NickFort:
I tried the external declaration. It compiles and runs but mrqmin fails to give results.
mikrom:
This is the exact text in the "Numerical Recipies" book:
SUBROUTINE mrqmin(x,y,sig,ndata,a,ia,ma,covar,alpha,nca,
* chisq,funcs,alamda)
INTEGER ma,nca,ndata,ia(ma),MMAX
REAL...