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Hi I hava a problem with g77 and arrays
- From: Lars Segerlund <lars dot segerlund at comsys dot se>
- To: gcc-help at gcc dot gnu dot org
- Date: Wed, 18 Feb 2004 20:15:07 +0100
- Subject: Hi I hava a problem with g77 and arrays
I know a little about g77 and arrays by looking at g77 -S output, but I can't figure out why I cant allocate memory myself for a fortran array ? ( UGLY HACK IN PROGRESS ).
What I do is I declare an array of the desired rank in my main fortran program like
real a(1,1)
then call a c routine
c_mem_rank_2( a, 10, 10 )
( in the c code, void c_mem_rank_2(float *a,int *b,int *c); )
I then malloc( sizeof ( float*(*b)*(*c))) and assigns this to a. This looks great, now if I write data to a[] ( which is the way to look at it as far as I can read the gccint & g77 manual, a as a vector of length *b * *c ( 100 in this case )), it doesn't survive a return to the fortran prog.
I really don't understand what I am doing wrong, since I think I have done something similar in the past, I just dont remember how ....
Also if this doesn't work, I am thinking of using a character string instead, ( nicer passing of the arguments ), and an equivalence clause .. does anyone think this will do ?
All I want to do is allocate some memory the quick and dirty way :-(
/ regards, Lars Segerlund.