--- libecb/ecb.pod	2011/05/26 21:18:52	1.11
+++ libecb/ecb.pod	2011/05/26 22:14:52	1.13
@@ -236,8 +236,8 @@
 common use case is to compute the integer binary logarithm, i.e.,
 floor(log2(n)). For example:
 
-  ecb_ctz32(3) = 1
-  ecb_ctz32(6) = 2
+  ecb_ctz32(3) = 0
+  ecb_ctz32(6) = 1
 
 =item int ecb_popcount32 (uint32_t x)
 
@@ -250,6 +250,9 @@
 
 =item uint32_t ecb_bswap32 (uint32_t x)
 
+These two functions return the value of the 16-bit (32-bit) variable
+C<x> after reversing the order of bytes.
+
 =item uint32_t ecb_rotr32 (uint32_t x, unsigned int count)
 
 =item uint32_t ecb_rotl32 (uint32_t x, unsigned int count)
@@ -276,6 +279,14 @@
 
 =item element_count = ecb_array_length (name) [MACRO]
 
+Returns the number of elements in the array C<name>. For example:
+
+  int primes[] = { 2, 3, 5, 7, 11 };
+  int sum = 0;
+
+  for (i = 0; i < ecb_array_length (primes); i++)
+    sum += primes [i];
+
 =back