svoid tok_numberFunctionNames(LS tok) {
  int n = l(tok);
  new L<IntRange> reToks;
  for (int i = 1; i < n-2; i += 2) {
    S number, id;
    if (isInteger(number = tok.get(i)) && empty(tok.get(i+1)) && isIdentifier(id = tok.get(i+2))) pcall {
    
      if (eq(number, "0") && swic(id, "x") // skip hex constants
        || eqic(id, "f") // skip float constants
        || eqic(id, "e") && empty(get(tok, i+3)) && (isInteger(get(tok, i+4)) || eqGet(tok, i+4, "-")) // skip exponential floating-point constants (e.g. 1e6)
        ) continue;
        
      replaceTokens_reTokLater(tok, reToks, i, i+3, camelCase(numberToEnglish(parseLong(number))) + firstToUpper(id));
    }
  }
  reTok_multi(tok, reToks);
}