# Should evaluating 1.0e-15 produce an Unhandled SIGILL

Since downloading Sage 5.0 evaluating 1.0e-15 produces an Unhandled SIGILL in the notebook on Mac OSX. Has the input format changed from what it was in 4.7?

Now it seems I have to type 1.0*10.0^-15 (a lot more characters!)

...or is this a bug?

```
sage: 10.0^-1
0.100000000000000
sage: 1.0e-1
------------------------------------------------------------------------
Unhandled SIGILL: An illegal instruction occurred in Sage.
This probably occurred because a *compiled* component of Sage has a bug
in it and is not properly wrapped with sig_on(), sig_off(). You might
want to run Sage under gdb with 'sage -gdb' to debug this.
Sage will now terminate.
------------------------------------------------------------------------
```