[FFmpeg-devel] [PATCH v1] lavfi: add nlmeans CUDA filter

[Dylan Fernando]

On Sat, Aug 14, 2021 at 9:11 AM Timo Rothenpieler <timo at rothenpieler.org>
wrote:

> On 13.08.2021 10:42, Dylan Fernando wrote:
> > Any update on this?
> >
> > Kind Regards,
> > Dylan
>
> Also, are you sure that exp() function is correct?
>
> The CUDA-Function exp() is defined as "double exp(double x)" and
> calculates the base e exponential.
>
> While __nvvm_ex2_approx_f reads to me like it does so for floats, and
> for base 2. For which the CUDA equivalent would be "float exp2f(float)".
>
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I wasn't sure about the exp() function. Is there a function like
__nvvm_exp_approx_d? I can't seem to find a function for this.