Function pamoja_window_with_capacity 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn pamoja_window_with_capacity(
    capacity: usize,
) -> *mut PamojaWindow

Creates an empty rolling window that keeps up to capacity readings.

Returns

A handle the caller must release with pamoja_window_free, or null if capacity is not from 1 to PAMOJA_WINDOW_CAPACITY.

Safety

A returned handle must be freed exactly once.