| 摘要 |
A coordinate difference calculation apparatus of the present invention is a coordinate difference calculation apparatus for calculating a coordinate difference between an i-particle and a j-particle included in one of a plurality of minute cells obtained by dividing a basic cell, includes a first storage section that stores in advance a coordinate value of the i-particle, a second storage section that stores in advance a value obtained by adding the length of one side of the basic cell to the coordinate of the i-particle, a third storage section that stores a value obtained by subtracting the length of one side of the basic cell from the coordinate of the i-particle, a control section that outputs a selection signal to select a value in order to minimize the distance between a minute cell including the i-particle and a minute cell including the j-particle among the values stored in the first to third storage sections and that outputs a coordinate value of the j-particle, a selection section that selects any one of the values stored in the first to third storage sections and outputs a selected value, and a computing section that subtracts the value output from the selection section from the coordinate of the j-particle output from the control section.
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