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-rw-r--r--zlib/compress.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/zlib/compress.c b/zlib/compress.c
index 6777fd1b68b..4e035d0322f 100644
--- a/zlib/compress.c
+++ b/zlib/compress.c
@@ -1,10 +1,11 @@
/* compress.c -- compress a memory buffer
* Copyright (C) 1995-2002 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
+ * For conditions of distribution and use, see copyright notice in zlib.h
*/
/* @(#) $Id: compress.c,v 1.1.1.2 2002/03/11 21:53:23 tromey Exp $ */
+#define ZLIB_INTERNAL
#include "zlib.h"
/* ===========================================================================
@@ -66,3 +67,13 @@ int ZEXPORT compress (dest, destLen, source, sourceLen)
{
return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);
}
+
+/* ===========================================================================
+ If the default memLevel or windowBits for deflateInit() is changed, then
+ this function needs to be updated.
+ */
+uLong ZEXPORT compressBound (sourceLen)
+ uLong sourceLen;
+{
+ return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) + 11;
+}