int extract_test(bitset_container_t* B) {
int card = bitset_container_cardinality(B);
uint32_t* out = malloc(sizeof(uint32_t) * (unsigned)card);
bitset_container_to_uint32_array(out, B, 1234);
free(out);
return card;
}
// returns 0 on error, 1 if ok.
int to_uint32_array_test() {
printf("[%s] %s\n", __FILE__, __func__);
for (int offset = 1; offset < 128; offset *= 2) {
bitset_container_t* B = bitset_container_create();
for (int k = 0; k < (1 << 16); k += offset) {
bitset_container_set(B, (uint16_t)k);
}
int card = bitset_container_cardinality(B);
uint32_t* out = malloc(sizeof(uint32_t) * (card + sizeof(__m256i)));
int nc = bitset_container_to_uint32_array(out, B, 0);
if (card != nc) {
printf("Bug %s, line %d \n", __FILE__, __LINE__);
return 0;
}
for (int k = 1; k < nc; ++k) {
if (out[k] != offset + out[k - 1]) {
printf("Bug %s, line %d \n", __FILE__, __LINE__);
return 0;
}
}
free(out);
bitset_container_free(B);
}
return 1;
}
int main() {
int repeat = 500;
int size = (1 << 16) / 3;
tellmeall();
printf("bitset container benchmarks\n");
bitset_container_t* B = bitset_container_create();
BEST_TIME(set_test(B), 0, repeat, size);
int answer = get_test(B);
size = 1 << 16;
BEST_TIME(get_test(B), answer, repeat, size);
BEST_TIME(bitset_container_cardinality(B), answer, repeat, 1);
BEST_TIME(bitset_container_compute_cardinality(B), answer, repeat,
BITSET_CONTAINER_SIZE_IN_WORDS);
size = (1 << 16) / 3;
BEST_TIME(unset_test(B), 0, repeat, size);
bitset_container_free(B);
for (int howmany = 4096; howmany <= (1 << 16); howmany *= 2) {
bitset_container_t* Bt = bitset_container_create();
while (bitset_container_cardinality(Bt) < howmany) {
bitset_container_set(Bt, (uint16_t)pcg32_random());
}
size_t nbrtestvalues = 1024;
uint16_t* testvalues = malloc(nbrtestvalues * sizeof(uint16_t));
printf("\n number of values in container = %d\n",
bitset_container_cardinality(Bt));
int card = bitset_container_cardinality(Bt);
uint32_t* out = malloc(sizeof(uint32_t) * (unsigned)card + 32);
BEST_TIME(bitset_container_to_uint32_array(out, Bt, 1234), card, repeat,
card);
free(out);
BEST_TIME_PRE_ARRAY(Bt, bitset_container_get, bitset_cache_prefetch,
testvalues, nbrtestvalues);
BEST_TIME_PRE_ARRAY(Bt, bitset_container_get, bitset_cache_flush,
testvalues, nbrtestvalues);
free(testvalues);
bitset_container_free(Bt);
}
printf("\n");
bitset_container_t* B1 = bitset_container_create();
for (int x = 0; x < 1 << 16; x += 3) {
bitset_container_set(B1, (uint16_t)x);
}
bitset_container_t* B2 = bitset_container_create();
for (int x = 0; x < 1 << 16; x += 5) {
bitset_container_set(B2, (uint16_t)x);
}
bitset_container_t* BO = bitset_container_create();
BEST_TIME(bitset_container_or_nocard(B1, B2, BO), -1, repeat,
BITSET_CONTAINER_SIZE_IN_WORDS);
answer = bitset_container_compute_cardinality(BO);
BEST_TIME(bitset_container_or(B1, B2, BO), answer, repeat,
BITSET_CONTAINER_SIZE_IN_WORDS);
BEST_TIME(bitset_container_cardinality(BO), answer, repeat, 1);
BEST_TIME(bitset_container_compute_cardinality(BO), answer, repeat,
BITSET_CONTAINER_SIZE_IN_WORDS);
BEST_TIME(bitset_container_and_nocard(B1, B2, BO), -1, repeat,
BITSET_CONTAINER_SIZE_IN_WORDS);
answer = bitset_container_compute_cardinality(BO);
BEST_TIME(bitset_container_and(B1, B2, BO), answer, repeat,
BITSET_CONTAINER_SIZE_IN_WORDS);
BEST_TIME(bitset_container_cardinality(BO), answer, repeat, 1);
BEST_TIME(bitset_container_compute_cardinality(BO), answer, repeat,
BITSET_CONTAINER_SIZE_IN_WORDS);
// next we are going to benchmark conversion from bitset to array (an
// important step)
bitset_container_clear(B1);
for (int k = 0; k < 4096; ++k) {
bitset_container_set(B1, (uint16_t)ranged_random(1 << 16));
}
answer = get_cardinality_through_conversion_to_array(B1);
BEST_TIME(get_cardinality_through_conversion_to_array(B1), answer, repeat,
BITSET_CONTAINER_SIZE_IN_WORDS);
bitset_container_free(BO);
bitset_container_free(B1);
bitset_container_free(B2);
return 0;
}