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Implement atomic floats #2

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lorentey opened this issue Oct 1, 2020 · 0 comments
Open

Implement atomic floats #2

lorentey opened this issue Oct 1, 2020 · 0 comments
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enhancement New feature or request

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@lorentey
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lorentey commented Oct 1, 2020

Implement AtomicValue conformances for Float, Double and Float16. Requirements/constraints:

  • compareExchange must compare the underlying encoded bit patterns rather than performing actual floating point comparisons. (I.e., it must consider negative zero different from positive zero, it must consider a NaN value equal to itself, etc.)
  • We should provide as many direct operations as llvm/clang exposes. It would be nice to at least provide an atomic addition.
  • We probably don't need/want an AtomicFloatingPoint protocol.
@lorentey lorentey added the enhancement New feature or request label Oct 7, 2020
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