rolling_sum_bool

simd_kernels::kernels::window

Function rolling_sum_bool 

Source 
pub fn rolling_sum_bool(
    window: BooleanAVT<'_, ()>,
    subwindow: usize,
) -> IntegerArray<i32>
Expand description

Computes rolling sums over boolean data, counting true values within sliding windows.

Treats boolean values as integers (true=1, false=0) and applies sliding window summation to count true occurrences within each window position. Essential for constructing conditional aggregations and boolean pattern analysis.

§Parameters

  • window - Boolean array view with offset and length specifications
  • subwindow - Number of boolean values to consider in each sliding window

§Returns

Returns an IntegerArray<i32> containing:

  • Count of true values within each complete window
  • Zero for positions with incomplete windows
  • Null mask indicating window completeness and null contamination

§Examples

ⓘ
use minarrow::BooleanArray;
use simd_kernels::kernels::window::rolling_sum_bool;

let bools = BooleanArray::from_slice(&[true, false, true, true]);
let result = rolling_sum_bool((&bools, 0, bools.len()), 2);