Function simd_mask 

pub fn simd_mask<T: MaskElement, const N: usize>(
    mask: &Bitmask,
    offset: usize,
    len: usize,
) -> Mask<T, N>

Creates a SIMD mask from a bitmask window for vectorised conditional operations.

Converts a contiguous section of a bitmask into a SIMD mask. The resulting mask can be used to selectively enable/disable SIMD lanes during computation, providing efficient support for sparse or conditional operations.

Type Parameters

• T: Mask element type implementing MaskElement (typically i8, i16, i32, or i64)
• N: Number of SIMD lanes, must match the SIMD vector width for the target operation

Parameters

• mask: Source bitmask containing validity information
• offset: Starting bit offset within the bitmask
• len: Maximum number of bits to consider (bounds checking)

Returns

A Mask<T, N> where each lane corresponds to the validity of the corresponding input element. Lanes beyond len are set to false for safety.

Usage Example

use simd_kernels::utils::simd_mask;

// Create 8-lane mask for conditional SIMD operations  
let mask: Mask<i32, 8> = simd_mask(&bitmask, 0, 64);
let result = simd_vector.select(mask, default_vector);