Macros disabling half-precision functionality - how to use them?

Accelerated Computing CUDA CUDA Programming and Performance
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  • I’m not aware of any documentation for them.
  • They appear to be associated with helping people to resolve clashes with other toolchains/stacks.
  • I don’t expect they are intended (or needed) for general usage.
  • You can always file a bug to request changes to CUDA documentation.