@sschepis/resolang/assembly/core/math-cache.ts

ResoLang - Core quantum resonance computation library

/**
 * Prime Cache Module
 * Provides efficient caching for prime number calculations
 */

/**
 * Small primes for trial division (up to 1000)
 */
export const SMALL_PRIMES: u32[] = [
  2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71,
  73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151,
  157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233,
  239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317,
  331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419,
  421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503,
  509, 521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607,
  613, 617, 619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701,
  709, 719, 727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811,
  821, 823, 827, 829, 839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911,
  919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, 997
];

/**
 * Prime cache for frequently accessed primes
 */
export class PrimeCache {
  private cache: Map<u64, bool> = new Map();
  private primeList: u64[] = [];
  private maxCached: u64 = 0;
  
  constructor() {
    // Pre-populate with small primes
    for (let i = 0; i < SMALL_PRIMES.length; i++) {
      const p = u64(SMALL_PRIMES[i]);
      this.cache.set(p, true);
      this.primeList.push(p);
    }
    this.maxCached = u64(SMALL_PRIMES[SMALL_PRIMES.length - 1]);
  }
  
  has(n: u64): bool {
    return this.cache.has(n);
  }
  
  get(n: u64): bool {
    return this.cache.get(n) || false;
  }
  
  set(n: u64, isPrime: bool): void {
    this.cache.set(n, isPrime);
    if (isPrime && n > this.maxCached) {
      this.primeList.push(n);
      this.maxCached = n;
    }
  }
  
  getPrimes(): u64[] {
    return this.primeList;
  }
  
  clear(): void {
    this.cache.clear();
    this.primeList = [];
    this.maxCached = 0;
  }
}

// Global prime cache instance
export const primeCache = new PrimeCache();