Function ion_c_sys::_ion_decimal_from_string_helper

pub unsafe extern "C" fn _ion_decimal_from_string_helper(
    str_: *const c_char, 
    context: *mut decContext, 
    owner: hOWNER, 
    p_quad: *mut decQuad, 
    p_num: *mut *mut decNumber
) -> iERR