Method zext

ext/src/llvm/APInt.cpp:935–951

Zero extend to a new width.

//  Zero extend to a new width.
APInt APInt::zext(unsigned width) const {
  assert(width > BitWidth && "Invalid APInt ZeroExtend request");

  if (width <= APINT_BITS_PER_WORD)
    return APInt(width, U.VAL);

  APInt Result(getMemory(getNumWords(width)), width);

  // Copy words.
  std::memcpy(Result.U.pVal, getRawData(), getNumWords() * APINT_WORD_SIZE);

  // Zero remaining words.
  std::memset(Result.U.pVal + getNumWords(), 0,
              (Result.getNumWords() - getNumWords()) * APINT_WORD_SIZE);

  return Result;
}

APInt APInt::zextOrTrunc(unsigned width) const {
  if (BitWidth < width)