Subject: Re: [boost] Boost SIMD beta release
From: Domagoj Saric (dsaritz_at_[hidden])
Date: 2012-12-24 10:56:29
"Mathias Gaunard" wrote in message news:50D2F8D1.2030900_at_ens-lyon.org...
> While this works, if you do this you won't be able to use lazy branch
> evaluation in the scalar version.
> If you write
> c = if_else(a != 0, b/a, b);
> this is equivalent in scalar to
> c = (a != 0) ? b/a : b;
> except that in the case above you will always compute the division.
As mentinoned here https://github.com/MetaScale/nt2/issues/379, it should be
(re)considered whether this scalar-if special handling actually brings any
benefit (or it might actually even be a pessimization in the majority of
-- "What Huxley teaches is that in the age of advanced technology, spiritual devastation is more likely to come from an enemy with a smiling face than from one whose countenance exudes suspicion and hate." Neil Postman
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