Re: [OctDev] Re: sparse tests

[Andy A. <ad...@si...>]

On Sat, 13 Dec 2003, Paul Kienzle wrote:

> It would be a little more convincing if other operators didn't
> convert to full as necessary, like + and /.  I haven't checked
> functions like cos/sin though.

I didn't think + converted to full. "/" will, though. I didn't
think it was used enough to bother implementing.

All the advanced functions (sin/cos etc.) will convert to full.

For cos it doesn't make sense to have a sparse implementation
since cos(0)=1. ie. the matrix will become filled with ones.

For sin, sinh, tan, erf, abs, conj, floor, round, ceil, fix,
    tanh, sign, asin, asinh, atan, sqrt (any more?)
in which func(0)= 0, I could write a template that does
the function on each non-sparse element. Then we could define
sp_func for each, which could dispatch for sparse operands.

Is this worth the work?

Andy