David Aurelio cb7a9b2057 Store YGFloatOptional in 32 bits
Summary:
@public

After removing `-ffast-math`, `NaN` can again be used to represent `undefined`. That allows us to remove the additional flag from `YGFloatOptional`, and reduce memory usage.

Reviewed By: SidharthGuglani

Differential Revision: D13209157

fbshipit-source-id: 21b83c837a78f924a4ec23a9236ca2440b3c8606
2018-12-06 07:38:43 -08:00
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2018-12-06 07:38:43 -08:00