From e011d8c164402cbb1baf92533dfb4f933ec08fee Mon Sep 17 00:00:00 2001
From: Mark Adler <madler@alumni.caltech.edu>
Date: Mon, 1 Jul 2024 19:24:01 -0500
Subject: Add deflateUsed() function to get the used bits in the last byte.

This returns the number of used bits in the last byte of a stream
that has just been compressed with deflate.
---
 deflate.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'deflate.h')

diff --git a/deflate.h b/deflate.h
index 300c6ad..4884a4b 100644
--- a/deflate.h
+++ b/deflate.h
@@ -271,6 +271,9 @@ typedef struct internal_state {
     /* Number of valid bits in bi_buf.  All bits above the last valid bit
      * are always zero.
      */
+    int bi_used;
+    /* Last number of used bits when going to a byte boundary.
+     */
 
     ulg high_water;
     /* High water mark offset in window for initialized bytes -- bytes above
-- 
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