pub unsafe extern "C" fn worksheet_write_dynamic_formula(
worksheet: *mut lxw_worksheet,
row: lxw_row_t,
col: lxw_col_t,
formula: *const c_char,
format: *mut lxw_format
) -> lxw_error
pub unsafe extern "C" fn worksheet_write_dynamic_formula(
worksheet: *mut lxw_worksheet,
row: lxw_row_t,
col: lxw_col_t,
formula: *const c_char,
format: *mut lxw_format
) -> lxw_error