• Henry Weller's avatar
    Rationalize the "pos" function · ae277fd1
    Henry Weller authored and Andrew Heather's avatar Andrew Heather committed
    "pos" now returns 1 if the argument is greater than 0, otherwise it returns 0.
    This is consistent with the common mathematical definition of the "pos" function:
    
    https://en.wikipedia.org/wiki/Sign_(mathematics)
    
    However the previous implementation in which 1 was also returned for a 0
    argument is useful in many situations so the "pos0" has been added which returns
    1 if the argument is greater or equal to 0.  Additionally the "neg0" has been
    added which returns 1 if if the argument is less than or equal to 0.
    ae277fd1
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