On 2020-06-18 09:43, Juan José Santamaría Flecha wrote:
On Thu, Jun 18, 2020 at 9:13 AM Peter Eisentraut <peter.eisentr...@2ndquadrant.com <mailto:peter.eisentr...@2ndquadrant.com>> wrote:On 2020-06-16 14:17, Dean Rasheed wrote: > I think you're probably right though. Raising an out-of-range error > seems like the best option. committed as proposed thenThe gamma function from math.h returns a NaN for negative integer values, the postgres factorial function returns a numeric, which allows NaN. Raising an out-of-range error seems only reasonable for an integer output.
But this is not the gamma function. The gamma function is undefined at zero, but factorial(0) returns 1. So this is similar but not the same.
Moreover, functions such as log() also error out on unsupportable input values, so it's consistent with the spec.
-- Peter Eisentraut http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
