From 655a1730fe2a77c7ce04cd8e36832bf3bd394919 Mon Sep 17 00:00:00 2001
From: James Larcombe <jlarcombe@sibelius.com>
Date: Tue, 20 Apr 2010 12:54:06 +0100
Subject: [PATCH] Reorganised double stream out operator in QDataStream to avoid causing unnecessary floating point exceptions.

---
 src/corelib/io/qdatastream.cpp |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/corelib/io/qdatastream.cpp b/src/corelib/io/qdatastream.cpp
index 2731ae1..3a9d284 100644
--- a/src/corelib/io/qdatastream.cpp
+++ b/src/corelib/io/qdatastream.cpp
@@ -1144,16 +1144,17 @@ QDataStream &QDataStream::operator<<(double f)
 
     CHECK_STREAM_PRECOND(*this)
 #ifndef Q_DOUBLE_FORMAT
-    if (!noswap) {
+    if (noswap) {
+        dev->write((char *)&f, sizeof(double));
+    } else {
         union {
             double val1;
             quint64 val2;
         } x;
         x.val1 = f;
         x.val2 = qbswap(x.val2);
-        f = x.val1;
+        dev->write((char *)&x.val2, sizeof(double));
     }
-    dev->write((char *)&f, sizeof(double));
 #else
     union {
         double val1;
-- 
1.7.0.2.msysgit.0