[PATCH] Add getSwappedBytes implementations for float / double

[Matt Arsenault]

On 01/12/2015 09:52 AM, Mehdi AMINI wrote:
> Why are you using a memcpy for the implementation?
> You may have a good reason, but since it is not obvious to me it may deserve a comment so it won't get remove in the future.
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> http://reviews.llvm.org/D6730
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Because FloatToBits / DoubleToBits are in MathExtras.h which forms a 
circular dependency with this header, and I believe the normal store 
float to union and load integer is undefined behavior. The memcpy I 
think avoids it