This creates a compiled function that is listable:
| Out[1]= |  |
It operates on a single input in normal fashion:
| Out[2]= |  |
When the arguments include a list that does not match the input specification, it threads the function over that argument:
| Out[3]= |  |
This compiled function is not listable:
| Out[4]= |  |
An error results when the argument specification does not match:
| Out[5]= |  |
If there is a branch, listability needs a function to be defined, as shown below using Function:
| Out[1]= |  |
A listable compiled function does the same thing much faster:
| Out[2]= |  |
A listable compiled function can run in parallel, giving an acceleration on multicore machines:
| Out[1]= |  |
