perlquestion
swampyankee
<p>In another forum (one that's science, not software, oriented), there was a poster asking for programming advice. He's trying to port some code to a PLC, the development environment of which can't do exponentiation.</p>
<p>Alas, he needs to do non-integer exponents. So, my question for the Mathematical Monks is does anybody know of an exponentiation function? Because of the way exponens work, the only concern is fractional powers, <em>i.e.</em> those with absolute values less than one. I'm digging through my copy of Knuth and <em>Numerical Recipes</em>, but since real languages can do $x = $y ** $z; with some restrictions, I've never looked into that deeply into the numerical libraries.</p>
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Information about American English usage [http://wsu.edu/~brians/errors/index.html|here] and [http://andromeda.rutgers.edu/~jlynch/Writing/|here]. Floating point issues? Please read [http://docs.sun.com/source/806-3568/ncg_goldberg.html| this ] before posting. — emc</p>
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