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CO538 Anonymous Questions and Answers Keyword Index

This page provides a keyword index to questions and answers. Clicking on a keyword will take you to a page containing all questions and answers for that keyword, grouped by year.

To submit a question, use the anonymous questions page. You may find the keyword index and/or top-level index useful for locating past questions and answers.

Keyword reference for abs


Question 14 (2008):

Submission reference: IN1539

Is there an abs() function/process in occam, as for the life of me I can't find it in the library documentation :).

Answer 14:

Oddly enough, no, there is not! Perhaps we should add one just for the sake of completeness? But you can write your own quite easily:

    INT r:
        v < 0
          r := -v
          r := v
      RESULT r

This is an example of an occam-pi function declaration (slides 88..93 of shared-etc). It can be used in the expected way – e.g. "x := abs (i)". Bear in mind that this will cause a run-time error if you were to ask for "abs (MOSTNEG INT)".

Keywords: abs

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Last modified Mon May 20 13:50:24 2013
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