Merge pull request #737 from ddemidov/osx-size_t

size_t and ptrdiff_t need special treatment on OSX

Author: jszuppe

include/boost/compute/types.hpp

@@ -20,5 +20,6 @@
 #include <boost/compute/types/pair.hpp>
 #include <boost/compute/types/struct.hpp>
 #include <boost/compute/types/tuple.hpp>
+#include <boost/compute/types/size_t.hpp>
 
 #endif // BOOST_COMPUTE_TYPES_HPP

include/boost/compute/types/size_t.hpp

@@ -0,0 +1,60 @@
+//---------------------------------------------------------------------------//
+// Copyright (c) 2017 Denis Demidov <[email protected]>
+//
+// Distributed under the Boost Software License, Version 1.0
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+//
+// See http://boostorg.github.com/compute for more information.
+//---------------------------------------------------------------------------//
+
+// size_t and ptrdiff_t need special treatment on OSX since those are not
+// typedefs for ulong and long here:
+#if defined(__APPLE__) && !defined(BOOST_COMPUTE_TYPES_SIZE_T_HPP)
+#define BOOST_COMPUTE_TYPES_SIZE_T_HPP
+
+#include <sstream>
+
+#include <boost/mpl/if.hpp>
+
+#include <boost/compute/type_traits/is_fundamental.hpp>
+#include <boost/compute/type_traits/type_name.hpp>
+#include <boost/compute/detail/meta_kernel.hpp>
+
+namespace boost {
+namespace compute {
+
+template <> struct is_fundamental<size_t>    : boost::true_type {};
+template <> struct is_fundamental<ptrdiff_t> : boost::true_type {};
+
+namespace detail {
+
+template <> struct type_name_trait<size_t>
+    : type_name_trait<
+        boost::mpl::if_c<sizeof(size_t) == sizeof(cl_uint), cl_uint, cl_ulong>::type
+        >
+{};
+
+template <> struct type_name_trait<ptrdiff_t>
+    : type_name_trait<
+        boost::mpl::if_c<sizeof(ptrdiff_t) == sizeof(cl_int), cl_int, cl_long>::type
+        >
+{};
+
+inline meta_kernel& operator<<(meta_kernel &k, size_t v) {
+    std::ostringstream s;
+    s << v;
+    return k << s.str();
+}
+
+inline meta_kernel& operator<<(meta_kernel &k, ptrdiff_t v) {
+    std::ostringstream s;
+    s << v;
+    return k << s.str();
+}
+
+} // end detail namespace
+} // end compute namespace
+} // end boost namespace
+
+#endif