# File diffeq.rb, line 575
def compute_order(log10norm, log10abserr, log10relerr)
#*
# * this is to determine the 'optimal' degree of the taylor expansion.
# *
# * parameters:
# * log10norm: base 10 log of the norm of the initial condition
# * log10abserr: base-10 log of the absolute error required
# * log10relerr: base-10 log of the relative error required
# *
# * returned value: 'optimal' degree.
#*/
# When I studied it I couldn't really understand Angel Jorba && Maorong Zou 's
# method for determining the order.  I don't adjust it anymore.
# It will be set to the problem file max_terms which defaults to 30 which seems
# a good value most of the time.
# I've retained $max_taylor in case I find a better way.
return($max_taylor)
end