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#include <ccan/time/time.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#ifdef FIRST_APPROX
#include "first-approx.c"
#endif
#ifdef SECOND_APPROX
#include "second-approx.c"
#endif
#ifdef NO_APPROX
#include "no-approx.c"
#endif
int main(int argc, char *argv[])
{
struct timespec start, val, val2, end, diff;
unsigned int i, j, limit = atoi(argv[1] ?: "100000");
uint64_t val64;
val = start = time_now();
val64 = to_u64(start);
val2.tv_sec = 0;
val2.tv_nsec = 1;
for (j = 0; j < limit; j++) {
for (i = 0; i < limit; i++) {
val = time_add(val, val2);
val64 += to_u64(val2);
}
}
end = time_now();
printf("val64 says %lu.%09lu\n",
from_u64(val64).tv_sec,
from_u64(val64).tv_nsec);
printf("val says %lu.%09lu\n",
val.tv_sec,
val.tv_nsec);
if (time_greater(val, from_u64(val64)))
diff = time_sub(val, from_u64(val64));
else
diff = time_sub(from_u64(val64), val);
printf("Time %lluns, error = %i%%\n",
(long long)time_to_nsec(time_sub(end, start)),
(int)(100 * time_to_nsec(diff) / time_to_nsec(time_sub(val, start))));
return 0;
}
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