use %ndims instead of %rank to avoid possible confusion

Author: scivision

Examples.md

@@ -113,15 +113,15 @@ exists = h5exist("my.h5", "/foo")
 
 ## check variable shape, rank/ndims
 
-`h5f%rank == h5f%ndims` for convenience, both methods are equivalent.
+`h5f%ndims` we didn't use `%rank` to avoid confusion with intrinsic "rank()"
 
 ```fortran
 call h5f%initialize('test.h5', status='old',action='r')
 
 integer :: drank
 integer(hsize_t), allocatable :: dims(:)
 
-drank = h5f%rank('/foo')
+drank = h5f%ndims('/foo')
 call h5f%shape('/foo',dims)
 
 if (drank /= size(dims)) error stop

src/interface.f90

@@ -24,6 +24,7 @@ module h5fortran
 
 !> Workaround for Intel 19.1 / 2020 bug with /stand:f18
 !> error #6410: This name has not been declared as an array or a function.   [RANK]
+!> GCC 10.2.0 generates spurious Wsurprising from having this here.
 intrinsic :: rank
 
 !> main type
@@ -48,7 +49,7 @@ module h5fortran
 procedure, public :: initialize => hdf_initialize, finalize => hdf_finalize, &
   write_group, writeattr, &
   open => hdf_open_group, close => hdf_close_group, flush => hdf_flush, &
-  rank => hdf_get_ndims, ndims => hdf_get_ndims, &
+  ndims => hdf_get_ndims, &
   shape => hdf_get_shape, layout => hdf_get_layout, chunks => hdf_get_chunk, &
   exist => hdf_check_exist, exists => hdf_check_exist, &
   is_contig => hdf_is_contig, is_chunked => hdf_is_chunked