get_result_srid()

static int32_t get_result_srid ( size_t  count, const char *  funcname,   ...  )

static

Definition at line 627 of file liblwgeom/lwgeom_geos.c.

{
        va_list ap;
        va_start(ap, funcname);
        int32_t srid = SRID_INVALID;
        size_t i;
        for(i = 0; i < count; i++)
        {
                LWGEOM* g = va_arg(ap, LWGEOM*);
                if (!g)
                {
                        lwerror("%s: Geometry is null", funcname);
                        va_end(ap);
                        return SRID_INVALID;
                }
                if (i == 0)
                {
                        srid = g->srid;
                }
                else
                {
                        if (g->srid != srid)
                        {
                                lwerror("%s: Operation on mixed SRID geometries (%d != %d)", funcname, srid, g->srid);
                                va_end(ap);
                                return SRID_INVALID;
                        }
                }
        }
        va_end(ap);
        return srid;
}

References lwerror(), LWGEOM::srid, and SRID_INVALID.

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