Mercurial > octave-nkf
annotate examples/globaldemo.cc @ 11542:695141f1c05c ss-3-3-55
snapshot 3.3.55
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Sat, 15 Jan 2011 04:53:04 -0500 |
| parents | 4295d634797d |
| children | be41c30bcb44 |
| rev | line source |
|---|---|
| 6572 | 1 #include <octave/oct.h> |
| 2 | |
| 3 DEFUN_DLD (globaldemo, args, , "Global demo.") | |
| 4 { | |
| 5 int nargin = args.length (); | |
| 6 octave_value retval; | |
| 7 | |
| 8 if (nargin != 1) | |
| 9 print_usage (); | |
| 10 else | |
| 11 { | |
| 12 std::string s = args(0).string_value (); | |
| 13 if (! error_state) | |
| 14 { | |
| 15 octave_value tmp = get_global_value (s, true); | |
| 16 if (tmp.is_defined ()) | |
| 17 retval = tmp; | |
| 18 else | |
| 19 retval = "Global variable not found"; | |
| 20 | |
| 21 set_global_value ("a", 42.0); | |
| 22 } | |
| 23 } | |
| 24 return retval; | |
| 25 } |