Patent ID: 7904866

Claim:
A computer readable recording medium with a wiring design program stored thereon, the program causing the computer to execute processes comprising: an extracting process, extracting an apex from a designed wiring layout, and, from layout data representing the layout, extracting data representing the outline of a portion including the extracted apex and extracting data for two lines originating from the apex using the computer; a deriving process, adding a curved line to the apex-containing portion, and deriving region data representing a region surrounded by the curved line and the two lines, based on data representing the added curved line and the data for the two lines; a determining process, determining the angle formed by the two lines, on the side corresponding to the outside of the wiring line, based on the data of the two lines; and a changing process, changing the layout data based on the region data such that a portion corresponding to the region is added to the apex-containing portion of the layout when the determined angle is less than 180 degrees, and changing the layout data based on the region data such that a portion corresponding to the region is removed from the apex-containing portion of the layout when the determined angle exceeds 180 degrees.