From 2ae3f472c175fd49f1bd954cf92a001e37897a27 Mon Sep 17 00:00:00 2001
From: Daniel James <daniel@calamity.org.uk>
Date: Fri, 24 Aug 2007 01:11:33 +0000
Subject: [PATCH] Remove the errno check when hashing floating point numbers.
 It's not really needed and was causing problems on the Microsoft Windows
 Smarthone Edition platform. Fixes #1064.

[SVN r38877]
---
 include/boost/functional/detail/hash_float.hpp | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/include/boost/functional/detail/hash_float.hpp b/include/boost/functional/detail/hash_float.hpp
index 62ded55..b85d15f 100644
--- a/include/boost/functional/detail/hash_float.hpp
+++ b/include/boost/functional/detail/hash_float.hpp
@@ -17,7 +17,6 @@
 #include <boost/functional/detail/float_functions.hpp>
 #include <boost/limits.hpp>
 #include <boost/assert.hpp>
-#include <errno.h>
 
 // Don't use fpclassify or _fpclass for stlport.
 #if !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION)
@@ -48,9 +47,7 @@ namespace boost
         inline std::size_t float_hash_impl(T v)
         {
             int exp = 0;
-            errno = 0;
             v = boost::hash_detail::call_frexp(v, &exp);
-            if(errno) return 0;
 
             std::size_t seed = 0;