c('PL_is_variable')

12.4.4.1 Testing the type of a term

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Documentation
- Reference manual
  - Foreign Language Interface
    - The Foreign Include File
      - Analysing Terms via the Foreign Interface
        
        Testing the type of a term
        
        PL_term_type()
        
        PL_is_variable()
        
        PL_is_ground()
        
        PL_is_atom()
        
        PL_is_string()
        
        PL_is_integer()
        
        PL_is_rational()
        
        PL_is_float()
        
        PL_is_callable()
        
        PL_is_compound()
        
        PL_is_functor()
        
        PL_is_list()
        
        PL_is_pair()
        
        PL_is_dict()
        
        PL_is_atomic()
        
        PL_is_number()
        
        PL_is_acyclic()
- Packages

Availability:C-language interface function

int PL_is_variable(term_t)

Returns non-zero if term is a variable.