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Decimal Exponent

Decimal Exponent

Decimal Exponent

I need to know how I should go about calculating a decimal exponent. Any help would be appreciated.
For example  3.5 ^ 7.1

RE: Decimal Exponent

You'll be using the math coprocessor (which, in this day and age, is no longer a coprocessor).

Load the numbers into the math coprocessor, and perform the operation.

Unfortunately, the math coprocessor does NOT support an X^Y operation.  So what do you do?  Well, we CAN use logarithms and their weird properties.  Now:

2 log x

happens to be equal to

log x^2


y log2 (x)

happens tp be equal to

log2 (x^y)

and as it happens, the processor supports both log base 2 and anti-log base 2 operations.

Implementation is up to you, for the simple reason that while I know how it's done, I've never actually implemented it.  Experiment.  Back up your hard disk.  Good luck.

"Information has a tendency to be free.  Which means someone will always tell you something you don't want to know."

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