Reference manual of the FORTRAN utility library TTUTIL with applications
Cornelis Rappoldt, D.W.G. van Kraalingen · Socio-Environmental Systems Modeling · 1990
There are some ever recurring problems associated with the use of FORTRAN programs.Reading data from files is often done using specific formats.That tends to make programs and data files difficult to adapt and to maintain.Furthermore, there are always problems programming output in a convenient form.Over the last years we developed solutions for our own problems with respect to input, output, character strings and file handling.Each time we paid a little more attention than strictly necessary for the problem at hand.That has resulted in a slowly growing set of subroutines and functions that proved to be useful in almost any program.Most of these routines have gone through a number of revisions.We now use identical sources on VAX, IBM PC and Apple Macintosh.The set of 57 routines became our utility library TTUTIL.In addition to "pure utilities" the library also contains a number of routines that resulted from our work with simulation models.The source code of all routines is free.We hope that others will find the library a useful!foolin improvingtheHrprograms:This report contains all comment headers and parameter lists and may serve as a reference manual in using the library.The introductory chapters contain some background explanation and examples.In a separate chapter we made remarks on the use of FORTRAN in simulations models.