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Good work. Thanks a lot.

Thank you, lutz. I transform "a" to float explicitly: (set 'af (map float a)) then, the LAPACK_dgels works well. "pack" looks like malloc or other allocate memory functions in C. It allocates continuous memory and assigns value of some type (float, int etc) to every position. This is so-called "pack...

I think "char" or "int" doesn't matter, when I change "int" to/from "char", the result is the same as before. And, when I do as you said, replace (address aptr) with aptr, strangely, the result doesn't change. But when I test C array API with my own function below, the result is good. Here is code: ...

I want to compute a matrix with lapacke. The example is here http://www.netlib.org/lapack/lapacke.html#_calling_tt_dgels_tt here is my code: (set 'LAPACKE "/usr/local/lib/liblapacke.so") (import LAPACKE "LAPACKE_dgels" "int" "int" "char" "int" "int" "int" "void*" "int" "void*" "int") (set 'a '(1 1 1...

thank you lutz, it does work.

I want to do some scientific computing with gsl. but encounter some error. below is my code > (import LIB "gsl_complex_rect" "void*" "double" "double") gsl_complex_rect@7FBAD0403FD0 > (unpack "lf lf" (gsl_complex_rect 2.0 3.0)) Segmentation fault (core dumped) the complex defined in gsl like this: t...