Abstract
The Bell Laboratories Mathematical Subroutine Library, PORT, has been under development at Bell Laboratories for the past few years. The design of PORT stemmed from the basic principles of portability and ease of use. The attributes and mechanisms used in the library to support this philosophy include the use of a portable subset of Fortran, and the use of (machine-dependent) functions to supply the necessary environment parameters. Abbreviated calling sequences are made possible by a simplified error-handling technique, and by the use of a portable stack allocator for temporary workspace. Our experience to date with these approaches, and our plans for the future are reviewed here.
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