Don Cross 2c787eca8e Refined the problematic optimizations to -ffp-contract=off. ...

Instead of turning off all "expensive optimizations" in gcc,
I found I can achieve consistent calculation results on
64-bit ARM processors by turning off just the "fp contract"
optimization.

This optimizer is actually supposed to produce *more* accurate
results, but the effect is to produce results that differ
across languages/processors. For the sake of the unit tests,
I have decided it must be turned off in ctest and generate.

2020-07-22 21:30:51 +00:00

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