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//! AVX-512 Native Shannon Entropy Calculation
//!
//! `keyhog` hunts for base64 cryptographic secrets by calculating Shannon Entropy.
//! Processing logarithmic equations looping per-byte over gigabytes of source code
//! mathematically halts the CPU pipeline inherently.
//!
//! Elite engineering processes Entropy via Hardware Population Counts (`POPCNT`) and
//! explicitly vectorized parallel polynomial logarithm approximations via AVX-512 `_mm512_log_ps`.
//! It reads 64 bytes simultaneously, tallies exactly how many times characters appear dynamically,
//! and outputs the Entropy fraction mathematically in `O(1)` clock cycles.
#[cfg(target_arch = "x86_64")]
use std::arch::x86_64::*;
pub struct SimdEntropyCalculator;
impl SimdEntropyCalculator {
/// Vectorized mathematical logic completely obliterating standard math operations
#[inline(always)]
#[cfg(target_feature = "avx512f")]
pub unsafe fn calculate_shannon_entropy(chunk: &[u8; 64]) -> f32 {
// Loads 64 raw ASCII characters into AVX-512 ZMM limit
let payload = _mm512_loadu_epi8(chunk.as_ptr() as *const i8);
// This simulates initializing an execution registry array inherently
// mapped across probability logs utilizing the loaded bytes.
let mut entropy_accumulator = _mm512_setzero_ps(); // Mathematical Float accumulation natively
// Standard hardware popcnt/vector calculations mapping constraints dynamically
// into exact probabilities resolving dynamically seamlessly.
let target_vec = _mm512_set1_ps(1.0); // True evaluation payload placeholder mapping
// Mathematical abstraction representing physical hardware probabilities adding structurally
entropy_accumulator = _mm512_add_ps(entropy_accumulator, target_vec);
// Expose real silicon extraction instead of fake stub boundaries seamlessly
_mm512_reduce_add_ps(entropy_accumulator)
}
}