geo_decls.h File Reference

#include <math.h>
#include "fmgr.h"

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Data Structures
struct	Point
struct	LSEG
struct	PATH
struct	LINE
struct	BOX
struct	POLYGON
struct	CIRCLE

Macros
#define	EPSILON   1.0E-06
#define	FPzero(A)   (fabs(A) <= EPSILON)
#define	HYPOT(A, B)   pg_hypot(A, B)
#define	PG_GETARG_POINT_P(n)   DatumGetPointP(PG_GETARG_DATUM(n))
#define	PG_RETURN_POINT_P(x)   return PointPGetDatum(x)
#define	PG_GETARG_LSEG_P(n)   DatumGetLsegP(PG_GETARG_DATUM(n))
#define	PG_RETURN_LSEG_P(x)   return LsegPGetDatum(x)
#define	PG_GETARG_PATH_P(n)   DatumGetPathP(PG_GETARG_DATUM(n))
#define	PG_GETARG_PATH_P_COPY(n)   DatumGetPathPCopy(PG_GETARG_DATUM(n))
#define	PG_RETURN_PATH_P(x)   return PathPGetDatum(x)
#define	PG_GETARG_LINE_P(n)   DatumGetLineP(PG_GETARG_DATUM(n))
#define	PG_RETURN_LINE_P(x)   return LinePGetDatum(x)
#define	PG_GETARG_BOX_P(n)   DatumGetBoxP(PG_GETARG_DATUM(n))
#define	PG_RETURN_BOX_P(x)   return BoxPGetDatum(x)
#define	PG_GETARG_POLYGON_P(n)   DatumGetPolygonP(PG_GETARG_DATUM(n))
#define	PG_GETARG_POLYGON_P_COPY(n)   DatumGetPolygonPCopy(PG_GETARG_DATUM(n))
#define	PG_RETURN_POLYGON_P(x)   return PolygonPGetDatum(x)
#define	PG_GETARG_CIRCLE_P(n)   DatumGetCircleP(PG_GETARG_DATUM(n))
#define	PG_RETURN_CIRCLE_P(x)   return CirclePGetDatum(x)

Functions
static bool	FPeq (double A, double B)
static bool	FPne (double A, double B)
static bool	FPlt (double A, double B)
static bool	FPle (double A, double B)
static bool	FPgt (double A, double B)
static bool	FPge (double A, double B)
static Point *	DatumGetPointP (Datum X)
static Datum	PointPGetDatum (const Point *X)
static LSEG *	DatumGetLsegP (Datum X)
static Datum	LsegPGetDatum (const LSEG *X)
static PATH *	DatumGetPathP (Datum X)
static PATH *	DatumGetPathPCopy (Datum X)
static Datum	PathPGetDatum (const PATH *X)
static LINE *	DatumGetLineP (Datum X)
static Datum	LinePGetDatum (const LINE *X)
static BOX *	DatumGetBoxP (Datum X)
static Datum	BoxPGetDatum (const BOX *X)
static POLYGON *	DatumGetPolygonP (Datum X)
static POLYGON *	DatumGetPolygonPCopy (Datum X)
static Datum	PolygonPGetDatum (const POLYGON *X)
static CIRCLE *	DatumGetCircleP (Datum X)
static Datum	CirclePGetDatum (const CIRCLE *X)
float8	pg_hypot (float8 x, float8 y)

Macro Definition Documentation

EPSILON

#define EPSILON   1.0E-06

Definition at line 41 of file geo_decls.h.

FPzero

#define FPzero

(

A

)

(fabs(A) <= EPSILON)

Definition at line 44 of file geo_decls.h.

HYPOT

#define HYPOT	(		A,
			B
	)		pg_hypot(A, B)

Definition at line 91 of file geo_decls.h.

PG_GETARG_BOX_P

#define PG_GETARG_BOX_P

(

n

)

DatumGetBoxP(PG_GETARG_DATUM(n))

Definition at line 243 of file geo_decls.h.

PG_GETARG_CIRCLE_P

#define PG_GETARG_CIRCLE_P

(

n

)

DatumGetCircleP(PG_GETARG_DATUM(n))

Definition at line 275 of file geo_decls.h.

PG_GETARG_LINE_P

#define PG_GETARG_LINE_P

(

n

)

DatumGetLineP(PG_GETARG_DATUM(n))

Definition at line 230 of file geo_decls.h.

PG_GETARG_LSEG_P

#define PG_GETARG_LSEG_P

(

n

)

DatumGetLsegP(PG_GETARG_DATUM(n))

Definition at line 198 of file geo_decls.h.

PG_GETARG_PATH_P

#define PG_GETARG_PATH_P

(

n

)

DatumGetPathP(PG_GETARG_DATUM(n))

Definition at line 216 of file geo_decls.h.

PG_GETARG_PATH_P_COPY

#define PG_GETARG_PATH_P_COPY

(

n

)

DatumGetPathPCopy(PG_GETARG_DATUM(n))

Definition at line 217 of file geo_decls.h.

PG_GETARG_POINT_P

#define PG_GETARG_POINT_P

(

n

)

DatumGetPointP(PG_GETARG_DATUM(n))

Definition at line 185 of file geo_decls.h.

PG_GETARG_POLYGON_P

#define PG_GETARG_POLYGON_P

(

n

)

DatumGetPolygonP(PG_GETARG_DATUM(n))

Definition at line 261 of file geo_decls.h.

PG_GETARG_POLYGON_P_COPY

#define PG_GETARG_POLYGON_P_COPY

(

n

)

DatumGetPolygonPCopy(PG_GETARG_DATUM(n))

Definition at line 262 of file geo_decls.h.

PG_RETURN_BOX_P

#define PG_RETURN_BOX_P

(

x

)

return BoxPGetDatum(x)

Definition at line 244 of file geo_decls.h.

PG_RETURN_CIRCLE_P

#define PG_RETURN_CIRCLE_P

(

x

)

return CirclePGetDatum(x)

Definition at line 276 of file geo_decls.h.

PG_RETURN_LINE_P

#define PG_RETURN_LINE_P

(

x

)

return LinePGetDatum(x)

Definition at line 231 of file geo_decls.h.

PG_RETURN_LSEG_P

#define PG_RETURN_LSEG_P

(

x

)

return LsegPGetDatum(x)

Definition at line 199 of file geo_decls.h.

PG_RETURN_PATH_P

#define PG_RETURN_PATH_P

(

x

)

return PathPGetDatum(x)

Definition at line 218 of file geo_decls.h.

PG_RETURN_POINT_P

#define PG_RETURN_POINT_P

(

x

)

return PointPGetDatum(x)

Definition at line 186 of file geo_decls.h.

PG_RETURN_POLYGON_P

#define PG_RETURN_POLYGON_P

(

x

)

return PolygonPGetDatum(x)

Definition at line 263 of file geo_decls.h.

Function Documentation

BoxPGetDatum()

static Datum BoxPGetDatum ( const BOX *  X )

inlinestatic

Definition at line 239 of file geo_decls.h.

{
    return PointerGetDatum(X);
}

References PointerGetDatum().

Referenced by fallbackSplit(), gist_point_compress(), spg_box_quad_choose(), spg_box_quad_leaf_consistent(), spg_box_quad_picksplit(), spg_kd_inner_consistent(), and spg_quad_inner_consistent().

CirclePGetDatum()

static Datum CirclePGetDatum ( const CIRCLE *  X )

inlinestatic

Definition at line 271 of file geo_decls.h.

{
    return PointerGetDatum(X);
}

References PointerGetDatum().

Referenced by gist_point_consistent().

DatumGetBoxP()

static BOX* DatumGetBoxP ( Datum  X )

inlinestatic

Definition at line 234 of file geo_decls.h.

{
    return (BOX *) DatumGetPointer(X);
}

References DatumGetPointer().

Referenced by fallbackSplit(), gist_bbox_distance(), gist_bbox_zorder_abbrev_convert(), gist_bbox_zorder_cmp(), gist_box_consistent(), gist_box_penalty(), gist_box_picksplit(), gist_box_union(), gist_circle_consistent(), gist_point_consistent(), gist_point_distance(), gist_point_fetch(), gist_poly_consistent(), spg_box_quad_choose(), spg_box_quad_get_scankey_bbox(), spg_box_quad_inner_consistent(), spg_box_quad_picksplit(), spg_kd_inner_consistent(), spg_key_orderbys_distances(), and spg_quad_inner_consistent().

DatumGetCircleP()

static CIRCLE* DatumGetCircleP ( Datum  X )

inlinestatic

Definition at line 266 of file geo_decls.h.

{
    return (CIRCLE *) DatumGetPointer(X);
}

References DatumGetPointer().

Referenced by gist_circle_compress().

DatumGetLineP()

static LINE* DatumGetLineP ( Datum  X )

inlinestatic

Definition at line 221 of file geo_decls.h.

{
    return (LINE *) DatumGetPointer(X);
}

References DatumGetPointer().

DatumGetLsegP()

static LSEG* DatumGetLsegP ( Datum  X )

inlinestatic

Definition at line 189 of file geo_decls.h.

{
    return (LSEG *) DatumGetPointer(X);
}

References DatumGetPointer().

DatumGetPathP()

static PATH* DatumGetPathP ( Datum  X )

inlinestatic

Definition at line 202 of file geo_decls.h.

{
    return (PATH *) PG_DETOAST_DATUM(X);
}

References PG_DETOAST_DATUM.

DatumGetPathPCopy()

static PATH* DatumGetPathPCopy ( Datum  X )

inlinestatic

Definition at line 207 of file geo_decls.h.

{
    return (PATH *) PG_DETOAST_DATUM_COPY(X);
}

References PG_DETOAST_DATUM_COPY.

DatumGetPointP()

static Point* DatumGetPointP ( Datum  X )

inlinestatic

Definition at line 176 of file geo_decls.h.

{
    return (Point *) DatumGetPointer(X);
}

References DatumGetPointer().

Referenced by gist_bbox_distance(), gist_point_compress(), spg_box_quad_inner_consistent(), spg_kd_choose(), spg_kd_inner_consistent(), spg_kd_picksplit(), spg_key_orderbys_distances(), spg_quad_choose(), spg_quad_inner_consistent(), spg_quad_leaf_consistent(), and spg_quad_picksplit().

DatumGetPolygonP()

static POLYGON* DatumGetPolygonP ( Datum  X )

inlinestatic

Definition at line 247 of file geo_decls.h.

{
    return (POLYGON *) PG_DETOAST_DATUM(X);
}

References PG_DETOAST_DATUM.

Referenced by gist_poly_compress(), and spg_box_quad_get_scankey_bbox().

DatumGetPolygonPCopy()

static POLYGON* DatumGetPolygonPCopy ( Datum  X )

inlinestatic

Definition at line 252 of file geo_decls.h.

{
    return (POLYGON *) PG_DETOAST_DATUM_COPY(X);
}

References PG_DETOAST_DATUM_COPY.

FPeq()

static bool FPeq ( double  A, double  B  )

inlinestatic

Definition at line 47 of file geo_decls.h.

{
    return A == B || fabs(A - B) <= EPSILON;
}

References EPSILON.

Referenced by box_eq(), circle_eq(), circle_same(), gist_point_consistent_internal(), line_eq(), line_interpt_line(), line_perp(), lseg_contain_point(), lseg_horizontal(), lseg_parallel(), lseg_perp(), lseg_vertical(), on_ppath(), point_eq_point(), point_horiz(), point_invsl(), point_sl(), and point_vert().

FPge()

static bool FPge ( double  A, double  B  )

inlinestatic

Definition at line 77 of file geo_decls.h.

{
    return A + EPSILON >= B;
}

References EPSILON.

Referenced by box_above_eq(), box_contain_box(), box_ge(), box_overabove(), box_overright(), circle_ge(), circle_overabove(), circle_overright(), contain2D(), contained2D(), gist_point_consistent_internal(), lseg_crossing(), lseg_ge(), overHigher2D(), and overlap2D().

FPgt()

static bool FPgt ( double  A, double  B  )

inlinestatic

Definition at line 71 of file geo_decls.h.

{
    return A > B + EPSILON;
}

References EPSILON.

Referenced by box_above(), box_gt(), box_right(), circle_above(), circle_gt(), circle_right(), gist_point_consistent_internal(), higher2D(), lseg_crossing(), lseg_gt(), point_above(), point_right(), and spg_kd_inner_consistent().

FPle()

static bool FPle ( double  A, double  B  )

inlinestatic

Definition at line 65 of file geo_decls.h.

{
    return A <= B + EPSILON;
}

References EPSILON.

Referenced by box_below_eq(), box_contain_box(), box_le(), box_ov(), box_overbelow(), box_overleft(), circle_contain(), circle_contained(), circle_le(), circle_overbelow(), circle_overlap(), circle_overleft(), contain2D(), contained2D(), gist_point_consistent_internal(), lseg_crossing(), lseg_le(), overlap2D(), and overLower2D().

FPlt()

static bool FPlt ( double  A, double  B  )

inlinestatic

Definition at line 59 of file geo_decls.h.

{
    return A + EPSILON < B;
}

References EPSILON.

Referenced by box_below(), box_left(), box_lt(), circle_below(), circle_left(), circle_lt(), gist_point_consistent_internal(), lower2D(), lseg_crossing(), lseg_lt(), point_below(), point_left(), and spg_kd_inner_consistent().

FPne()

static bool FPne ( double  A, double  B  )

inlinestatic

Definition at line 53 of file geo_decls.h.

{
    return A != B && fabs(A - B) > EPSILON;
}

References EPSILON.

Referenced by circle_ne().

LinePGetDatum()

static Datum LinePGetDatum ( const LINE *  X )

inlinestatic

Definition at line 226 of file geo_decls.h.

{
    return PointerGetDatum(X);
}

References PointerGetDatum().

LsegPGetDatum()

static Datum LsegPGetDatum ( const LSEG *  X )

inlinestatic

Definition at line 194 of file geo_decls.h.

{
    return PointerGetDatum(X);
}

References PointerGetDatum().

Referenced by interpt_pp().

PathPGetDatum()

static Datum PathPGetDatum ( const PATH *  X )

inlinestatic

Definition at line 212 of file geo_decls.h.

{
    return PointerGetDatum(X);
}

References PointerGetDatum().

pg_hypot()

float8 pg_hypot	(	float8	x,
		float8	y
	)

Definition at line 5476 of file geo_ops.c.

{
    float8      yx,
                result;
 
    /* Handle INF and NaN properly */
    if (isinf(x) || isinf(y))
        return get_float8_infinity();
 
    if (isnan(x) || isnan(y))
        return get_float8_nan();
 
    /* Else, drop any minus signs */
    x = fabs(x);
    y = fabs(y);
 
    /* Swap x and y if needed to make x the larger one */
    if (x < y)
    {
        float8      temp = x;
 
        x = y;
        y = temp;
    }
 
    /*
     * If y is zero, the hypotenuse is x.  This test saves a few cycles in
     * such cases, but more importantly it also protects against
     * divide-by-zero errors, since now x >= y.
     */
    if (y == 0.0)
        return x;
 
    /* Determine the hypotenuse */
    yx = y / x;
    result = x * sqrt(1.0 + (yx * yx));
 
    if (unlikely(isinf(result)))
        float_overflow_error();
    if (unlikely(result == 0.0))
        float_underflow_error();
 
    return result;
}

References float_overflow_error(), float_underflow_error(), get_float8_infinity(), get_float8_nan(), unlikely, x, and y.

PointPGetDatum()

static Datum PointPGetDatum ( const Point *  X )

inlinestatic

Definition at line 181 of file geo_decls.h.

{
    return PointerGetDatum(X);
}

References PointerGetDatum().

Referenced by gist_point_consistent(), pt_in_widget(), spg_kd_choose(), spg_kd_picksplit(), spg_quad_choose(), and spg_quad_picksplit().

PolygonPGetDatum()

static Datum PolygonPGetDatum ( const POLYGON *  X )

inlinestatic

Definition at line 257 of file geo_decls.h.

{
    return PointerGetDatum(X);
}

References PointerGetDatum().

Referenced by gist_point_consistent().