Arithmatic Error
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operands are initialized with
Arithmetic Error Converting Numeric To Data Type Numeric
the initialization arguments named :operation and :operands to make-condition, and are accessed by the functions arithmetic-error-operation and arithmetic-error-operands. See Also: arithmetic-error-operation, arithmetic-error-operands Copyright 1996-2005, LispWorks Ltd. All rights reserved.
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Arithmetic Error Propagation
professionals in related fields. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top How http://clhs.lisp.se/Body/e_arithm.htm to avoid arithmetic mistakes? up vote 29 down vote favorite 15 When dealing with several numbers and long equations, it's common to make careless arithmetic mistakes that give the wrong answer. I was wondering if anyone had tips to catch these mistakes, or even better avoid them more often. (aside from the obvious checking your work- that's a must) arithmetic share|cite|improve this question asked Apr 29 '12 at 7:08 user26649 4 More practice http://math.stackexchange.com/questions/138341/how-to-avoid-arithmetic-mistakes and calm state of mind. –Tomarinator Apr 29 '12 at 7:11 1 Start with positive thinking: it's not common to make careless arithmetic mistakes that give the wrong answer. It works. :) –sai Apr 29 '12 at 7:21 2 Also, apparently 'don't do arithmetic before you've had your morning coffee'... –Steven Stadnicki Apr 29 '12 at 17:09 4 Just another tiny tip: if the things you're performing arithmetic on have units, keep the units on, and make sure the units of the result you get do make sense. So, you can't add feet and meters directly, and if you're expecting a result in mass units and you get something in square meters per kilogram, something went quite wrong. –J. M. Apr 29 '12 at 17:37 4 Neatness helps a lot. Write clearly. Keep things in columns. Don't try to cram too much onto the page. Don't try to do too much in your head (i.e. write out each step). As you use terms to get to the next line, check them off or underline them. –Tpofofn Apr 29 '12 at 22:24 | show 4 more comments 13 Answers 13 active oldest votes up vote 26 down vote accepted There are certain quick methods called sanity checks which will catch most (but not all) arithmetic errors.
operands are initialized with the arithmetic error converting initialization arguments named :operation and :operands to make-condition, and are accessed by the functions arithmetic-error-operation and arithmetic-error-operands. See Also: arithmetic-error-operation, arithmetic-error-operands Copyright 1996, The Harlequin Group Limited. All Rights Reserved.