In designing a general purpose subroutine package to solve a class of problems, one often has to write subroutines with a large number of arguments. Though these arguments are required to cover a range of possibilities, many of these arguments have some commonly occurring values. The user is usually burdened with supplying a long list of arguments and making sure that the number and types match. Alternate solution is to write such subroutines in the assembly language so that they could have variable number of arguments. This approach eliminates a large class of program designers who do not and do not want to know the assembler language. This paper describes a facility which enables these program designers to write their routines completely in a higher level language (FORTRAN) and yet enjoy the "luxury" of having variable number of arguments in the calling sequence.
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