lwgeom_isfinite()

int lwgeom_isfinite

(

const LWGEOM *

lwgeom

)

Check if a LWGEOM has any non-finite (NaN or Inf) coordinates.

Definition at line 2681 of file lwgeom.c.

{
        LWPOINTITERATOR* it = lwpointiterator_create(lwgeom);
        int hasz = lwgeom_has_z(lwgeom);
        int hasm = lwgeom_has_m(lwgeom);
 
        while (lwpointiterator_has_next(it))
        {
                POINT4D p;
                lwpointiterator_next(it, &p);
                int finite = isfinite(p.x) &&
                        isfinite(p.y) &&
                        (hasz ? isfinite(p.z) : 1) &&
                        (hasm ? isfinite(p.m) : 1);
 
                if (!finite)
                {
                        lwpointiterator_destroy(it);
                        return LW_FALSE;
                }
        }
        lwpointiterator_destroy(it);
        return LW_TRUE;
}

References LW_FALSE, LW_TRUE, lwgeom_has_m(), lwgeom_has_z(), lwpointiterator_create(), lwpointiterator_destroy(), lwpointiterator_has_next(), lwpointiterator_next(), POINT4D::m, POINT4D::x, POINT4D::y, and POINT4D::z.

Referenced by buffer(), geography_bestsrid(), LWGEOM_setpoint_linestring(), LWGEOM_to_latlon(), ST_LargestEmptyCircle(), ST_MaximumInscribedCircle(), and topologypreservesimplify().

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