Fixes issue #51

[mparlaktuna]

Signed-off-by: Mustafa Parlaktuna mparlaktuna@gmail.com
Fixes #51
0 was not counted during length calculation for arange. I added a calculate-range function to check the signs of start, stop and difference. Tested with the arange function calls inside example.lisp

[mparlaktuna]

By the way I had to remove file 5reduce to be able to compile locally. It crashes with
fatal error encountered in SBCL pid 7860(tid 0x7f7109b532c0): Heap exhausted, game over.
That might be the reason Travis CI is failing.

[guicho271828]

hi, thanks for the patch.

fatal error encountered in SBCL pid 7860(tid 0x7f7109b532c0): Heap exhausted, game over.

This is related to the default sbcl heap size. Give dynamic-space-size=8000 when you launch sbcl.

[guicho271828]

The patch does not seem to account for the cases where start/stop are floats or other number types.
this might be the cause of these regressions:
https://travis-ci.org/github/numcl/numcl/jobs/759123203#L444
https://travis-ci.org/github/numcl/numcl/jobs/759123202#L543

[guicho271828]

if it is fixed, then please consider making calculate-range inline.

[guicho271828]

another thing I can think of is to add failure cases to the tests.

[mparlaktuna]

Thanks for the suggestions. I think I got it fixed. What type of failure cases were you thinking about?

[mparlaktuna]

I started writing some tests and realized it is not fixed yet. I will continue working on it.