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Drop requirement for <limits>

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[SVN r7982]
This commit is contained in:
Dave Abrahams
2000-10-17 23:35:58 +00:00
parent 242862037d
commit 3953724617
1 changed files with 20 additions and 3 deletions
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23
py.cpp
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@@ -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);