Kevin O'Connor ab54fcd443 stepcompress: Check for small negative numbers on sqrt() calls ...

It's theoretically possible for floating point truncation to cause a
math formula to return a small negative number instead of 0.  If
sqrt() is called on this small negative number it could cause a
crash.  Check for this case and return 0.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

2016-10-10 11:39:26 -04:00

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