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

mul_interval_double() Interval * mul_interval_double ( const Interval *  interv, double  factor  ) Return the multiplication of an interval and a factor. Parameters [in] interv Interval [in] factor Factor Note PostgreSQL function: interval_mul(PG_FUNCTION_ARGS) taken from PG version 17.2