op_enum

Convert operand to a symbolic constant
(for the explanations of 'ea' and 'n' please see @hlpIdcop_bin[op_bin]())
     enumid - id of enumeration type
     serial - serial number of the constant in the enumeration
              The serial numbers are used if there are more than
              one symbolic constant with the same value in the
              enumeration. In this case the first defined constant
              get the serial number 0, then second 1, etc.
              There could be 256 symbolic constants with the same
              value in the enumeration.

success op_enum(long ea, int n, long enumid, long serial);