A method of configuring an integrated circuit device to perform a function includes storing a plurality of configurations for performing the function, each of the configurations being designed for a different characteristic of a particular input to the function. Inputs are received for the function, including the particular input. The characteristic of the particular input as received is examined, and one of the plurality of configurations is instantiated based on that characteristic of the particular input as received. A machine-readable data storage medium may be encoded with instructions to perform the method. A programmable device may be configured according to the method, and also may be incorporated into a heterogeneous system.