Builtin math ncr can be extremely slow #8170
Description
The math ncr function is extremely slow when given NAN and 1 as parameters.
This issue is also open on tinyexpr: codeplea/tinyexpr#62
$ time math 'ncr(0/0, 1)'
math: Error: Result is infinite
'ncr(0/0, 1)'
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Executed in 16.87 secs fish external
usr time 16.81 secs 16.81 secs 0.00 micros
sys time 0.06 secs 0.06 secs 0.00 microsThis should be fixable by adding nan checks for the parameters of ncr.
fish, version 3.2.1-1-gb80964b6b