Typos and doc additions
diff --git a/include/polarssl/ecp.h b/include/polarssl/ecp.h
index ef99351..094a840 100644
--- a/include/polarssl/ecp.h
+++ b/include/polarssl/ecp.h
@@ -412,7 +412,7 @@
*
* \note buf is updated to point right after the ECPoint on exit
*
- * \return O if successful,
+ * \return 0 if successful,
* POLARSSL_ERR_MPI_XXX if initialization failed
* POLARSSL_ERR_ECP_BAD_INPUT_DATA if input is invalid
*/
@@ -462,7 +462,7 @@
* \param grp Destination group
* \param index Index in the list of well-known domain parameters
*
- * \return O if successful,
+ * \return 0 if successful,
* POLARSSL_ERR_MPI_XXX if initialization failed
* POLARSSL_ERR_ECP_FEATURE_UNAVAILABLE for unkownn groups
*
@@ -480,7 +480,7 @@
*
* \note buf is updated to point right after ECParameters on exit
*
- * \return O if successful,
+ * \return 0 if successful,
* POLARSSL_ERR_MPI_XXX if initialization failed
* POLARSSL_ERR_ECP_BAD_INPUT_DATA if input is invalid
*/