GRASS Programmer's Manual
6.4.2(2012)
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create.c
Go to the documentation of this file.
1
#include <stdio.h>
2
#include <stdlib.h>
3
#include <grass/btree.h>
4
5
int
btree_create
(BTREE * B,
int
(*cmp) (
const
void
*,
const
void
*),
int
incr)
6
{
7
if
(incr <= 0)
8
incr = 1;
9
10
B->N = 0;
11
B->cur = 0;
12
B->tlen = B->incr = incr;
13
14
/* must have at least 2 nodes, since node[0] is never used */
15
if
(B->tlen == 1)
16
B->tlen = 2;
17
18
B->cmp = cmp;
19
B->node = (BTREE_NODE *) malloc(B->tlen *
sizeof
(BTREE_NODE));
20
if
(B->node ==
NULL
)
21
return
0;
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return
1;
23
}
lib
btree
create.c
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