diff options
Diffstat (limited to 'misc/examples/prime.c')
| -rw-r--r-- | misc/examples/prime.c | 35 |
1 files changed, 18 insertions, 17 deletions
diff --git a/misc/examples/prime.c b/misc/examples/prime.c index 59ee336c..d0887353 100644 --- a/misc/examples/prime.c +++ b/misc/examples/prime.c @@ -30,24 +30,25 @@ int main(void) printf("Computing prime numbers up to %" c_ZI "\n", n); clock_t t1 = clock(); - c_with (cbits primes = sieveOfEratosthenes(n + 1), cbits_drop(&primes)) { - int64_t np = cbits_count(&primes); - clock_t t2 = clock(); + cbits primes = sieveOfEratosthenes(n + 1); + int64_t np = cbits_count(&primes); + clock_t t2 = clock(); - printf("Number of primes: %" c_ZI ", 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) - if (cbits_test(&primes, i>>1)) printf(" %lld", i); - puts("\n"); + printf("Number of primes: %" c_ZI ", 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) + if (cbits_test(&primes, i>>1)) printf(" %lld", i); + puts("\n"); - puts("Show the last 50 primes using a temporary crange generator:"); - crange R = crange_make(n - 1, 0, -2); - c_forfilter (i, crange, R - , cbits_test(&primes, *i.ref>>1) - && c_flt_take(i, 50)) { - printf("%lld ", *i.ref); - if (c_flt_last(i) % 10 == 0) puts(""); - } + puts("Show the last 50 primes using a temporary crange generator:"); + c_forfilter (i, crange, crange_obj(n - 1, 0, -2), + cbits_test(&primes, *i.ref/2) && + c_flt_take(i, 50) + ){ + printf("%lld ", *i.ref); + if (c_flt_getcount(i) % 10 == 0) puts(""); } + + cbits_drop(&primes); } |