c = power(a,b) : computes the power of iFunc objects
@iFunc/power (.^) function to compute the power of functions
when one of the argument is a character string, it is used as-is in the
operator expression.
input: a: object or array (iFunc or numeric)
b: object or array (iFunc or numeric)
output: c: object or array (iFunc)
ex: c=lorz.^gauss;
Version: Nov. 26, 2018
See also iFunc, iFunc/minus, iFunc/plus, iFunc/times, iFunc/rdivide