Martijn van Oosterhout <kleptog@svana.org> writes:
> On Mon, May 22, 2006 at 10:55:59AM +0400, Victor B. Wagner wrote:
>> I've also unable to find useful description of DirectFunctionCallN
>> family of functions, which seems to be neccessary to call one 'C'
>> language PostgreSQL function from another.
>>
>> It is clear enough from examples in the sources, but...
> Hmm, documentation patches welcome...
The documentation exists: see src/backend/utils/fmgr/README and the
source-code comments in fmgr.c.
Something that's been on the TODO list for a long time is to recast
this and other README files into part of the main SGML docs. There
will never be any substitute for reading the code though ...
regards, tom lane