check that the version of __sync_sub_and_fetch that returns a value is supported...

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

diff --git a/src/zlib/compress.c b/src/zlib/compress.c
index 87c87c239c88d031ab475306b0a397155eceddb9..df04f0148e6d6a22ce0f5bc4e3eeeb7bb54ca605 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.
+ * Copyright (C) 1995-2003 Jean-loup Gailly.

  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
 /* @(#) $Id$ */
 
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
 /* @(#) $Id$ */
 

-#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


@@ -18,16 +19,12 @@
    memory, Z_BUF_ERROR if there was not enough room in the output buffer,
    Z_STREAM_ERROR if the level parameter is invalid.
 */
    memory, Z_BUF_ERROR if there was not enough room in the output buffer,
    Z_STREAM_ERROR if the level parameter is invalid.
 */

-#if defined(__VISAGECPP__) // Visual game can't handle this antiquated interface
-int ZEXPORT compress2 (Bytef* dest, uLongf* destLen, const Bytef* source, uLong sourceLen, int level)
-#else

 int ZEXPORT compress2 (dest, destLen, source, sourceLen, level)
     Bytef *dest;
     uLongf *destLen;
     const Bytef *source;
     uLong sourceLen;
     int level;
 int ZEXPORT compress2 (dest, destLen, source, sourceLen, level)
     Bytef *dest;
     uLongf *destLen;
     const Bytef *source;
     uLong sourceLen;
     int level;

-#endif

 {
     z_stream stream;
     int err;
 {
     z_stream stream;
     int err;


@@ -62,15 +59,21 @@ int ZEXPORT compress2 (dest, destLen, source, sourceLen, level)
 
 /* ===========================================================================
  */
 
 /* ===========================================================================
  */

-#if defined(__VISAGECPP__) // Visual game can't handle this antiquated interface
-int ZEXPORT compress (Bytef* dest, uLongf* destLen, const Bytef* source, uLong sourceLen)
-#else

 int ZEXPORT compress (dest, destLen, source, sourceLen)
     Bytef *dest;
     uLongf *destLen;
     const Bytef *source;
     uLong sourceLen;
 int ZEXPORT compress (dest, destLen, source, sourceLen)
     Bytef *dest;
     uLongf *destLen;
     const Bytef *source;
     uLong sourceLen;

-#endif

 {
     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;
+}