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Glas :Re: [glas] norms and inner products for vectors of matrices |
From: Karl Meerbergen (Karl.Meerbergen_at_[hidden])
Date: 2006-01-18 07:57:27
Can we conclude that
1) 'Nested' collections are supported in containers and views (matrix
row, column, etc) only, but not in computational algorithms?
2) Those who want to use vector<vector<T>> etc in computations have to
implement their own.
3) GLAS should be relatively easy to extend, i.e. it should be possible
to write
glas::norm_1(v), where norm_1 is dispatched to a user defined function.
Karl
Wolfgang Bangerth wrote:
>>How should trans(v)*w be interpreted?
>>* result is a vector<double> which is the sum: sum_i v[i]*w[i] ?
>>* result is a vector<double> with element i being: trans(v)*w[i] ?
>>
>>
>
>I don't think there is a universal interpretation of what that expression
>should mean, so simply don't implement it. If someone wants to attach a
>particular meaning to it, they can always overload operators in their
>application programs.
>
>W.
>
>-------------------------------------------------------------------------
>Wolfgang Bangerth email: bangerth_at_[hidden]
> www: http://www.math.tamu.edu/~bangerth/
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