Module simd_ops 

SIMD-accelerated operations for spatial algorithms

This module provides high-performance SIMD implementations for critical spatial operations:

• Distance computations (Euclidean, Manhattan, Chebyshev, Minkowski, Cosine)
• KD-Tree operations (bounding box tests, point-to-box distance)
• Nearest neighbor search (batch distance, priority queues, radius search)

All operations use scirs2_core::simd::SimdUnifiedOps for optimal hardware utilization.

Architecture Support

The SIMD operations are automatically optimized based on available hardware:

• AVX-512 (8x f64 vectors)
• AVX2 (4x f64 vectors)
• ARM NEON (2x f64 vectors)
• SSE (2x f64 vectors - fallback)

Examples

use scirs2_spatial::simd_ops::{simd_euclidean_distance, simd_batch_distances};
use scirs2_core::ndarray::array;

// Single distance computation
let a = array![1.0, 2.0, 3.0];
let b = array![4.0, 5.0, 6.0];
let dist = simd_euclidean_distance(&a.view(), &b.view())?;

// Batch distance computation
let points1 = array![[1.0, 2.0], [3.0, 4.0]];
let points2 = array![[2.0, 3.0], [4.0, 5.0]];
let distances = simd_batch_distances(&points1.view(), &points2.view())?;

Functions

simd_batch_distances

SIMD-accelerated batch distance computation between point sets

simd_batch_squared_distances

SIMD-accelerated batch distance computation for KD-Tree queries

simd_box_box_intersection

SIMD-accelerated axis-aligned bounding box intersection test

simd_chebyshev_distance

SIMD-accelerated Chebyshev distance between two points

simd_cosine_distance

SIMD-accelerated Cosine distance between two points

simd_euclidean_distance

SIMD-accelerated Euclidean distance between two points

simd_knn_search

SIMD-accelerated k-nearest neighbors distance computation

simd_manhattan_distance

SIMD-accelerated Manhattan distance between two points

simd_minkowski_distance

SIMD-accelerated Minkowski distance between two points

simd_pairwise_distance_matrix

SIMD-accelerated pairwise distance matrix computation

simd_point_to_box_min_distance_squared

SIMD-accelerated point-to-axis-aligned-box minimum distance

simd_radius_search

SIMD-accelerated radius search

simd_squared_euclidean_distance

SIMD-accelerated squared Euclidean distance between two points