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(parent: af03663) | patch

Attached is a patch implementing factorial(), returning numeric. Points

Attached is a patch implementing factorial(), returning numeric. Points
to note:

1) arttype is numeric. I thought this was the best way of allowing
arbitarily large factorials, even though factorial(2^63) is a large
number. Happy to change to integers if this is overkill.
2) since we're accepting numeric arguments, the patch tests for floats.
If a numeric is passed with non-zero decimal portion, an error is raised
since (from memory) they are undefined.

Gavin Sherry

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