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From: Nala Ginrut <nalaginrut@gmail.com>
To: Tim Meehan <btmeehan@gmail.com>
Cc: guile-user <guile-user@gnu.org>
Subject: Re: C extensions
Date: Sun, 21 Feb 2021 12:10:23 +0800	[thread overview]
Message-ID: <CAPjoZocofyPTqntHax49pe+H-yPNW_+rNC6pwnJd37T18vd2OQ@mail.gmail.com> (raw)
In-Reply-To: <CACgrOxKeVr5TBH3NfyyPwQu9995prtFB48YTYGTWOgYifQiC4A@mail.gmail.com>

Hi Tim!
I think you may try these functions:
scm_is_true
scm_is_real_p
scm_geq_p

Best regards.


On Sun, Feb 21, 2021 at 11:57 AM Tim Meehan <btmeehan@gmail.com> wrote:

> I'm trying my hand a writing C extensions.
> I've done this for stuff like Matlab before, and was wondering how you do
> the usual checking of the arguments that are passed in from Guile.
>
> In the manual, 6.13.13.1 "C Support" has a few functions.
> libguile/numbers.h has a bunch more ...
>
> What I have is an extension function, sort of like the bessel function in
> the tutorial:
>
> https://www.gnu.org/software/guile/manual/html_node/A-Sample-Guile-Extension.html
>
> What I would like to do is verify that the first argument is an inexact
> number, larger than 0. How would I go about that? Perhaps some of it could
> be:
> SCM_REALP
> scm_misc_error
>
> Any tips?
>


  reply	other threads:[~2021-02-21  4:10 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-21  3:56 C extensions Tim Meehan
2021-02-21  4:10 ` Nala Ginrut [this message]
2021-02-21 16:00 ` Olivier Dion via General Guile related discussions
2021-02-21 21:58   ` Tim Meehan
2021-02-21 22:18     ` Tim Meehan
2021-02-21 22:41     ` Olivier Dion via General Guile related discussions

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