blob: 9904b4f5de175936a90e07fb89a48e2158773418 (
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
|
/*
* tsftomsu - convert from a time stamp fraction to milliseconds
*/
#include "ntp_fp.h"
#include "ntp_stdlib.h"
int
tsftomsu(tsf, round)
u_long tsf;
int round;
{
register long val_ui, val_uf;
register long tmp_ui, tmp_uf;
register int i;
/*
* Essentially, multiply by 10 three times in l_fp form.
* The integral part is the milliseconds.
*/
val_ui = 0;
val_uf = tsf;
for (i = 3; i > 0; i--) {
M_LSHIFT(val_ui, val_uf);
tmp_ui = val_ui;
tmp_uf = val_uf;
M_LSHIFT(val_ui, val_uf);
M_LSHIFT(val_ui, val_uf);
M_ADD(val_ui, val_uf, tmp_ui, tmp_uf);
}
/*
* Round the value if need be, then return it.
*/
if (round && (val_uf & 0x80000000))
val_ui++;
return (int)val_ui;
}
|
