MobilityDB 1.1
type_out.h
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29
35#ifndef __TYPE_OUT_H__
36#define __TYPE_OUT_H__
37
38/* PostgreSQL */
39#include <postgres.h>
40/* MEOS */
41#include "general/meos_catalog.h"
42
43/*
44 * Export functions
45 */
46
47/*****************************************************************************
48 * Definitions taken from the file liblwgeom_internal.h
49 *****************************************************************************/
50
51/* Any (absolute) values outside this range will be printed in scientific
52 * notation */
53#define OUT_MIN_DOUBLE 1E-8
54#define OUT_MAX_DOUBLE 1E15
55#define OUT_DEFAULT_DECIMAL_DIGITS 15
56
57/* 17 digits are sufficient for round-tripping
58 * Then we might add up to 8 (from OUT_MIN_DOUBLE) max leading zeroes (or
59 * 2 digits for "e+") */
60#define OUT_MAX_DIGITS 17 + 8
61
62/* Limit for the max amount of characters that a double can use, including dot
63 * and sign */
64#define OUT_MAX_BYTES_DOUBLE (1 /* Sign */ + 2 /* 0.x */ + OUT_MAX_DIGITS)
65#define OUT_DOUBLE_BUFFER_SIZE OUT_MAX_BYTES_DOUBLE + 1 /* +1 including NULL */
66
67/*****************************************************************************/
68
69extern uint8_t *datum_as_wkb(Datum value, meosType type, uint8_t variant,
70 size_t *size_out);
71extern char *datum_as_hexwkb(Datum value, meosType type, uint8_t variant,
72 size_t *size);
73
74/*****************************************************************************/
75
76#endif /* __TYPE_OUT_H__ */
meosType
meosType
Enumeration that defines the built-in and temporal types used in MobilityDB.
Definition: meos_catalog.h:53
Datum
uintptr_t Datum
Definition: pg_ext_defs.in.h:4
datum_as_wkb
uint8_t * datum_as_wkb(Datum value, meosType type, uint8_t variant, size_t *size_out)
Return the WKB representation of a datum value.
Definition: type_out.c:2213
datum_as_hexwkb
char * datum_as_hexwkb(Datum value, meosType type, uint8_t variant, size_t *size)
Return the HexWKB representation of a datum value.
Definition: type_out.c:2284
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