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Subject: Re: [boost] [compute] Define user functions using lambda expressions
From: Kyle Lutz (kyle.r.lutz_at_[hidden])
Date: 20141222 17:51:30
On Mon, Dec 22, 2014 at 1:54 PM, AsbjÃ¸rn <lordcrc_at_[hidden]> wrote:
> Hi,
>
> I'm probably missing something obvious, but how would I go about making a
> custom function using a lambda expression? Say I want to declare some
> function "sqr" which returns "_1 * _1", and then use this in a transform()
> lambda expression, ie
>
> transform(..., 2.0 * sqr(_1)  3.0 * _1 + 5.0, ...);
>
> to evaluate 2x^2  3x + 5.
>
> If I try to use BOOST_COMPUTE_FUNCTION() I can't use the resulting function
> in a lambda expression it seems.
Unfortunately, calling userdefined functions from lambdaexpressions
is not currently supported. See issue #59 [1].
However, this is something I'd like to support, I just haven't had the
time to implement it yet.
kyle
[1] https://github.com/kylelutz/compute/issues/59
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