COMPILE PROCESSING SYSTEM

PURPOSE:To expand the instruction of an accuracy reduction function to vector data in an object program by providing a generating part for displaying the vector data of the accuracy reduction object, a first instruction generating part, and a second instruction generating part for expanding the instruction. CONSTITUTION:When a syntax analyzing part 12 detects the appearance of vector data of an accuracy reduction object, a generation part 21 generates the exclusive intermediate language for the accuracy reduction in accordance with this detection. Also, an optimizing part 13 executes an optimization processing, while grasping the vector data of the accuracy reduction object by being aware of this generated exclusive intermediate language for the accuracy reduction, and sets a train of the intermediate language generated by the syntax analyzing part 12 to an optimal one. Subsequently, whenever the intermediate language generated by the generating part 14 is received, a code generating part 14 calls a first and a second instruction generating parts 22, 23. In such a way, an instruction of the accuracy reduction function related to the vector data can be expanded in an object program 3.