Convert number to scientific notation

[fpicoral]

Is there a CAS function or something similar to convert a given number to scientific notation?

Obs: I tried changing the number format to scientific but it only converts to X*E^Y if there is a decimal point in X, i.e., it converts 100.0 to 1.0e^2 but not 100, beside the fact that I only want to use this in some specific situations, so a CAS function would be the best solution.

I tried creating this CAS program using Python but (at least with the PC emulator) it crashes when I try to use the function.

Code:

#cas
def base10(x):
 return "{:.2e}".format(x)
#end