Some docs.

2 files changed, 13 insertions, 9 deletions

diff --git a/docs/ccommon_api.md b/docs/ccommon_api.md
index 9e1d1767..cb2e9226 100644
--- a/docs/ccommon_api.md
+++ b/docs/ccommon_api.md
@@ -24,12 +24,16 @@ c_foreach (i, cvec_x, vec) sum += *i.ref;
 ```
 
 #### c_forrange
-Declare an iterator and specify a range to iterate with a for loop. 
-- c_forrange (end)
-- c_forrange (it, end)
-- c_forrange (it, IterType, end)
-- c_forrange (it, IterType, begin, end)
-- c_forrange (it, IterType, begin, end, step)
+Declare an iterator and specify a range to iterate with a for loop. Like python's ***range()*** function:
+- c_forrange (stop)                              #  for _ in range(stop):
+- c_forrange (i, stop)  // IterType=size_t       #  for i in range(stop):
+- c_forrange (i, IterType, stop)                 #  for i in range(stop):
+- c_forrange (i, IterType, start, stop)          #  for i in range(start, stop):
+- c_forrange (i, IterType, start, stop, step)    #  for i in range(start, stop, step):
+```
+c_forrange (i, int, -3, 3) printf(" %d", i);
+// -3 -2 -1 0 1 2
+```
 
 #### c_withbuffer
 
diff --git a/examples/cbits_prime.c b/examples/cbits_prime.c
index 5c5d3969..e2e7877a 100644
--- a/examples/cbits_prime.c
+++ b/examples/cbits_prime.c
@@ -16,17 +16,17 @@ static inline cbits sieveOfEratosthenes(size_t n)
         }

     }

     return primes;

-} 

+}

 

 

 int main(void)

 {

     int n = 100000000;

     printf("computing prime numbers up to %u\n", n);

-    

+

     cbits primes = sieveOfEratosthenes(n);

     puts("done");

-    

+

     size_t np = cbits_count(primes);

     printf("number of primes: %zu\n", np);