Function nstd_sys::vec::nstd_vec_reserved

#[no_mangle]
pub const extern "C" fn nstd_vec_reserved(
    vec: &NSTDVec<'_>
) -> NSTDUInt

Available on crate feature vec only.

Returns the number of reserved elements within a vector’s inactive buffer.

Parameters:

• const NSTDVec *vec - The vector.

Returns

NSTDUInt reserved - The number of uninitialized elements within vec’s inactive buffer.

Example

use nstd_sys::{
    alloc::NSTD_ALLOCATOR,
    vec::{nstd_vec_new_with_cap, nstd_vec_reserved},
};

unsafe {
    let vec = nstd_vec_new_with_cap(&NSTD_ALLOCATOR, 2, 16).unwrap();
    assert!(nstd_vec_reserved(&vec) == 16);
}