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Zero to the zero power: Difference between revisions

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Zero to the zero power (view source)

Revision as of 04:18, 18 November 2022

393 bytes removed ,  1 year ago
→‎{{header|jq}}: jq, gojq, fq
(Fix Wikipedia links: Zero to the Power of Zero has a dedicated page now.)
(→‎{{header|jq}}: jq, gojq, fq)
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=={{header|jq}}==
{{works with|jq|1.5}}
jq version 1.4 does not have a builtin "power" function. If it were to be defined
'''Also works with gojq and fq'''
using the exp and log builtins as 'log * y | exp', then 0 | power(0) would yield null, and therefore
<pre>
a definition that makes a special case of 0^0 should be considered, e.g.
$ jq -n 'pow(0;0)'
along the following lines:
1
<syntaxhighlight lang="jq">def power(y): y as $y | if $y == 0 then 1 elif . == 0 then 0 else log * $y | exp end;</syntaxhighlight>
</pre>
 
It is also worth noting that in jq, gojq, and fq, `pow(0; infinite)` yields 0.
This definition will however be unsatisfactory for many purposes
because it does not maintain precision for integer values of the input (.) and y.
 
=={{header|Jsish}}==
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