opsec-ee

/*
 * @file    ee_div_table.c
 * @version 2.4.0
 * @author (code) H. Overman (ee) <opsec.ee@pm.me>
 * @author  LeeMetaXTRON
 * @license MIT -- Copyright (c) 2025 H. Overman (ee)
 * @brief   Divisibility truth table: MOD zeros = clean choke points.
 *
 * Euman = ∫(optimization/time) △ performance
 *

opsec-ee

Notation as Engineering: What the Hardware Already Knows

H. Overman (ee) Independent Security & Systems Research — Euman Language Ecosystem Companion paper to PPO 6.5 (released 2026-04-27)

---

"The hardware was working perfectly. That was the problem."

opsec-ee

Reader Macros in Common Lisp

This post also appears on lisper.in.

Reader macros are perhaps not as famous as ordinary macros. While macros are a great way to create your own DSL, reader macros provide even greater flexibility by allowing you to create entirely new syntax on top of Lisp.

Paul Graham explains them very well in [On Lisp][] (Chapter 17, Read-Macros):

The three big moments in a Lisp expression's life are read-time, compile-time, and runtime. Functions are in control at runtime. Macros give us a chance to perform transformations on programs at compile-time. ...read-macros... do their work at read-time.

opsec-ee

/*
 * @file    polymorphic-2.c
 * @version 2.2.0
 * @author  H. Overman <opsec.ee@pm.me>
 * @brief   JSON Polymorphic Dispatch — Graph Coloring Edition
 *          SoA layout, BTB dealiasing, group-direct loops,
 *          graph coloring reorder, 4-state gate system.
 *
 * Copyright (c) 2025 H. Overman <opsec.ee@pm.me>
 * CC-BY-NC 4.0 non-commercial license

opsec-ee

/* Author: H. Overman 2026 */

/* n/a "toy" */

#include <stdbool.h>
#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include <time.h>

opsec-ee

do {
    value = feistel_encrypt(value);
} while (value >= N);
```

### 4. Proof: Cycle-Walking Preserves Bijection

**Theorem:** f: S → S is a bijection.

**Proof:**

opsec-ee

/*
 * ISAAC CSPRNG v4.0 — Full Architecture Rewrite
 * License: Public Domain (following original ISAAC license)
 *
 * Euman = integral(optimization/time) delta performance
 *
 * Based on Bob Jenkins' ISAAC (1993) — Public Domain algorithm.
 * This implementation: Proprietary optimizations, C23, Euman IFP.
 *
 * =======================================================================

opsec-ee

/*
 * lzw.c
 *  Euman = ∫(optimization/time) △ performance
 *
 * @file     lzw.c                                      @version  2.1.0
 * @author   H. Overman (ee)
 * @created  2026-03-20
 * @modified 2026-03-20
 * @by       H. Overman (ee)
 * @brief    LZW compression / decompression. C23

opsec-ee

// https://rosettacode.org/wiki/Huffman_coding - solved in C

#include <stdio.h>
#include <string.h>
#include <sys/time.h>

typedef struct timeval timepoint_t;
static inline timepoint_t get_time(void) {
  struct timeval t; gettimeofday(&t, NULL); return t;
}

opsec-ee

/*
 * @file    prime_ee.c
 * @version 3.5.6 (final)
 * @author  H. Overman (ee) <opsec.ee@pm.me>
 * @license MIT -- Copyright (c) 2025 H. Overman (ee)
 * @brief   Erdos-Selfridge Prime Categorization Engine.
 *          Sieve 1M primes, categorize by recursive depth of p+1
 *          factorization, store in RAMstore for O(1) lookup.
 *
 * 8 runs. (CLOCK_MONOTONIC, -O3 -march=native -flto)