Abstract
The aims of this chapter are:
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To consider some of the reasons for the inclusion of functions in a programming language.
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To introduce, with examples, some of the predefined functions available in Fortran.
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To introduce a classification of intrinsic functions, generic, elemental , transformational.
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To introduce the concept of a user defined function.
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To introduce the concept of a recursive function.
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To introduce the concept of user defined elemental and pure functions.
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To briefly look at scope rules in Fortran for variables and functions.
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To look at internal user defined functions.
I can call spirits from the vasty deep. Why so can I, or so can any man; but will they come when you do call for them?
William Shakespeare, King Henry IV, part 1
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Chivers, I., Sleightholme, J. (2018). Functions. In: Introduction to Programming with Fortran. Springer, Cham. https://doi.org/10.1007/978-3-319-75502-1_12
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DOI: https://doi.org/10.1007/978-3-319-75502-1_12
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