1 files changed, 11 insertions, 2 deletions
diff --git a/src/utils/rotate.h b/src/utils/rotate.h
index 5e3eef304..465746e0b 100644
--- a/src/utils/rotate.h
+++ b/src/utils/rotate.h
@@ -12,14 +12,23 @@
 
 namespace Botan {
 
-/*
-* Word Rotation Functions
+/**
+* Bit rotation left
+* @param input the input word
+* @param rot the number of bits to rotate
+* @return input rotated left by rot bits
 */
 template<typename T> inline T rotate_left(T input, size_t rot)
    {
    return static_cast<T>((input << rot) | (input >> (8*sizeof(T)-rot)));;
    }
 
+/**
+* Bit rotation right
+* @param input the input word
+* @param rot the number of bits to rotate
+* @return input rotated right by rot bits
+*/
 template<typename T> inline T rotate_right(T input, size_t rot)
    {
    return static_cast<T>((input >> rot) | (input << (8*sizeof(T)-rot)));