Message-ID: <47B556E6.8090200@archonet.com>
Date: Fri, 15 Feb 2008 09:09:58 +0000
From: Richard Huxton <dev@archonet.com>
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To: Bart Degryse <Bart.Degryse@indicator.be>
CC: pgsql-sql@postgresql.org
Subject: Re: Function description
References: <47B56063.A3DD.0030.0@indicator.be>
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Bart Degryse wrote:
> Hi all,
> I find some 1553 functions in pg_catalog of which only a small part is documented in the manual.
> Does anyone know where I can find what the others do with maybe an example.

There's no other documentation (apart from the source) but most are 
repetitions and conversions:

For example "\df int4" returns 8 identically named casts to cover 
converting from numeric, real, smallint etc. There is a similar list for 
int2 and most other types in the system.

Likewise "\df int*mod" will show a set of modulo-calculation functions 
for various sizes of integer.

So - they're not explicitly documented as separate functions, but they 
implement operators and public functions that are.

-- 
   Richard Huxton
   Archonet Ltd