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also print bit transition count

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This commit is contained in:
Ahmet Inan 2025-06-14 10:40:29 +02:00
commit 8982e7843a
1 changed files with 13 additions and 2 deletions
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15
tools/xorshift.c
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@ -16,6 +16,16 @@ int next(int y, int a, int b, int c, int mask) {
return y;
}
int popcnt(int x)
{
int cnt = 0;
while (x) {
++cnt;
x &= x-1;
}
return cnt;
}
int main(int argc, char **argv) {
if (argc != 2 && argc != 5)
return 1;
@ -27,8 +37,9 @@ int main(int argc, char **argv) {
int b = atoi(argv[3]);
int c = atoi(argv[4]);
for (int y = seed, i = mask; i; --i) {
printf("%d\n", y);
y = next(y, a, b, c, mask);
int x = next(y, a, b, c, mask);
printf("%d %d\n", y, popcnt(x ^ y));
y = x;
}
return 0;
}