The Grinnell Scheme Web: The max procedure

How do I find the greatest of a group of numbers?

Call the max procedure, giving it all of the numbers as operands:

> (max 37 41)
41
> (max -83 -17 -218 -62 -718)
-17
> (max 12)
12
> (max 14 14 14 -3 14 12 14 5 14)
14
That seems straightforward. Do the operands have to be integers?

No, any or all of them can be rationals or reals, if the implementation supports such numbers. The max procedure cannot accept complex numbers as operands, however, since they are not uniquely ordered as ``less'' and ``greater.''

Can the max procedure receive any number of operands?

Any number except zero. It makes no sense to try to find the greatest of an empty collection of numbers.


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This document is available on the World Wide Web as

http://www.math.grin.edu/~stone/scheme-web/max.html


created June 24, 1995
last revised December 29, 1995

Copyright 1995 by John David Stone (stone@math.grin.edu)