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Re: Typep problem on array dimensions?
- To: email@example.com (Mark Westling)
- Subject: Re: Typep problem on array dimensions?
- From: firstname.lastname@example.org (Bill St. Clair)
- Date: Fri, 11 Sep 1992 15:38:50 -0500
- Cc: info-mcl
>I create an array like this:
>(setq ar (make-array '(4 4)
> :element-type 'double-float
> :initial-element 0.0))
>and, as expected,
> (type-of ar)
> --> (simple-array double-float (4 4)).
>But here's what I get when I try a typep:
> (typep ar '(simple-array double-float (4 4)))
> --> nil
>At first I thought this was a type discrimination problem,
>but MCL 2.0 stores double-floats as double-floats; and then
> (typep ar '(simple-array double-float (* *)))
> --> t
Bug in TYPEP. Has probably been there at least since 2.0b1. I guess
nobody has ever specified the dimensions of an array to TYPEP.
I have prepared a patch for inclusion in patch 2 for MCL 2.0. I'll
mail it to anyone who asks for "typep-of-array-patch".