Add comments explaining the workaround for mingw 3.2.3

[wxWidgets.git] / src / zlib / compress.c

diff --git a/src/zlib/compress.c b/src/zlib/compress.c
index 51761b105e2f2d3c6962f8034d37c47c8390c8a0..24ef0291911008ce25f30e29dcb0cd8512aedb5b 100644 (file)
--- a/src/zlib/compress.c
+++ b/src/zlib/compress.c
@@ -1,11 +1,12 @@
 /* compress.c -- compress a memory buffer
 /* compress.c -- compress a memory buffer

- * Copyright (C) 1995-1998 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h 
+ * Copyright (C) 1995-2002 Jean-loup Gailly.
+ * For conditions of distribution and use, see copyright notice in zlib.h

  */
 
 /* @(#) $Id$ */
 
  */
 
 /* @(#) $Id$ */
 

-#include "../zlib/zlib.h"
+#define ZLIB_INTERNAL
+#include "zlib.h"

 
 /* ===========================================================================
      Compresses the source buffer into the destination buffer. The level
 
 /* ===========================================================================
      Compresses the source buffer into the destination buffer. The level


@@ -66,3 +67,13 @@ int ZEXPORT compress (dest, destLen, source, sourceLen)
 {
     return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);
 }
 {
     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;
+}