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Justine Tunney 2020-06-15 07:18:57 -07:00
commit c91b3c5006
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examples/printprimes.c Normal file
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#if 0
/*─────────────────────────────────────────────────────────────────╗
│ To the extent possible under law, Justine Tunney has waived │
│ all copyright and related or neighboring rights to this file, │
│ as it is written in the following disclaimers: │
│ • http://unlicense.org/ │
│ • http://creativecommons.org/publicdomain/zero/1.0/ │
╚─────────────────────────────────────────────────────────────────*/
#endif
#include "libc/conv/itoa.h"
#include "libc/math.h"
#include "libc/stdio/stdio.h"
int main(int argc, char *argv[]) {
char buf[32];
bool isprime;
long i, j, k, n, m;
k = 0;
n = pow(2, 32);
printf("2\n");
for (i = 3; i < n; ++i) {
isprime = true;
for (m = sqrt(i) + 1, j = 2; j < m; ++j) {
if (i % j == 0) {
isprime = false;
break;
}
}
if (isprime) {
int64toarray_radix10(i, buf);
fputs(buf, stdout);
fputc('\n', stdout);
if (k++ % 100 == 0) {
fprintf(stderr, "\r%20d", i);
}
}
}
return 0;
}