PlTerm can be casted to the following types:
- PlTerm ::operator term_t(void)
- This cast is used for integration with the C-interface primitives.
- PlTerm ::operator long(void)
- Yields a
longif the PlTerm is a Prolog integer or float that can be converted without loss to a long. throws a
- PlTerm ::operator int(void)
- Same as for
long, but might represent fewer bits.
- PlTerm ::operator double(void)
- Yields the value as a C double if PlTerm represents a Prolog integer or float.
- PlTerm ::operator wchar_t *(void)
- PlTerm ::operator char *(void)
- Converts the Prolog argument using PL_get_chars() using the flags
CVT_ALL|CVT_WRITE|BUF_RING, which implies Prolog atoms and strings are converted to the represented text. All other data is handed to write/1. If the text is static in Prolog, a direct pointer to the string is returned. Otherwise the text is saved in a ring of 16 buffers and must be copied to avoid overwriting.
- PlTerm ::operator void *(void)
- Extracts pointer value from a term. The term should have been created by PlTerm::PlTerm(void*).