Name: H5Itype_exists
Signature:
  htri_t `H5Itype_exists`( H5I_type_t `type` )
Purpose:
  Determines whether an identifier type is registered.
Description:
  `H5Itype_exists` determines whether the given identifier type, `type`, is registered with the library.
Parameters:

H5I_type_t `type` | IN: Identifier type.

Returns:
  Returns `1` if the type is registered and `0` if not. Returns a negative value on failure.
Fortran90 Interface:
  None.
History:

Release | C
1.8.0 | Function introduced in this release.