GRASS 8 Programmer's Manual 8.6.0dev(2026)-1d1e47ad9d
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xdrdouble.c
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1/*!
2 \file lib/db/dbmi_base/xdrdouble.c
3
4 \brief DBMI Library (base) - external data representation (double)
5
6 (C) 1999-2009, 2011 by the GRASS Development Team
7
8 This program is free software under the GNU General Public License
9 (>=v2). Read the file COPYING that comes with GRASS for details.
10
11 \author Joel Jones (CERL/UIUC), Radim Blazek, Brad Douglas, Markus Neteler
12 \author Doxygenized by Martin Landa <landa.martin gmail.com> (2011)
13 */
14
15#include "xdr.h"
16
17/*!
18 \brief Send double
19
20 \param d
21
22 \return
23 */
24int db__send_double(double d)
25{
26 int stat = DB_OK;
27
28 if (!db__send(&d, sizeof(d)))
29 stat = DB_PROTOCOL_ERR;
30
31 if (stat == DB_PROTOCOL_ERR)
32 db_protocol_error();
33
34 return stat;
35}
36
37/*!
38 \brief Receive double
39
40 \param d
41 */
42int db__recv_double(double *d)
43{
44 int stat = DB_OK;
45
46 if (!db__recv(d, sizeof(*d)))
47 stat = DB_PROTOCOL_ERR;
48
49 if (stat == DB_PROTOCOL_ERR)
50 db_protocol_error();
51
52 return stat;
53}
54
55/*!
56 \brief Send double array
57
58 \param x
59 \param n
60
61 \return
62 */
63int db__send_double_array(const double *x, int n)
64{
65 int stat = DB_OK;
66
67 if (!db__send(&n, sizeof(n)))
68 stat = DB_PROTOCOL_ERR;
69
70 if (!db__send(x, n * sizeof(*x)))
71 stat = DB_PROTOCOL_ERR;
72
73 if (stat == DB_PROTOCOL_ERR)
74 db_protocol_error();
75
76 return stat;
77}
78
79/*!
80 \brief Receive double array
81
82 Returns an allocated array of doubles
83 Caller is responsible for free()
84
85 \param x
86 \param n
87
88 \return
89 */
90int db__recv_double_array(double **x, int *n)
91{
92 int stat = DB_OK;
93 int count = 0;
94 double *a = NULL;
95
96 if (!db__recv(&count, sizeof(count)))
97 stat = DB_PROTOCOL_ERR;
98
99 *n = count;
100
101 *x = a = (double *)db_calloc(count, sizeof(*a));
102
103 if (!db__recv(a, count * sizeof(*a)))
104 stat = DB_PROTOCOL_ERR;
105
106 if (stat == DB_PROTOCOL_ERR)
107 db_protocol_error();
108
109 return stat;
110}
NULL
#define NULL
Definition ccmath.h:32
AMI_STREAM
Definition ami_stream.h:153
db__recv
int db__recv(void *buf, size_t size)
Definition db/dbmi_base/xdr.c:100
db__send
int db__send(const void *buf, size_t size)
?
Definition db/dbmi_base/xdr.c:89
DB_PROTOCOL_ERR
#define DB_PROTOCOL_ERR
Definition dbmi.h:75
DB_OK
#define DB_OK
Definition dbmi.h:71
db_calloc
void * db_calloc(int, int)
Allocate memory.
Definition db/dbmi_base/alloc.c:69
db_protocol_error
void db_protocol_error(void)
Report protocol error.
Definition db/dbmi_base/error.c:85
count
int count
db__recv_double_array
int db__recv_double_array(double **x, int *n)
Receive double array.
Definition xdrdouble.c:90
db__send_double
int db__send_double(double d)
Send double.
Definition xdrdouble.c:24
db__send_double_array
int db__send_double_array(const double *x, int n)
Send double array.
Definition xdrdouble.c:63
db__recv_double
int db__recv_double(double *d)
Receive double.
Definition xdrdouble.c:42
x
#define x