view examples/unwinddemo.cc @ 19010:3fb030666878 draft default tip dspies

Added special-case logical-indexing function * logical-index.h (New file) : Logical-indexing function. May be called on octave_value types via call_bool_index * nz-iterators.h : Add base-class nz_iterator for iterator types. Array has template bool for whether to internally store row-col or compute on the fly Add skip_ahead method which skips forward to the next nonzero after its argument Add flat_index for computing octave_idx_type index of current position (with assertion failure in the case of overflow) Move is_zero to separate file * ov-base-diag.cc, ov-base-mat.cc, ov-base-sparse.cc, ov-perm.cc (do_index_op): Add call to call_bool_index in logical-index.h * Array.h : Move forward-declaration for array_iterator to separate header file * dim-vector.cc (dim_max): Refers to idx-bounds.h (max_idx) * array-iter-decl.h (New file): Header file for forward declaration of array-iterator * direction.h : Add constants fdirc and bdirc to avoid having to reconstruct them * dv-utils.h, dv-utils.cc (New files) : Utility functions for querying and constructing dim-vectors * idx-bounds.h (New file) : Utility constants and functions for determining whether things will overflow the maximum allowed bounds * interp-idx.h (New function : to_flat_idx) : Converts row-col pair to linear index of octave_idx_type * is-zero.h (New file) : Function for determining whether an element is zero * logical-index.tst : Add tests for correct return-value dimensions and large sparse matrix behavior
author David Spies <dnspies@gmail.com>
date Fri, 25 Jul 2014 13:39:31 -0600
parents be41c30bcb44
children
line wrap: on
line source

#include <octave/oct.h>
#include <octave/unwind-prot.h>

void
my_err_handler (const char *fmt, ...)
{
  // Do nothing!!
}

DEFUN_DLD (unwinddemo, args, nargout, "Unwind Demo")
{
  octave_value retval;
  int nargin = args.length ();

  if (nargin < 2)
    print_usage ();
  else
    {
      NDArray a = args(0).array_value ();
      NDArray b = args(1).array_value ();

      if (! error_state)
        {
          // Declare unwind_protect frame which lasts as long as
          // the variable frame has scope.
          unwind_protect frame;
          frame.protect_var (current_liboctave_warning_handler);

          set_liboctave_warning_handler (my_err_handler);
          retval = octave_value (quotient (a, b));
        }
    }
  return retval;
}