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From: Mark H Weaver <mhw@netris.org>
To: Stefan Israelsson Tampe <stefan.itampe@gmail.com>
Cc: 32644@debbugs.gnu.org
Subject: bug#32644: bytevector bug
Date: Thu, 06 Sep 2018 13:27:11 -0400	[thread overview]
Message-ID: <87a7ousfio.fsf@netris.org> (raw)
In-Reply-To: <CAGua6m3Gi3ySqTS5sVvBZTBGD=zMHXZrgYXkF0JenOaeB-20aQ@mail.gmail.com> (Stefan Israelsson Tampe's message of "Wed, 5 Sep 2018 19:53:02 +0200")

Stefan Israelsson Tampe <stefan.itampe@gmail.com> writes:

> The code velow does not compile when the define-inlinable of id is active. If in stead
> id defined by define is used it all compiles just fine.
>
> Tested on latest tar ball for guile 2.4

Did you mean to write guile 2.2.4?

      Mark


> -------------------------------------------
> (use-modules (rnrs bytevectors))
>
> (define-inlinable (id x) x)
> ;(define (id x) x)
> (define-syntax-rule (mkcrc crc_hqx high xor mask)
>   (define (crc_hqx data value)
>        (let ((n (bytevector-length data))
>      (d data))
> (let lp ((i 0) (v value))
>    (if (< i n)
>        (let ((b (id (bytevector-u8-ref d i))))
> (let lp2 ((j 0) (x 1) (v v))
>    (if (> j -8)
>        (let ((bit   (ash (logand x b) j))
>      (hbit  (logand v high)))
> (if (= hbit 0)
>      (lp2 (- j 1) (ash x 1) (logior bit (ash v 1)))
>      (lp2 (- j 1) (ash x 1) (logxor
>      xor
>      (logand mask
>      (logior
>       bit
>       (ash v 1)))))))
>        (lp (+ i 1) v))))
>        v)))))
>
> (mkcrc crc_hqx #x8000     #x1021     #xffff)
> (mkcrc crc32   #x80000000 #x04c11db7 #xffffffff)





  reply	other threads:[~2018-09-06 17:27 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-05 17:53 bug#32644: bytevector bug Stefan Israelsson Tampe
2018-09-06 17:27 ` Mark H Weaver [this message]
2018-09-14 18:44   ` Stefan Israelsson Tampe
2018-10-14  7:38 ` Mark H Weaver

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