 @@ DEFUN (isinf, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isinf (@var{x}) +@deftypefn {} {@var{tf} =} isinf (@var{x}) Return a logical array which is true where the elements of @var{x} are infinite and false where they are not. @@ -1393,7 +1393,7 @@ DEFUNX ("isgraph", Fisgraph, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isgraph (@var{s}) +@deftypefn {} {@var{tf} =} isgraph (@var{s}) Return a logical array which is true where the elements of @var{s} are printable characters (but not the space character) and false where they are not. @@ -1420,7 +1420,7 @@ DEFUNX ("islower", Fislower, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} islower (@var{s}) +@deftypefn {} {@var{tf} =} islower (@var{s}) Return a logical array which is true where the elements of @var{s} are lowercase letters and false where they are not. @seealso{isupper, isalpha, isletter, isalnum} @@ -1446,7 +1446,7 @@ DEFUN (isna, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isna (@var{x}) +@deftypefn {} {@var{tf} =} isna (@var{x}) Return a logical array which is true where the elements of @var{x} are NA (missing) values and false where they are not. @@ -1488,7 +1488,7 @@ DEFUN (isnan, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isnan (@var{x}) +@deftypefn {} {@var{tf} =} isnan (@var{x}) Return a logical array which is true where the elements of @var{x} are NaN values and false where they are not. @@ -1531,7 +1531,7 @@ DEFUNX ("isprint", Fisprint, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isprint (@var{s}) +@deftypefn {} {@var{tf} =} isprint (@var{s}) Return a logical array which is true where the elements of @var{s} are printable characters (including the space character) and false where they are not. @@ -1558,7 +1558,7 @@ DEFUNX ("ispunct", Fispunct, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} ispunct (@var{s}) +@deftypefn {} {@var{tf} =} ispunct (@var{s}) Return a logical array which is true where the elements of @var{s} are punctuation characters and false where they are not. @seealso{isalpha, isdigit, isspace, iscntrl} @@ -1587,7 +1587,7 @@ DEFUNX ("isspace", Fisspace, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isspace (@var{s}) +@deftypefn {} {@var{tf} =} isspace (@var{s}) Return a logical array which is true where the elements of @var{s} are whitespace characters (space, formfeed, newline, carriage return, tab, and vertical tab) and false where they are not. @@ -1614,7 +1614,7 @@ DEFUNX ("isupper", Fisupper, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isupper (@var{s}) +@deftypefn {} {@var{tf} =} isupper (@var{s}) Return a logical array which is true where the elements of @var{s} are uppercase letters and false where they are not. @seealso{islower, isalpha, isletter, isalnum} @@ -1640,7 +1640,7 @@ DEFUNX ("isxdigit", Fisxdigit, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isxdigit (@var{s}) +@deftypefn {} {@var{tf} =} isxdigit (@var{s}) Return a logical array which is true where the elements of @var{s} are hexadecimal digits (0-9 and @nospell{a-fA-F}). @seealso{isdigit}
--- a/libinterp/corefcn/sparse.cc Mon Dec 27 16:07:08 2021 -0800 +++ b/libinterp/corefcn/sparse.cc Mon Dec 27 19:53:35 2021 -0800 @@ -46,7 +46,7 @@ DEFUN (issparse, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} issparse (@var{x}) +@deftypefn {} {@var{tf} =} issparse (@var{x}) Return true if @var{x} is a sparse matrix. @seealso{ismatrix} @end deftypefn */)
--- a/libinterp/corefcn/strfns.cc Mon Dec 27 16:07:08 2021 -0800 +++ b/libinterp/corefcn/strfns.cc Mon Dec 27 19:53:35 2021 -0800 @@ -290,7 +290,7 @@ DEFUN (ischar, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} ischar (@var{x}) +@deftypefn {} {@var{tf} =} ischar (@var{x}) Return true if @var{x} is a character array. @seealso{isfloat, isinteger, islogical, isnumeric, isstring, iscellstr, isa} @end deftypefn */)
--- a/libinterp/corefcn/sysdep.cc Mon Dec 27 16:07:08 2021 -0800 +++ b/libinterp/corefcn/sysdep.cc Mon Dec 27 19:53:35 2021 -0800 @@ -1361,7 +1361,7 @@ DEFUN (isieee, , , doc: /* -*- texinfo -*- -@deftypefn {} {} isieee () +@deftypefn {} {@var{tf} =} isieee () Return true if your computer @emph{claims} to conform to the IEEE standard for floating point calculations.
--- a/libinterp/corefcn/utils.cc Mon Dec 27 16:07:08 2021 -0800 +++ b/libinterp/corefcn/utils.cc Mon Dec 27 19:53:35 2021 -0800 @@ -93,7 +93,7 @@ DEFUN (isvarname, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isvarname (@var{name}) +@deftypefn {} {@var{tf} =} isvarname (@var{name}) Return true if @var{name} is a valid variable name. A valid variable name is composed of letters, digits, and underscores ("_"), @@ -1099,7 +1099,7 @@ DEFUN (is_absolute_filename, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} is_absolute_filename (@var{file}) +@deftypefn {} {@var{tf} =} is_absolute_filename (@var{file}) Return true if @var{file} is an absolute filename. @seealso{is_rooted_relative_filename, make_absolute_filename, isfolder} @end deftypefn */) @@ -1120,7 +1120,7 @@ DEFUN (is_rooted_relative_filename, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} is_rooted_relative_filename (@var{file}) +@deftypefn {} {@var{tf} =} is_rooted_relative_filename (@var{file}) Return true if @var{file} is a rooted-relative filename. @seealso{is_absolute_filename, make_absolute_filename, isfolder} @end deftypefn */) @@ -1629,8 +1629,8 @@ DEFMETHOD (isindex, interp, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isindex (@var{ind}) -@deftypefnx {} {} isindex (@var{ind}, @var{n}) +@deftypefn {} {@var{tf} =} isindex (@var{ind}) +@deftypefnx {} {@var{tf} =} isindex (@var{ind}, @var{n}) Return true if @var{ind} is a valid index. Valid indices are either positive integers (although possibly of real data @@ -1769,7 +1769,7 @@ DEFUN (isstudent, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isstudent () +@deftypefn {} {@var{tf} =} isstudent () Return true if running in the student edition of @sc{matlab}. @code{isstudent} always returns false in Octave.
--- a/libinterp/corefcn/variables.cc Mon Dec 27 16:07:08 2021 -0800 +++ b/libinterp/corefcn/variables.cc Mon Dec 27 19:53:35 2021 -0800 @@ -124,7 +124,7 @@ DEFMETHOD (isglobal, interp, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isglobal (@var{name}) +@deftypefn {} {@var{tf} =} isglobal (@var{name}) Return true if @var{name} is a globally visible variable. For example:
--- a/libinterp/octave-value/ov-cell.cc Mon Dec 27 16:07:08 2021 -0800 +++ b/libinterp/octave-value/ov-cell.cc Mon Dec 27 19:53:35 2021 -0800 @@ -1224,7 +1224,7 @@ DEFUN (iscell, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} iscell (@var{x}) +@deftypefn {} {@var{tf} =} iscell (@var{x}) Return true if @var{x} is a cell array object. @seealso{ismatrix, isstruct, iscellstr, isa} @end deftypefn */) @@ -1290,7 +1290,7 @@ DEFUN (iscellstr, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} iscellstr (@var{cell}) +@deftypefn {} {@var{tf} =} iscellstr (@var{cell}) Return true if every element of the cell array @var{cell} is a character string. @seealso{ischar, isstring}
--- a/libinterp/octave-value/ov-class.cc Mon Dec 27 16:07:08 2021 -0800 +++ b/libinterp/octave-value/ov-class.cc Mon Dec 27 19:53:35 2021 -0800 @@ -1802,7 +1802,7 @@ DEFUN (isa, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isa (@var{obj}, @var{classname}) +@deftypefn {} {@var{tf} =} isa (@var{obj}, @var{classname}) Return true if @var{obj} is an object from the class @var{classname}. @var{classname} may also be one of the following class categories: @@ -1928,7 +1928,7 @@ DEFUN (isobject, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isobject (@var{x}) +@deftypefn {} {@var{tf} =} isobject (@var{x}) Return true if @var{x} is a class object. @seealso{class, typeinfo, isa, ismethod, isprop} @end deftypefn */)
--- a/libinterp/octave-value/ov-fcn-handle.cc Mon Dec 27 16:07:08 2021 -0800 +++ b/libinterp/octave-value/ov-fcn-handle.cc Mon Dec 27 19:53:35 2021 -0800 @@ -3593,7 +3593,7 @@ DEFUN (is_function_handle, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} is_function_handle (@var{x}) +@deftypefn {} {@var{tf} =} is_function_handle (@var{x}) Return true if @var{x} is a function handle. @seealso{isa, typeinfo, class, functions} @end deftypefn */)
--- a/libinterp/octave-value/ov-java.cc Mon Dec 27 16:07:08 2021 -0800 +++ b/libinterp/octave-value/ov-java.cc Mon Dec 27 19:53:35 2021 -0800 @@ -3469,7 +3469,7 @@ DEFUN (isjava, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isjava (@var{x}) +@deftypefn {} {@var{tf} =} isjava (@var{x}) Return true if @var{x} is a Java object. @seealso{class, typeinfo, isa, javaObject} @end deftypefn */)
--- a/libinterp/octave-value/ov-null-mat.cc Mon Dec 27 16:07:08 2021 -0800 +++ b/libinterp/octave-value/ov-null-mat.cc Mon Dec 27 19:53:35 2021 -0800 @@ -100,7 +100,7 @@ DEFUN (isnull, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isnull (@var{x}) +@deftypefn {} {@var{tf} =} isnull (@var{x}) Return true if @var{x} is a special null matrix, string, or single quoted string.
--- a/libinterp/octave-value/ov-struct.cc Mon Dec 27 16:07:08 2021 -0800 +++ b/libinterp/octave-value/ov-struct.cc Mon Dec 27 19:53:35 2021 -0800 @@ -1894,7 +1894,7 @@ DEFUN (isstruct, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isstruct (@var{x}) +@deftypefn {} {@var{tf} =} isstruct (@var{x}) Return true if @var{x} is a structure or a structure array. @seealso{ismatrix, iscell, isa} @end deftypefn */) @@ -1934,8 +1934,8 @@ DEFUN (isfield, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isfield (@var{x}, "@var{name}") -@deftypefnx {} {} isfield (@var{x}, @var{name}) +@deftypefn {} {@var{tf} =} isfield (@var{x}, "@var{name}") +@deftypefnx {} {@var{tf} =} isfield (@var{x}, @var{name}) Return true if the @var{x} is a structure and it includes an element named @var{name}.
--- a/libinterp/octave-value/ov-usr-fcn.cc Mon Dec 27 16:07:08 2021 -0800 +++ b/libinterp/octave-value/ov-usr-fcn.cc Mon Dec 27 19:53:35 2021 -0800 @@ -905,7 +905,7 @@ DEFMETHOD (isargout, interp, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isargout (@var{k}) +@deftypefn {} {@var{tf} =} isargout (@var{k}) Within a function, return a logical value indicating whether the argument @var{k} will be assigned to a variable on output.
--- a/libinterp/octave-value/ov.cc Mon Dec 27 16:07:08 2021 -0800 +++ b/libinterp/octave-value/ov.cc Mon Dec 27 19:53:35 2021 -0800 @@ -3625,7 +3625,7 @@ DEFUN (is_sq_string, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} is_sq_string (@var{x}) +@deftypefn {} {@var{tf} =} is_sq_string (@var{x}) Return true if @var{x} is a single-quoted character string. @seealso{is_dq_string, ischar} @end deftypefn */) @@ -3648,7 +3648,7 @@ DEFUN (is_dq_string, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} is_dq_string (@var{x}) +@deftypefn {} {@var{tf} =} is_dq_string (@var{x}) Return true if @var{x} is a double-quoted character string. @seealso{is_sq_string, ischar} @end deftypefn */)
--- a/libinterp/octave.cc Mon Dec 27 16:07:08 2021 -0800 +++ b/libinterp/octave.cc Mon Dec 27 19:53:35 2021 -0800 @@ -429,7 +429,7 @@ DEFUN (isguirunning, args, , doc: /* -*- texinfo -*- -@deftypefn {} {} isguirunning () +@deftypefn {} {@var{tf} =} isguirunning () Return true if Octave is running in GUI mode and false otherwise. @seealso{have_window_system} @end deftypefn */)