PostGIS  2.1.10dev-r@@SVN_REVISION@@
Datum geography_eq ( PG_FUNCTION_ARGS  )

Definition at line 202 of file geography_btree.c.

References FALSE, FP_EQUALS, geography_gidx_center(), TRUE, POINT3D::x, POINT3D::y, and POINT3D::z.

203 {
204  /* Put aside some stack memory and use it for GIDX pointers. */
205  char gboxmem1[GIDX_MAX_SIZE];
206  char gboxmem2[GIDX_MAX_SIZE];
207  GIDX *gbox1 = (GIDX*)gboxmem1;
208  GIDX *gbox2 = (GIDX*)gboxmem2;
209  POINT3D p1, p2;
210 
211  /* Must be able to build box for each argument (ie, not empty geometry) */
212  if ( ! gserialized_datum_get_gidx_p(PG_GETARG_DATUM(0), gbox1) ||
213  ! gserialized_datum_get_gidx_p(PG_GETARG_DATUM(1), gbox2) )
214  {
215  PG_RETURN_BOOL(FALSE);
216  }
217 
218  geography_gidx_center(gbox1, &p1);
219  geography_gidx_center(gbox2, &p2);
220 
221  if ( FP_EQUALS(p1.x, p2.x) && FP_EQUALS(p1.y, p2.y) && FP_EQUALS(p1.z, p2.z) )
222  PG_RETURN_BOOL(TRUE);
223 
224  PG_RETURN_BOOL(FALSE);
225 
226 }
double y
Definition: liblwgeom.h:296
double x
Definition: liblwgeom.h:296
double z
Definition: liblwgeom.h:296
static void geography_gidx_center(GIDX *gidx, POINT3D *p)
#define FALSE
Definition: dbfopen.c:169
#define FP_EQUALS(A, B)
#define TRUE
Definition: dbfopen.c:170

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