view examples/code/funcdemo.cc @ 20800:7c0e10f035bd

Extend parser to accept binary constants that begin with '0b' or '0B'. * NEWS: Announce change: * lex.ll: Define NUMBIN to be 0[bB] followed by 0,1, or '_'. Define NUMBER to be NUMREAL|NUMHEX|NUMBIN. *lex.ll (looks_like_bin): New function to detect 0[bB] prefix. *lex.ll (handle_numbe): Call looks_like_bin() and if found then convert binary string to double. * parser.tst: Add tests for new behavior.
author Rik <rik@octave.org>
date Fri, 09 Oct 2015 18:52:58 -0700
parents 2f8500ca91d3
children
line wrap: on
line source

#include <octave/oct.h>
#include <octave/parse.h>

DEFUN_DLD (funcdemo, args, nargout, "Function Demo")
{
  octave_value_list retval;

  int nargin = args.length ();

  if (nargin < 2)
    print_usage ();

  octave_value_list newargs;

  for (octave_idx_type i = nargin - 1; i > 0; i--)
    newargs(i-1) = args(i);

  if (args(0).is_function_handle () || args(0).is_inline_function ())
    {
      octave_function *fcn = args(0).function_value ();

      retval = feval (fcn, newargs, nargout);
    }
  else if (args(0).is_string ())
    {
      std::string fcn = args(0).string_value ();

      retval = feval (fcn, newargs, nargout);
    }
  else
    error ("funcdemo: INPUT must be string, inline, or function handle");

  return retval;
}