Name: H5open
Signature:
herr_t H5open(void)

Purpose:
Initializes the HDF5 library.

Description:
H5open initializes the library.

When the HDF5 Library is employed in a C application, this function is normally called automatically, but if you find that an HDF5 library function is failing inexplicably, try calling this function first. If you wish to eliminate this possibility, it is safe to routinely call H5open before an application starts working with the library as there are no damaging side-effects in calling it more than once.

When the HDF5 Library is employed in a Fortran90 application, h5open_f initializes global variables (e.g. predefined types) and performs other tasks required to initialize the library. h5open_f and h5close_f are therefore required calls in Fortran90 applications.

Parameters:
None.

Returns:
Returns a non-negative value if successful; otherwise returns a negative value.

Fortran90 Interface: h5open_f 
SUBROUTINE h5open_f(hdferr) 
  IMPLICIT NONE
  INTEGER, INTENT(OUT) :: hdferr      ! Error code

END SUBROUTINE h5open_f