Function arduino_esp::_dtoa_r

pub unsafe extern "C" fn _dtoa_r(
    arg1: *mut _reent, 
    arg2: f64, 
    arg3: c_int, 
    arg4: c_int, 
    arg5: *mut c_int, 
    arg6: *mut c_int, 
    arg7: *mut *mut c_char
) -> *mut c_char