¡@
python Programming Glossary: math.isnanHow do you get the next value in the floating-point sequence? http://stackoverflow.com/questions/10420848/how-do-you-get-the-next-value-in-the-floating-point-sequence x # NaNs and positive infinity map to themselves. if math.isnan x or math.isinf x and x 0 return x # 0.0 and 0.0 both map to.. # This matches the implementation in decimal.Decimal if math.isnan x return x if math.isnan y return y if y x return y elif y x.. in decimal.Decimal if math.isnan x return x if math.isnan y return y if y x return y elif y x return next_up x else return..
Python: sort function breaks in the presence of nan http://stackoverflow.com/questions/4240050/python-sort-function-breaks-in-the-presence-of-nan answer sorted list_ key lambda x float ' inf' if math.isnan x else x I suspect it results in a performance hit compared..
How to check for NaN in python? http://stackoverflow.com/questions/944700/how-to-check-for-nan-in-python find it. python math share improve this question math.isnan Checks if the float x is a NaN not a number . NaNs are part..
Checking for NaN presence in a container http://stackoverflow.com/questions/9904699/checking-for-nan-presence-in-a-container and in such cases test for NaN membership separately using math.isnan . In addition other operations e.g. set intersection need to..
|