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Re: Accessing multiple values from C
From: |
Mark H Weaver |
Subject: |
Re: Accessing multiple values from C |
Date: |
Wed, 18 Jan 2012 16:47:21 -0500 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.0.92 (gnu/linux) |
I think something along these lines be ideal,
though this code is UNTESTED.
Mark
SCM
scm_c_value_ref (SCM obj, size_t idx)
{
if (SCM_VALUESP (obj))
{
SCM values = scm_struct_ref (obj, SCM_INUM0);
size_t i = idx;
while (SCM_LIKELY (!scm_is_null (values)))
{
if (i == 0)
return SCM_CAR (values);
values = SCM_CDR (values);
i--;
}
}
else if (idx == 0)
return obj;
scm_error (scm_out_of_range_key,
"scm_c_value_ref",
"Too few values in ~S to access index ~S",
scm_list_2 (obj, scm_from_unsigned_integer (idx)),
scm_list_1 (scm_from_unsigned_integer (idx)));
}
- Re: Accessing multiple values from C, (continued)
- Re: Accessing multiple values from C, Julian Graham, 2012/01/09
- Re: Accessing multiple values from C, Julian Graham, 2012/01/11
- Re: Accessing multiple values from C, Mark H Weaver, 2012/01/17
- Re: Accessing multiple values from C, Andy Wingo, 2012/01/18
- Re: Accessing multiple values from C, Ludovic Courtès, 2012/01/18
- Re: Accessing multiple values from C, Julian Graham, 2012/01/18
- Re: Accessing multiple values from C, Mark H Weaver, 2012/01/18
- Re: Accessing multiple values from C, Ludovic Courtès, 2012/01/18
- Re: Accessing multiple values from C,
Mark H Weaver <=
- Re: Accessing multiple values from C, Mark H Weaver, 2012/01/18