cpp-io2d / io2dts

The P0267 proposal drafts
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Add __has_unmanaged_output_surface feature test macro #179

Open mikebmcl opened 5 years ago

mikebmcl commented 5 years ago

Provides a quick, easy way to determine with the preprocessor whether or not the implementation decided to provide a basic_unmanaged_output_surface implementation, since it is optional.