Horton

gamma() and lgamma() functions

Dean Rasheed <dean.a.rasheed@gmail.com>

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From: Dean Rasheed <dean.a.rasheed@gmail.com>
To: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2024-07-01T10:33:35Z
Lists: pgsql-hackers

Commits

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  1. Add support for gamma() and lgamma() functions.

Attachments

Attached is a patch adding support for the gamma and log-gamma
functions. See, for example:

https://en.wikipedia.org/wiki/Gamma_function

I think these are very useful general-purpose mathematical functions.
They're part of C99, and they're commonly included in other
mathematical libraries, such as the python math module, so I think
it's useful to make them available from SQL.

The error-handling for these functions seems to be a little trickier
than most, so that might need further discussion.

Regards,
Dean