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
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
/* Seconds to Hour:Minute:Seconds and back
* Copyright (C) 1998 J.A. Bezemer
*
* Licensed under the terms of the GNU General Public License.
* ABSOLUTELY NO WARRANTY.
* See the file `COPYING' in this directory.
*/
#include <string.h>
#include <stdio.h>
#include <math.h>
void
secs2hms (long seconds, char *outstring) /* 3610 -> 1:00:10 */
{
sprintf (outstring, "%ld:%02ld:%02ld", seconds / 3600,
(seconds / 60) % 60,
seconds % 60);
}
void
fsec2hmsf (double seconds, char *outstring)
{
double intpart = 0;
double floatpart;
long i;
char helpstring[250];
floatpart = modf (seconds, &intpart);
i = intpart;
secs2hms (i, outstring);
sprintf (helpstring, "%.3f", floatpart);
strcat (outstring, helpstring + 1);
}
int
hmsf2fsec (char *instring, double *seconds)
/* returns 0: failure, 1: success; instring will be modified. */
{
char *charptr;
int i = 0;
if (!strlen (instring))
return 0; /* empty string */
*seconds = 0;
/* seconds */
charptr = strrchr (instring, ':');
if (charptr == NULL)
charptr = instring;
else
{
*charptr = '\0'; /* put a '\0' in place of the ':' */
charptr++;
}
/* charptr is now start of seconds */
if (!sscanf (charptr, "%lf", seconds))
return 0;
if (charptr == instring)
return 1;
/* minutes */
charptr = strrchr (instring, ':');
if (charptr == NULL)
charptr = instring;
else
{
*charptr = '\0'; /* put a '\0' in place of the ':' */
charptr++;
}
/* charptr is now start of minutes */
if (!sscanf (charptr, "%d", &i))
return 0;
*seconds += i * 60;
if (charptr == instring)
return 1;
/* hours */
charptr = strrchr (instring, ':');
if (charptr == NULL)
charptr = instring;
else
{
*charptr = '\0'; /* put a '\0' in place of the ':' */
charptr++;
}
/* charptr is now start of hours */
if (!sscanf (charptr, "%d", &i))
return 0;
*seconds += i * 3600;
if (charptr == instring)
return 1; /* nothing before hours: OK */
return 0; /* something before hours. days?? */
}
|
