blob: 6073848fb2a6fe518f64e72be081c0a334e6016a (
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
|
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "libgcc.h"
uint64_t __udivmoddi4(uint64_t num, uint64_t den, uint64_t *rem_p)
{
uint64_t quot = 0, qbit = 1;
if (den == 0) {
return 1 / ((unsigned int)den); /* Intentional divide by zero, without
triggering a compiler warning which
would abort the build */
}
/* Left-justify denominator and count shift */
while ((int64_t)den >= 0) {
den <<= 1;
qbit <<= 1;
}
while (qbit) {
if (den <= num) {
num -= den;
quot += qbit;
}
den >>= 1;
qbit >>= 1;
}
if (rem_p)
*rem_p = num;
return quot;
}
|
