[postgis-devel] lwgeom_getsrid()

[Bryce L Nordgren]

/*
 * get the SRID from the LWGEOM
 * none present => -1
 */
extern int lwgeom_getsrid(uchar *serialized);

I'm getting a little turned around with all the different forms I can find
geometries in. What is (uchar *) and how does it relate to PG_LWGEOM, LWGEOM
and friends? Specifically, if I have a (LWGEOM *), how do I get a (uchar *)?
This seems to be the only "accessor" method which doesn't take (LWGEOM *).

Bryce
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