blob: d0e52c02826882b70edd1a61b69c00641fc07d85 (
plain) (
blame)
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
|
/* See LICENSE file for copyright and license details. */
#include "internals.h"
void
znot(z_t a, z_t b)
{
size_t bits, n;
if (zzero(b)) {
SET_SIGNUM(a, 0);
return;
}
bits = zbits(b);
SET(a, b);
SET_SIGNUM(a, -zsignum(a));
for (n = a->used; n--;)
a->chars[n] = ~(a->chars[n]);
bits = BITS_IN_LAST_CHAR(bits);
if (bits)
a->chars[a->used - 1] &= ((zahl_char_t)1 << bits) - 1;
while (a->used && !a->chars[a->used - 1])
a->used--;
if (!a->used)
SET_SIGNUM(a, 0);
}
|
