Update patch set 1
Patch Set 1: Chris, James, Actually bash is pretty basic and is unable to do floating point arithmetic, hence the original call to python. Something like $(( 1.1 - 0.2 )) will trigger a syntax error. The page at http://math-blog.com/2012/07/23/floating-point-arithmetic-in-the-bourne-again-shell-bash/ lists a few alternatives (all involving shelling out). I chose perl because it is available be default on most systems. Patch-set: 1 Label: Verified=0
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