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	DatumGetPointP(X)   ((Point *) DatumGetPointer(X))
#define	PointPGetDatum(X)   PointerGetDatum(X)
#define	PG_GETARG_POINT_P(n)   DatumGetPointP(PG_GETARG_DATUM(n))
#define	PG_RETURN_POINT_P(x)   return PointPGetDatum(x)
#define	DatumGetLsegP(X)   ((LSEG *) DatumGetPointer(X))
#define	LsegPGetDatum(X)   PointerGetDatum(X)
#define	PG_GETARG_LSEG_P(n)   DatumGetLsegP(PG_GETARG_DATUM(n))
#define	PG_RETURN_LSEG_P(x)   return LsegPGetDatum(x)
#define	DatumGetPathP(X)   ((PATH *) PG_DETOAST_DATUM(X))
#define	DatumGetPathPCopy(X)   ((PATH *) PG_DETOAST_DATUM_COPY(X))
#define	PathPGetDatum(X)   PointerGetDatum(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	DatumGetLineP(X)   ((LINE *) DatumGetPointer(X))
#define	LinePGetDatum(X)   PointerGetDatum(X)
#define	PG_GETARG_LINE_P(n)   DatumGetLineP(PG_GETARG_DATUM(n))
#define	PG_RETURN_LINE_P(x)   return LinePGetDatum(x)
#define	DatumGetBoxP(X)   ((BOX *) DatumGetPointer(X))
#define	BoxPGetDatum(X)   PointerGetDatum(X)
#define	PG_GETARG_BOX_P(n)   DatumGetBoxP(PG_GETARG_DATUM(n))
#define	PG_RETURN_BOX_P(x)   return BoxPGetDatum(x)
#define	DatumGetPolygonP(X)   ((POLYGON *) PG_DETOAST_DATUM(X))
#define	DatumGetPolygonPCopy(X)   ((POLYGON *) PG_DETOAST_DATUM_COPY(X))
#define	PolygonPGetDatum(X)   PointerGetDatum(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	DatumGetCircleP(X)   ((CIRCLE *) DatumGetPointer(X))
#define	CirclePGetDatum(X)   PointerGetDatum(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)
float8	pg_hypot (float8 x, float8 y)

Macro Definition Documentation

BoxPGetDatum

#define BoxPGetDatum

(

X

)

PointerGetDatum(X)

Definition at line 198 of file geo_decls.h.

CirclePGetDatum

#define CirclePGetDatum

(

X

)

PointerGetDatum(X)

Definition at line 210 of file geo_decls.h.

DatumGetBoxP

#define DatumGetBoxP

(

X

)

((BOX *) DatumGetPointer(X))

Definition at line 197 of file geo_decls.h.

DatumGetCircleP

#define DatumGetCircleP

(

X

)

((CIRCLE *) DatumGetPointer(X))

Definition at line 209 of file geo_decls.h.

DatumGetLineP

#define DatumGetLineP

(

X

)

((LINE *) DatumGetPointer(X))

Definition at line 192 of file geo_decls.h.

DatumGetLsegP

#define DatumGetLsegP

(

X

)

((LSEG *) DatumGetPointer(X))

Definition at line 180 of file geo_decls.h.

DatumGetPathP

#define DatumGetPathP

(

X

)

((PATH *) PG_DETOAST_DATUM(X))

Definition at line 185 of file geo_decls.h.

DatumGetPathPCopy

#define DatumGetPathPCopy

(

X

)

((PATH *) PG_DETOAST_DATUM_COPY(X))

Definition at line 186 of file geo_decls.h.

DatumGetPointP

#define DatumGetPointP

(

X

)

((Point *) DatumGetPointer(X))

Definition at line 175 of file geo_decls.h.

DatumGetPolygonP

#define DatumGetPolygonP

(

X

)

((POLYGON *) PG_DETOAST_DATUM(X))

Definition at line 202 of file geo_decls.h.

DatumGetPolygonPCopy

#define DatumGetPolygonPCopy

(

X

)

((POLYGON *) PG_DETOAST_DATUM_COPY(X))

Definition at line 203 of file geo_decls.h.

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.

LinePGetDatum

#define LinePGetDatum

(

X

)

PointerGetDatum(X)

Definition at line 193 of file geo_decls.h.

LsegPGetDatum

#define LsegPGetDatum

(

X

)

PointerGetDatum(X)

Definition at line 181 of file geo_decls.h.

PathPGetDatum

#define PathPGetDatum

(

X

)

PointerGetDatum(X)

Definition at line 187 of file geo_decls.h.

PG_GETARG_BOX_P

#define PG_GETARG_BOX_P

(

n

)

DatumGetBoxP(PG_GETARG_DATUM(n))

Definition at line 199 of file geo_decls.h.

PG_GETARG_CIRCLE_P

#define PG_GETARG_CIRCLE_P

(

n

)

DatumGetCircleP(PG_GETARG_DATUM(n))

Definition at line 211 of file geo_decls.h.

PG_GETARG_LINE_P

#define PG_GETARG_LINE_P

(

n

)

DatumGetLineP(PG_GETARG_DATUM(n))

Definition at line 194 of file geo_decls.h.

PG_GETARG_LSEG_P

#define PG_GETARG_LSEG_P

(

n

)

DatumGetLsegP(PG_GETARG_DATUM(n))

Definition at line 182 of file geo_decls.h.

PG_GETARG_PATH_P

#define PG_GETARG_PATH_P

(

n

)

DatumGetPathP(PG_GETARG_DATUM(n))

Definition at line 188 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 189 of file geo_decls.h.

PG_GETARG_POINT_P

#define PG_GETARG_POINT_P

(

n

)

DatumGetPointP(PG_GETARG_DATUM(n))

Definition at line 177 of file geo_decls.h.

PG_GETARG_POLYGON_P

#define PG_GETARG_POLYGON_P

(

n

)

DatumGetPolygonP(PG_GETARG_DATUM(n))

Definition at line 205 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 206 of file geo_decls.h.

PG_RETURN_BOX_P

#define PG_RETURN_BOX_P

(

x

)

return BoxPGetDatum(x)

Definition at line 200 of file geo_decls.h.

PG_RETURN_CIRCLE_P

#define PG_RETURN_CIRCLE_P

(

x

)

return CirclePGetDatum(x)

Definition at line 212 of file geo_decls.h.

PG_RETURN_LINE_P

#define PG_RETURN_LINE_P

(

x

)

return LinePGetDatum(x)

Definition at line 195 of file geo_decls.h.

PG_RETURN_LSEG_P

#define PG_RETURN_LSEG_P

(

x

)

return LsegPGetDatum(x)

Definition at line 183 of file geo_decls.h.

PG_RETURN_PATH_P

#define PG_RETURN_PATH_P

(

x

)

return PathPGetDatum(x)

Definition at line 190 of file geo_decls.h.

PG_RETURN_POINT_P

#define PG_RETURN_POINT_P

(

x

)

return PointPGetDatum(x)

Definition at line 178 of file geo_decls.h.

PG_RETURN_POLYGON_P

#define PG_RETURN_POLYGON_P

(

x

)

return PolygonPGetDatum(x)

Definition at line 207 of file geo_decls.h.

PointPGetDatum

#define PointPGetDatum

(

X

)

PointerGetDatum(X)

Definition at line 176 of file geo_decls.h.

PolygonPGetDatum

#define PolygonPGetDatum

(

X

)

PointerGetDatum(X)

Definition at line 204 of file geo_decls.h.

Function Documentation

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().

pg_hypot()

float8 pg_hypot	(	float8	x,
		float8	y
	)

Definition at line 5473 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.