Imported Upstream version 1.72.0

[platform/upstream/boost.git] / boost / gil / extension / io / raw / detail / is_allowed.hpp

diff --git a/boost/gil/extension/io/raw/detail/is_allowed.hpp b/boost/gil/extension/io/raw/detail/is_allowed.hpp
index be30b5d..88f2767 100644 (file)
--- a/boost/gil/extension/io/raw/detail/is_allowed.hpp
+++ b/boost/gil/extension/io/raw/detail/is_allowed.hpp
@@ -11,29 +11,31 @@
 #include <boost/gil/extension/io/raw/tags.hpp>
 #include <boost/gil/io/base.hpp>
 
+#include <type_traits>
+
 namespace boost { namespace gil { namespace detail {
 
 template< typename View >
 bool is_allowed( const image_read_info< raw_tag >& info
-               , mpl::true_   // is read_and_no_convert
+               , std::true_type   // is read_and_no_convert
                )
 {
     using pixel_t = typename get_pixel_type<View>::type;
     using num_channel_t = typename num_channels<pixel_t>::value_type;
     using channel_t = typename channel_traits<typename element_type<typename View::value_type>::type>::value_type;
 
-    const num_channel_t dst_samples_per_pixel = num_channels< pixel_t >::value;
-    const unsigned int  dst_bits_per_pixel    = detail::unsigned_integral_num_bits< channel_t >::value;
-    const bool          is_type_signed        = boost::is_signed< channel_t >::value;
+    constexpr num_channel_t dst_samples_per_pixel = num_channels<pixel_t>::value;
+    constexpr unsigned int dst_bits_per_pixel = detail::unsigned_integral_num_bits<channel_t>::value;
+    constexpr bool is_type_signed = std::is_signed<channel_t>::value;
 
-    return( dst_samples_per_pixel == info._samples_per_pixel &&
-            dst_bits_per_pixel    == static_cast<unsigned int>(info._bits_per_pixel) &&
-            !is_type_signed );
+    return (dst_samples_per_pixel == info._samples_per_pixel &&
+            dst_bits_per_pixel == static_cast<unsigned int>(info._bits_per_pixel) &&
+            !is_type_signed);
 }
 
 template< typename View >
 bool is_allowed( const image_read_info< raw_tag >& /* info */
-               , mpl::false_  // is read_and_convert
+               , std::false_type  // is read_and_convert
                )
 {
     return true;