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 {
    
      // don't mangle hex constants and floats
      if (eq(number, "0") && swic(id, "x")
        || eqic(id, "f")) continue;
        
      replaceTokens_reTokLater(tok, reToks, i, i+3, camelCase(numberToEnglish(parseLong(number))) + firstToUpper(id));
    }
  }
  reTok_multi(tok, reToks);
}