[J3] Why is += missing?

[Damian Rouson]

On Wed, Aug 25, 2021 at 6:27 AM Jeff Hammond via J3 <
j3 at mailman.j3-fortran.org> wrote:

> I will argue that it is syntactic sugar in the same sense that
> multidimensional arrays are.  Below is the perfectly functional C code I
> wrote to match my Fortran years ago (because computer scientists don’t know
> their history).  There is no actual need for multidimensional arrays in
> Fortran, just the practical difficulty of not having them.
>
>
>
> // t3(h3,h2,h1,p6,p5,p4)+=t1(p4,h1)*v2(h3,h2,p6,p5);
>
> t3[h3+h3u*(h2+h2u*(h1+h1u*(p6+p6u*(p5+p5u*p4))))] += t1[p4+p4u*h1] *
> v2[h3+h3u*(h2+h2u*(p6+p6u*p5))];
>

Jeff,

If I'm interpreting the responses accurately, it sounds like the idea
simply fell too far down the list of priorities, but I haven't heard any
fundamental resistance modulo syntax. Hopefully that's encouraging.

Is the provided C code really so short or were the nested for loops
omitted for the sake of brevity?

Damian


>
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