Boolean data on TI-89


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Boolean data on TI-89



Working with the TI-83 or TI-86, the result of a comparison is a
_numeric_ boolean value, 0 or 1 for "true" or "false", respectively.
Such results can be calculated with in interesting ways (for example,
one can find the _sum_ of a list of 1's and 0's to count the number of
"successes").

On the TI-89 (and the TI-92, of course), the boolean result returned is
an _actual value_ of "true" or "false".  It is easy enough to convert an
array of numeric booleans tto this form -- for example, if L is a list
of 1's and 0's, one can generate a list of "true" and "false" values by
the command L = (1+newList(dim(L)).

But you can't _calculate_ with such a value (at least as far as I know).
Does anyone know an easy way to turn an array of booleans back into an
array of 0's and 1's?

RWW Taylor
National Technical Institute for the Deaf
Rochester Institute of Technology
Rochester NY 14623

>>>> The plural of mongoose begins with p. <<<<


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