From 395372461752a28ff8d9fff14a2fa8b254fe7974 Mon Sep 17 00:00:00 2001
From: Dave Abrahams <dave@boostpro.com>
Date: Tue, 17 Oct 2000 23:35:58 +0000
Subject: [PATCH] Drop requirement for <limits>

[SVN r7982]
---
 py.cpp | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/py.cpp b/py.cpp
index a64e27c5..9ac2490d 100644
--- a/py.cpp
+++ b/py.cpp
@@ -7,7 +7,11 @@
 //  producing this work.
 
 #include "py.h"
-#include <boost/cast.hpp>
+#include <boost/config.hpp>
+#include <typeinfo>
+#ifndef BOOST_NO_LIMITS
+# include <boost/cast.hpp>
+#endif
 
 namespace py {
 
@@ -82,11 +86,19 @@ T integer_from_python(PyObject* p, py::Type<T>)
 {
     const long long_result = from_python(p, py::Type<long>());
 
+#ifndef BOOST_NO_LIMITS
     try
     {
         return boost::numeric_cast<T>(long_result);
     }
     catch(const boost::bad_numeric_cast&)
+#else
+    if (static_cast<T>(long_result) == long_result)
+    {
+        return static_cast<T>(long_result);
+    }
+    else
+#endif
     {
         char buffer[256];
         const char message[] = "%ld out of range for %s";
@@ -103,12 +115,17 @@ template <class T>
 PyObject* integer_to_python(T value)
 {
     long value_as_long;
-    
+
+#ifndef BOOST_NO_LIMITS
     try
     {
-        value_as_long = boost::numeric_cast<T>(value);
+        value_as_long = boost::numeric_cast<long>(value);
     }
     catch(const boost::bad_numeric_cast&)
+#else
+    value_as_long = static_cast<long>(value);
+    if (value_as_long != value)
+#endif
     {
         const char message[] = "value out of range for Python int";
         PyErr_SetString(PyExc_ValueError, message);