On Fri, 8 Jun 2018 at 13:27, Geoff Winkless <pgsqladmin(at)geoff(dot)dj> wrote:
> numeric_in looks like it might do what I want but to do that I would
> have to build a FunctionCallInfo struct to do that, and I'm not 100%
> clear how to do that either :(
Answering my own question, looks like
res = DatumGetNumeric(DirectFunctionCall3(numeric_in,
CStringGetDatum(buf), 0, -1));
should do it, judging from
https://api.pgxn.org/src/orafce/orafce-3.6.1/convert.c
Geoff