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-rw-r--r--libavutil/rc4.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/libavutil/rc4.h b/libavutil/rc4.h
index f6d2d44504..38ae52f298 100644
--- a/libavutil/rc4.h
+++ b/libavutil/rc4.h
@@ -49,6 +49,7 @@ AVRC4 *av_rc4_alloc(void);
*
* @param key_bits must be a multiple of 8
* @param decrypt 0 for encryption, 1 for decryption, currently has no effect
+ * @return zero on success, negative value otherwise
*/
int av_rc4_init(struct AVRC4 *d, const uint8_t *key, int key_bits, int decrypt);