** =qmckl.h= header file

   The =qmckl.h= header file has to be included in <<<C>>> codes when
   QMCkl functions are used:

   #+BEGIN_SRC C  :tangle none
   #include "qmckl.h"
   #+END_SRC f90 


   In <<<Fortran>>> programs, the =qmckl_f.f90= interface file should be
   included in the source code using the library, and the Fortran codes
   should use the ~qmckl~ module as

   #+BEGIN_SRC f90  :tangle none
   use qmckl
   #+END_SRC f90 

*** Top of header files                                            :noexport:
  
    #+BEGIN_SRC C :tangle qmckl.h :noweb yes
#ifndef QMCKL_H
#define QMCKL_H
#include <stdlib.h>
#include <stdint.h>

<<type-exit-code>>

    #+END_SRC

    #+BEGIN_SRC f90 :tangle qmckl_f.f90
module qmckl
  use, intrinsic :: iso_c_binding
    #+END_SRC

    The bottoms of the files are located in the [[qmckl_footer.org]] file.