add_date_int add_interval_interval add_timestamptz_interval bool_in bool_out cstring2text date_in date_out date_to_timestamp date_to_timestamptz float_exp float_ln float_log10 float_round interval_cmp interval_in interval_make interval_out minus_date_date minus_date_int minus_timestamptz_interval minus_timestamptz_timestamptz mul_interval_double text2cstring text_cmp text_copy text_initcap text_lower text_out text_upper textcat_text_text time_in time_out timestamp_in timestamp_out timestamp_to_date timestamptz_in timestamptz_out timestamptz_shift timestamptz_to_date

bool_in() bool bool_in ( const char *  str ) Return a boolean from its string representation. Parameters [in] str String Convert "t" or "f" to 1 or 0. Check explicitly for "true/false" and TRUE/FALSE, 1/0, YES/NO, ON/OFF and reject other values. In the switch statement, check the most-used possibilities first. Note PostgreSQL function: boolin(PG_FUNCTION_ARGS)