unless necessary for formatting or code, use ' instead of ` Files affected: doc/interpreter/TODO, etc/HACKING.md, examples/code/oregonator.cc, examples/code/oregonator.m, libgui/graphics/ObjectFactory.cc, libinterp/corefcn/defun-dld.h, libinterp/corefcn/defun.h, libinterp/corefcn/graphics.cc, libinterp/corefcn/ls-hdf5.cc, libinterp/corefcn/oct-stream.cc, libinterp/octave-value/cdef-class.cc, libinterp/octave-value/cdef-manager.cc, libinterp/octave-value/cdef-method.cc, libinterp/octave-value/cdef-object.cc, libinterp/octave-value/cdef-package.cc, libinterp/octave-value/cdef-property.cc, libinterp/octave-value/cdef-utils.cc, libinterp/octave-value/ov-classdef.cc, libinterp/octave-value/ov-java.cc, libinterp/octave-value/ov.h, libinterp/parse-tree/oct-parse.yy, liboctave/array/Array.h, liboctave/numeric/bsxfun.h, liboctave/util/oct-rl-hist.c, scripts/help/__unimplemented__.m, scripts/image/imformats.m, scripts/image/imwrite.m, scripts/image/private/__imread__.m, scripts/image/private/__imwrite__.m, scripts/java/org/octave/Matrix.java, scripts/linear-algebra/condeig.m, scripts/miscellaneous/inputParser.m, scripts/miscellaneous/publish.m, scripts/pkg/private/configure_make.m, scripts/special-matrix/gallery.m, scripts/web/weboptions.m, test/classdef/classdef.tst.

#include <octave/oct.h>

DEFUN_DLD (oregonator, args, ,
           "The 'oregonator'.\n\
\n\
Reference:\n\
\n\
  Oscillations in chemical systems.  IV.  Limit cycle behavior in a\n\
  model of a real chemical reaction. Richard J. Field and Richard\n\
  M. Noyes, The Journal of Chemical Physics, Volume 60 Number 5,\n\
  March 1974.")
{
  ColumnVector dx (3);

  ColumnVector x (args(0).vector_value ());

  dx(0) = 77.27 * (x(1) - x(0)*x(1) + x(0) - 8.375e-06*pow (x(0), 2.0));
  dx(1) = (x(2) - x(0)*x(1) - x(1)) / 77.27;
  dx(2) = 0.161*(x(0) - x(2));

  return octave_value (dx);
}