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#include <randombytes.h>
/* return zero for all inputs */
static unsigned char z(unsigned char x) {
unsigned long long z = (unsigned long long) x + 1ULL;
unsigned long long t = z;
long long i;
for (i = 6; i >= 0; --i) {
t = (t * t) % 257;
t = (t * z) % 257;
}
t = (t * z) % 257;
return (unsigned char) t - 1;
}
int main(int argc, char **argv) {
unsigned char buf[32], ret = 0;
const char *source;
unsigned long long i;
(void) argc;
(void) argv;
randombytes(buf, sizeof buf);
for (i = 0; i < sizeof buf; ++i) ret |= z(buf[i]);
source = randombytes_source();
for (i = 0; source[i]; ++i) ret |= z((unsigned char) source[i]);
return z(ret);
}
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