blob: 4746e436197a05e99be664293cd187f2c260867b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/*-------------------------------------------------------------------------
*
* bool.c--
* Functions for the built-in type "bool".
*
* Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/bool.c,v 1.7 1997/10/09 05:06:12 thomas Exp $
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "utils/builtins.h" /* where the declarations go */
#include "utils/palloc.h"
/*****************************************************************************
* USER I/O ROUTINES *
*****************************************************************************/
/*
* boolin - converts "t" or "f" to 1 or 0
*
* Check explicitly for "true/TRUE" and allow any odd ASCII value to be "true".
* This handles "true/false", "yes/no", "1/0". - thomas 1997-10-05
*/
bool
boolin(char *b)
{
if (b == NULL)
elog(WARN, "Bad input string for type bool");
return ((bool) (((*b) == 't') || ((*b) == 'T') || ((*b) & 1)));
}
/*
* boolout - converts 1 or 0 to "t" or "f"
*/
char *
boolout(bool b)
{
char *result = (char *) palloc(2);
*result = (b) ? 't' : 'f';
result[1] = '\0';
return (result);
}
/*****************************************************************************
* PUBLIC ROUTINES *
*****************************************************************************/
bool
booleq(bool arg1, bool arg2)
{
return (arg1 == arg2);
}
bool
boolne(bool arg1, bool arg2)
{
return (arg1 != arg2);
}
bool
boollt(bool arg1, bool arg2)
{
return (arg1 < arg2);
}
bool
boolgt(bool arg1, bool arg2)
{
return (arg1 > arg2);
}
|
