Re: [Boost-users] converting to float128 from double

Subject: Re: [Boost-users] converting to float128 from double
From: John Maddock (jz.maddock_at_[hidden])
Date: 2016-05-03 12:06:47

On 03/05/2016 13:44, Cooper, Bridgette R D wrote:
>
> Hi,
>
>
> I have a function that takes as an argument a vector of doubles and 
> tries to convert it to a vector of float128.
>
>
> When I accumulate the values in the float128 vector it looks like it 
> does double additions and only casts up at the last step.
>
>
> The initial vector is defined as conststd::vector<double>
>
> The float128 vector is defined as std::vector<float128> epoint(num)
>
>
> And I try to do the casting (inside a loop) via: 
> epoint.at(i)=(float128(e8.at(i)));
>
>
> If I do the accumulation on the original vector with no casting into a 
> float128, I get the same as accumulating the vector that should be of 
> float128 type.
>
>
> How should I be doing the casting?
>

Sorry but you'll have to post way more code than that to see where the 
mistake is.

John.

>
> Thanks,
>
>
>
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