Abstract
AbstractThis paper describes software engineering aspects and the scope of three subroutine libraries developed at the U.K. National Physical Laboratory (NPL). The libraries are concerned with three important fields of mathematical computation: data approximation, linear algebra and optimization. A portable subset of Fortran was used in the construction of these libraries, which have a highly modular structure and are supported by full user documentation.Reference is made to Microtext, an NPL software product for displaying structured information. Its value in respect of the subroutine libraries lies in its ability to assist the user in selecting appropriate subroutines for the solution of his problem.
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