Module simd_i64 

SIMD-style i64 operations for integer-typed arrays.

Provides vectorized accumulation patterns for i64 data, avoiding the cost of i64->f64 conversion and preserving integer type fidelity. Uses chunks-of-4 manual unrolling for compiler auto-vectorization.

Operations that are inherently floating-point (mean, correlation, std dev, pct_change) remain f64-only.

Functions

cumsum_i64

Cumulative sum over i64 data. Uses wrapping arithmetic.

diff_i64

First-difference over i64 data.

rolling_max_i64

Rolling maximum over i64 data using monotonic deque. O(n) amortized.

rolling_min_i64

Rolling minimum over i64 data using monotonic deque. O(n) amortized.

rolling_sum_i64

Rolling sum over i64 data with O(n) sliding window.

simd_max_i64

SIMD-style i64 maximum.

simd_min_i64

SIMD-style i64 minimum.

simd_sum_i64

SIMD-style i64 sum using 4-wide accumulator lanes.