Since the computer machine time increases roughly as the square of the number of degrees of freedom, it was decided to re-code the programs described in References 2 and 3, for the IBM 7090 computer, instead of for the IBM 704. Due to the size of the system, it was necessary to sub-divide the program into 4 CHAIN LINKS, to accommodate the storage requirements. During the course of field testing, it was found that single-precision arithmetic was inadequate in one section, and. therefore it was necessary to utilize triple-precision arithmetic.
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