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#include <ccan/tally/tally.c>
#include <ccan/tap/tap.h>
int main(void)
{
int i;
struct tally *tally = tally_new(100);
ssize_t min, max, mode;
size_t err;
max = (ssize_t)~(1ULL << (sizeof(max)*CHAR_BIT - 1));
min = (ssize_t)(1ULL << (sizeof(max)*CHAR_BIT - 1));
plan_tests(100 + 50 + 100 + 100 + 10);
/* Simple mode test: should always be around 0 (we add that twice). */
for (i = 0; i < 100; i++) {
tally_add(tally, i);
tally_add(tally, -i);
mode = tally_approx_mode(tally, &err);
if (i < 50)
ok1(err == 0);
ok1(mode - (ssize_t)err <= 0 && mode + (ssize_t)err >= 0);
}
/* Works for big values too... */
for (i = 0; i < 100; i++) {
tally_add(tally, max - i);
tally_add(tally, min + 1 + i);
mode = tally_approx_mode(tally, &err);
ok1(mode - (ssize_t)err <= 0 && mode + (ssize_t)err >= 0);
}
free(tally);
tally = tally_new(10);
tally_add(tally, 0);
for (i = 0; i < 100; i++) {
tally_add(tally, i);
mode = tally_approx_mode(tally, &err);
if (i < 10)
ok1(err == 0);
ok1(mode - (ssize_t)err <= 0 && mode + (ssize_t)err >= 0);
}
free(tally);
return exit_status();
}
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