diff -r 52e49533e7b4 -r 61d5197d612b src/cx/buffer.h
--- a/src/cx/buffer.h	Mon Dec 18 14:25:10 2023 +0100
+++ b/src/cx/buffer.h	Mon Dec 18 15:13:26 2023 +0100
@@ -311,13 +311,27 @@
  * Clears the buffer by resetting the position and deleting the data.
  *
  * The data is deleted by zeroing it with a call to memset().
+ * If you do not need that, you can use the faster cxBufferReset().
  *
  * @param buffer the buffer to be cleared
+ * @see cxBufferReset()
  */
 __attribute__((__nonnull__))
 void cxBufferClear(CxBuffer *buffer);
 
 /**
+ * Resets the buffer by resetting the position and size to zero.
+ *
+ * The data in the buffer is not deleted. If you need a safe
+ * reset of the buffer, use cxBufferClear().
+ *
+ * @param buffer the buffer to be cleared
+ * @see cxBufferClear()
+ */
+__attribute__((__nonnull__))
+void cxBufferReset(CxBuffer *buffer);
+
+/**
  * Tests, if the buffer position has exceeded the buffer size.
  *
  * @param buffer the buffer to test