Abstract: A method is disclosed for deriving code schedule sequences for a target code generator from an input ordering of nodes and prime factors of their respective ordered invocation rates from an SDF graph representative of a system. The method involves first creating a loop set for each prime factor wherein the elements of each loop set are the actors, the invocation frequency from which are factorable by that prime factor and are ordered. The redundant created loop sets are merged so as to eliminate those sets with identical nodes. The merged loop sets are then sorted in decreasing order by the total number of node elements in each set. A determination is then made as to whether each loop set is a proper subset of its sorted ordered predecessor loop set with which it intersects and, if not, then breaking the non-disjoint sets into sublists of sets which are proper subsets of their predecessor sets and then determining whether the parent sets of the broken sublists are then disjoint from one another.

Abstract: Method for ordering computer software procedures in an order using a computing machine for modeling each of multiple blocks of a block diagram. The block diagram is capable of having at least one feedback loop. Each block corresponds to a software procedure for performing at least one function and has at least one input or at least one output. The block diagram has interconnections between such inputs and outputs of such blocks forming a block diagram. A list of inputs for each of such blocks is generated; a list of outputs for each of such blocks is generated; a feed-through list for each of at least some of such outputs of such blocks is generated. Each feed-through list has a list of any input which directly affects the output of the same block. The input, output and feed-through lists are machine processed for ordering of such procedures in the order during modeling.

Abstract: An apparatus and/or method using an automatic program generation computer for generation of a computer program which represents a functional system on a display. A system has a plurality of interactively connected functionality blocks which form a block diagram and typically, the block diagram has one or more feedback loops. Each of the blocks has at least one input, at least some of the blocks have at least one input functionally defined by and connected to at least one of the outputs. At least one of the blocks is a state block whose operation at one time is dependent on the condition of at least one input for the state block at a prior time. A stored update state procedure is provided corresponding to the state block defining the state as a function of at least one of the inputs to the state block. At least one stored update output procedure is provided and corresponds to each of the blocks for defining at least one of the outputs of a block.