Floating-point differences between ARM processors
Floating-point differences between ARM processors
- Subject: Floating-point differences between ARM processors
- From: Rick Mann <email@hidden>
- Date: Fri, 04 Jan 2013 18:38:40 -0800
So, we've run into an issue in our physics simulation where the floating point results from cos() (and probably other intrinsics) are different between Apple ARM 5 and Apple ARM 6 processors. One person online said he solved the issue by implementing his own intrinsics, but I don't know how to do that and ensure I don't get the same issues.
I'm not sure how it can be justified, producing different results, for the sake of performance or battery life, but that seems to be the reason for the differences.
Does anyone know of available implementations, or a magic switch we can put in our code to make it behave identically on all platforms?
Thanks,
--
Rick
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