🚀 go-pugleaf

In article <1992Oct15.181252.1796@u.washington.edu> goldly@u.washington.edu (Lloyd P. Goldwasser) writes:
>I'm trying to make a dynamically-declared pointer pointer
>
>  float **x
>
>point to a pre-existing 2-d array
>
>  float x_init[][7]={ {1., 2., 3., ...}, {...}, {...} };
>

I believe the fundamental problem here is your misunderstanding of
2-d arrays vs. arrays of arrays (ptrs to ptrs).you've declared two things here, one
static array of constants, and one "pointer pointer".  While you can
refer to both of them as array[posx][posy], the static declaration is a
2-d array, which is NOT an array of pointers.  It is one pointer into a
chunk of memory which contains the following

First row
Second row
...
Nth row.

There's only one level of indirection here.  However, the float ** is
two levels of indirection.  

If you really want to do what you ask, you can't do it with a simple
assign.  What you would probably need to do is malloc space for the
primary array, and assign (in a loop of some sort) each secondary
pointer to point at &x_init[i]
-- 
Sean T. Lamont                           |   "Don't oppress me, It's
zeno@genetics.washington.edu             |    'computer of color!' "
lamont@abstractsoft.com                  |_______________________________
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