LCOV - differential code coverage report
Current view: top level - src/include/utils - geo_decls.h (source / functions) Coverage Total Hit GNC CBC ECB DCB
Current: Differential Code Coverage HEAD vs 15 Lines: 100.0 % 42 42 30 12 25 5
Current Date: 2023-04-08 15:15:32 Functions: 100.0 % 21 21 15 6 12 3
Baseline: 15
Baseline Date: 2023-04-08 15:09:40
Legend: Lines: hit not hit

           TLA  Line data    Source code
       1                 : /*-------------------------------------------------------------------------
       2                 :  *
       3                 :  * geo_decls.h - Declarations for various 2D constructs.
       4                 :  *
       5                 :  *
       6                 :  * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
       7                 :  * Portions Copyright (c) 1994, Regents of the University of California
       8                 :  *
       9                 :  * src/include/utils/geo_decls.h
      10                 :  *
      11                 :  *    XXX These routines were not written by a numerical analyst.
      12                 :  *
      13                 :  *    XXX I have made some attempt to flesh out the operators
      14                 :  *      and data types. There are still some more to do. - tgl 97/04/19
      15                 :  *
      16                 :  *-------------------------------------------------------------------------
      17                 :  */
      18                 : #ifndef GEO_DECLS_H
      19                 : #define GEO_DECLS_H
      20                 : 
      21                 : #include <math.h>
      22                 : 
      23                 : #include "fmgr.h"
      24                 : 
      25                 : /*--------------------------------------------------------------------
      26                 :  * Useful floating point utilities and constants.
      27                 :  *--------------------------------------------------------------------
      28                 :  *
      29                 :  * "Fuzzy" floating-point comparisons: values within EPSILON of each other
      30                 :  * are considered equal.  Beware of normal reasoning about the behavior of
      31                 :  * these comparisons, since for example FPeq does not behave transitively.
      32                 :  *
      33                 :  * Note that these functions are not NaN-aware and will give FALSE for
      34                 :  * any case involving NaN inputs.
      35                 :  *
      36                 :  * Also note that these will give sane answers for infinite inputs,
      37                 :  * where it's important to avoid computing Inf minus Inf; we do so
      38                 :  * by eliminating equality cases before subtracting.
      39                 :  */
      40                 : 
      41                 : #define EPSILON                 1.0E-06
      42                 : 
      43                 : #ifdef EPSILON
      44                 : #define FPzero(A)               (fabs(A) <= EPSILON)
      45                 : 
      46                 : static inline bool
      47 CBC     9167586 : FPeq(double A, double B)
      48                 : {
      49         9167586 :     return A == B || fabs(A - B) <= EPSILON;
      50                 : }
      51                 : 
      52                 : static inline bool
      53             192 : FPne(double A, double B)
      54                 : {
      55             192 :     return A != B && fabs(A - B) > EPSILON;
      56                 : }
      57                 : 
      58                 : static inline bool
      59         1478489 : FPlt(double A, double B)
      60                 : {
      61         1478489 :     return A + EPSILON < B;
      62                 : }
      63                 : 
      64                 : static inline bool
      65         1591095 : FPle(double A, double B)
      66                 : {
      67         1591095 :     return A <= B + EPSILON;
      68                 : }
      69                 : 
      70                 : static inline bool
      71        18113049 : FPgt(double A, double B)
      72                 : {
      73        18113049 :     return A > B + EPSILON;
      74                 : }
      75                 : 
      76                 : static inline bool
      77          558258 : FPge(double A, double B)
      78                 : {
      79          558258 :     return A + EPSILON >= B;
      80                 : }
      81                 : #else
      82                 : #define FPzero(A)               ((A) == 0)
      83                 : #define FPeq(A,B)               ((A) == (B))
      84                 : #define FPne(A,B)               ((A) != (B))
      85                 : #define FPlt(A,B)               ((A) < (B))
      86                 : #define FPle(A,B)               ((A) <= (B))
      87                 : #define FPgt(A,B)               ((A) > (B))
      88                 : #define FPge(A,B)               ((A) >= (B))
      89                 : #endif
      90                 : 
      91                 : #define HYPOT(A, B)             pg_hypot(A, B)
      92                 : 
      93                 : /*---------------------------------------------------------------------
      94                 :  * Point - (x,y)
      95                 :  *-------------------------------------------------------------------*/
      96                 : typedef struct
      97                 : {
      98                 :     float8      x,
      99                 :                 y;
     100                 : } Point;
     101                 : 
     102                 : 
     103                 : /*---------------------------------------------------------------------
     104                 :  * LSEG - A straight line, specified by endpoints.
     105                 :  *-------------------------------------------------------------------*/
     106                 : typedef struct
     107                 : {
     108                 :     Point       p[2];
     109                 : } LSEG;
     110                 : 
     111                 : 
     112                 : /*---------------------------------------------------------------------
     113                 :  * PATH - Specified by vertex points.
     114                 :  *-------------------------------------------------------------------*/
     115                 : typedef struct
     116                 : {
     117                 :     int32       vl_len_;        /* varlena header (do not touch directly!) */
     118                 :     int32       npts;
     119                 :     int32       closed;         /* is this a closed polygon? */
     120                 :     int32       dummy;          /* padding to make it double align */
     121                 :     Point       p[FLEXIBLE_ARRAY_MEMBER];
     122                 : } PATH;
     123                 : 
     124                 : 
     125                 : /*---------------------------------------------------------------------
     126                 :  * LINE - Specified by its general equation (Ax+By+C=0).
     127                 :  *-------------------------------------------------------------------*/
     128                 : typedef struct
     129                 : {
     130                 :     float8      A,
     131                 :                 B,
     132                 :                 C;
     133                 : } LINE;
     134                 : 
     135                 : 
     136                 : /*---------------------------------------------------------------------
     137                 :  * BOX  - Specified by two corner points, which are
     138                 :  *       sorted to save calculation time later.
     139                 :  *-------------------------------------------------------------------*/
     140                 : typedef struct
     141                 : {
     142                 :     Point       high,
     143                 :                 low;            /* corner POINTs */
     144                 : } BOX;
     145                 : 
     146                 : /*---------------------------------------------------------------------
     147                 :  * POLYGON - Specified by an array of doubles defining the points,
     148                 :  *      keeping the number of points and the bounding box for
     149                 :  *      speed purposes.
     150                 :  *-------------------------------------------------------------------*/
     151                 : typedef struct
     152                 : {
     153                 :     int32       vl_len_;        /* varlena header (do not touch directly!) */
     154                 :     int32       npts;
     155                 :     BOX         boundbox;
     156                 :     Point       p[FLEXIBLE_ARRAY_MEMBER];
     157                 : } POLYGON;
     158                 : 
     159                 : /*---------------------------------------------------------------------
     160                 :  * CIRCLE - Specified by a center point and radius.
     161                 :  *-------------------------------------------------------------------*/
     162                 : typedef struct
     163                 : {
     164                 :     Point       center;
     165                 :     float8      radius;
     166                 : } CIRCLE;
     167                 : 
     168                 : /*
     169                 :  * fmgr interface functions
     170                 :  *
     171                 :  * Path and Polygon are toastable varlena types, the others are just
     172                 :  * fixed-size pass-by-reference types.
     173                 :  */
     174                 : 
     175                 : static inline Point *
     176 GNC    57298500 : DatumGetPointP(Datum X)
     177                 : {
     178        57298500 :     return (Point *) DatumGetPointer(X);
     179                 : }
     180                 : static inline Datum
     181        46295060 : PointPGetDatum(const Point *X)
     182                 : {
     183        46295060 :     return PointerGetDatum(X);
     184                 : }
     185                 : #define PG_GETARG_POINT_P(n) DatumGetPointP(PG_GETARG_DATUM(n))
     186 ECB             : #define PG_RETURN_POINT_P(x) return PointPGetDatum(x)
     187                 : 
     188                 : static inline LSEG *
     189 GNC       41501 : DatumGetLsegP(Datum X)
     190                 : {
     191           41501 :     return (LSEG *) DatumGetPointer(X);
     192                 : }
     193                 : static inline Datum
     194           30785 : LsegPGetDatum(const LSEG *X)
     195                 : {
     196           30785 :     return PointerGetDatum(X);
     197                 : }
     198                 : #define PG_GETARG_LSEG_P(n) DatumGetLsegP(PG_GETARG_DATUM(n))
     199 ECB             : #define PG_RETURN_LSEG_P(x) return LsegPGetDatum(x)
     200                 : 
     201                 : static inline PATH *
     202 GNC     1423517 : DatumGetPathP(Datum X)
     203                 : {
     204         1423517 :     return (PATH *) PG_DETOAST_DATUM(X);
     205                 : }
     206                 : static inline PATH *
     207             933 : DatumGetPathPCopy(Datum X)
     208                 : {
     209             933 :     return (PATH *) PG_DETOAST_DATUM_COPY(X);
     210                 : }
     211                 : static inline Datum
     212           16433 : PathPGetDatum(const PATH *X)
     213                 : {
     214           16433 :     return PointerGetDatum(X);
     215                 : }
     216                 : #define PG_GETARG_PATH_P(n)      DatumGetPathP(PG_GETARG_DATUM(n))
     217 ECB             : #define PG_GETARG_PATH_P_COPY(n) DatumGetPathPCopy(PG_GETARG_DATUM(n))
     218                 : #define PG_RETURN_PATH_P(x)      return PathPGetDatum(x)
     219                 : 
     220                 : static inline LINE *
     221 GNC        9704 : DatumGetLineP(Datum X)
     222                 : {
     223            9704 :     return (LINE *) DatumGetPointer(X);
     224                 : }
     225                 : static inline Datum
     226             309 : LinePGetDatum(const LINE *X)
     227                 : {
     228             309 :     return PointerGetDatum(X);
     229                 : }
     230 ECB             : #define PG_GETARG_LINE_P(n) DatumGetLineP(PG_GETARG_DATUM(n))
     231                 : #define PG_RETURN_LINE_P(x) return LinePGetDatum(x)
     232                 : 
     233                 : static inline BOX *
     234 GNC    48543195 : DatumGetBoxP(Datum X)
     235                 : {
     236        48543195 :     return (BOX *) DatumGetPointer(X);
     237                 : }
     238                 : static inline Datum
     239         1296917 : BoxPGetDatum(const BOX *X)
     240                 : {
     241         1296917 :     return PointerGetDatum(X);
     242                 : }
     243                 : #define PG_GETARG_BOX_P(n) DatumGetBoxP(PG_GETARG_DATUM(n))
     244                 : #define PG_RETURN_BOX_P(x) return BoxPGetDatum(x)
     245                 : 
     246                 : static inline POLYGON *
     247          437832 : DatumGetPolygonP(Datum X)
     248                 : {
     249          437832 :     return (POLYGON *) PG_DETOAST_DATUM(X);
     250                 : }
     251                 : static inline POLYGON *
     252                 : DatumGetPolygonPCopy(Datum X)
     253                 : {
     254                 :     return (POLYGON *) PG_DETOAST_DATUM_COPY(X);
     255                 : }
     256                 : static inline Datum
     257           39612 : PolygonPGetDatum(const POLYGON *X)
     258                 : {
     259           39612 :     return PointerGetDatum(X);
     260                 : }
     261                 : #define PG_GETARG_POLYGON_P(n)      DatumGetPolygonP(PG_GETARG_DATUM(n))
     262                 : #define PG_GETARG_POLYGON_P_COPY(n) DatumGetPolygonPCopy(PG_GETARG_DATUM(n))
     263 ECB             : #define PG_RETURN_POLYGON_P(x)      return PolygonPGetDatum(x)
     264                 : 
     265                 : static inline CIRCLE *
     266 GNC      171565 : DatumGetCircleP(Datum X)
     267                 : {
     268          171565 :     return (CIRCLE *) DatumGetPointer(X);
     269                 : }
     270                 : static inline Datum
     271          100393 : CirclePGetDatum(const CIRCLE *X)
     272                 : {
     273          100393 :     return PointerGetDatum(X);
     274                 : }
     275                 : #define PG_GETARG_CIRCLE_P(n) DatumGetCircleP(PG_GETARG_DATUM(n))
     276 ECB             : #define PG_RETURN_CIRCLE_P(x) return CirclePGetDatum(x)
     277                 : 
     278                 : 
     279                 : /*
     280                 :  * in geo_ops.c
     281                 :  */
     282                 : 
     283                 : extern float8 pg_hypot(float8 x, float8 y);
     284                 : 
     285                 : #endif                          /* GEO_DECLS_H */
        

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