diff options
Diffstat (limited to 'misc/examples/prime.c')
| -rw-r--r-- | misc/examples/prime.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/misc/examples/prime.c b/misc/examples/prime.c index c3a0663c..c3db707d 100644 --- a/misc/examples/prime.c +++ b/misc/examples/prime.c @@ -28,15 +28,18 @@ cbits sieveOfEratosthenes(llong n) int main(void) { + llong n = 100000000; printf("Computing prime numbers up to %lld\n", n); - clock_t t1 = clock(); + clock_t t = clock(); cbits primes = sieveOfEratosthenes(n + 1); + llong np = cbits_count(&primes); clock_t t2 = clock(); printf("Number of primes: %lld, time: %f\n\n", np, (float)(t2 - t1) / (float)CLOCKS_PER_SEC); + puts("Show all the primes in the range [2, 1000):"); printf("2"); c_forrange (i, 3, 1000, 2) @@ -44,7 +47,9 @@ int main(void) puts("\n"); puts("Show the last 50 primes using a temporary crange generator:"); - c_forfilter (i, crange, crange_obj(n - 1, 0, -2), + crange range = crange_make(n - 1, 0, -2); + + c_forfilter (i, crange, range, cbits_test(&primes, *i.ref/2) && c_flt_take(i, 50) ){ |