[Python-ideas] Why no sign function?

[Ram Rachum]

Robert Kern <robert.kern at ...> writes:

| That is what small utility functions are for.
| 
| Basically, there are number of different conventions a sign() function could 
| choose. In floating point, there are signed zeros and NaNs. Similarly, there
| no sign() function in the standard C math library, which the math module tries 
| to wrap thinly. Since there is an important ambiguity, the standard libraries 
| leave it to you to write your own small utility function which implements the 
| convention you desire.


That makes sense, now that you phrase it like that. Thanks Robert.

Ram.