Function std::intrinsics::ptr_offset_from

pub unsafe extern "rust-intrinsic" fn ptr_offset_from<T>(
    ptr: *const T, 
    base: *const T
) -> isize

🔬 This is a nightly-only experimental API. (core_intrinsics)

有关详细信息，请参见 <*const T>::offset_from 的文档。