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Re: Could 0^0=0? Maybe!
Posted:
Sep 26, 2013 5:10 AM
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In article <b63a9e66-57b3-45f7-a1b6-5adcd9700978@googlegroups.com>,
Dan Christensen <Dan_Christensen@sympatico.ca> wrote:
>Many designers of programming languages assume that 0^0=1.
Do you have any evidence that they "assume" this, rather than
investigating it and making a reasoned decision?
Designers of current programming languages may follow IEEE 754, which
defines three power functions. pown(x,y) is defined for integral exponents
only, and has pown(0,0) = 1, which avoids many special cases. powr(x,y)
is defined as exp(y log(x)) so naturally has powr(0,0) raise an
exception. The generic pow(x,y) has pow(0,0) = 1.
-- Richard
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