PostGIS  3.1.6dev-r@@SVN_REVISION@@

◆ lwgeom_isfinite()

int lwgeom_isfinite ( const LWGEOM lwgeom)

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

Definition at line 2540 of file lwgeom.c.

2541 {
2543  int hasz = lwgeom_has_z(lwgeom);
2544  int hasm = lwgeom_has_m(lwgeom);
2545 
2546  while (lwpointiterator_has_next(it))
2547  {
2548  POINT4D p;
2549  lwpointiterator_next(it, &p);
2550  int finite = isfinite(p.x) &&
2551  isfinite(p.y) &&
2552  (hasz ? isfinite(p.z) : 1) &&
2553  (hasm ? isfinite(p.m) : 1);
2554 
2555  if (!finite)
2556  {
2558  return LW_FALSE;
2559  }
2560  }
2562  return LW_TRUE;
2563 }
#define LW_FALSE
Definition: liblwgeom.h:108
LWPOINTITERATOR * lwpointiterator_create(const LWGEOM *g)
Create a new LWPOINTITERATOR over supplied LWGEOM*.
Definition: lwiterator.c:242
int lwpointiterator_next(LWPOINTITERATOR *s, POINT4D *p)
Attempts to assign the next point in the iterator to p, and advances the iterator to the next point.
Definition: lwiterator.c:210
void lwpointiterator_destroy(LWPOINTITERATOR *s)
Free all memory associated with the iterator.
Definition: lwiterator.c:267
int lwpointiterator_has_next(LWPOINTITERATOR *s)
Returns LW_TRUE if there is another point available in the iterator.
Definition: lwiterator.c:202
#define LW_TRUE
Return types for functions with status returns.
Definition: liblwgeom.h:107
int lwgeom_has_z(const LWGEOM *geom)
Return LW_TRUE if geometry has Z ordinates.
Definition: lwgeom.c:917
int lwgeom_has_m(const LWGEOM *geom)
Return LW_TRUE if geometry has M ordinates.
Definition: lwgeom.c:924
double x
Definition: liblwgeom.h:428
double z
Definition: liblwgeom.h:428
double y
Definition: liblwgeom.h:428

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_to_latlon(), ST_MaximumInscribedCircle(), ST_Split(), and topologypreservesimplify().

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