datum_as_hexwkb datum_as_wkb OUT_DEFAULT_DECIMAL_DIGITS OUT_DOUBLE_BUFFER_SIZE OUT_MAX_BYTES_DOUBLE OUT_MAX_DIGITS OUT_MAX_DOUBLE OUT_MIN_DOUBLE

datum_as_hexwkb() char * datum_as_hexwkb ( Datum  value, meosType  type, uint8_t  variant, size_t *  size  ) Return the HexWKB representation of a datum value.