1 files changed, 10 insertions, 0 deletions

diff --git a/compress.c b/compress.c
index 814bd9d..f10e234 100644
--- a/compress.c
+++ b/compress.c
@@ -66,3 +66,13 @@ 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;
+}