Method try_push

external/include/fast_float/fast_float.h:1732–1739

append item to vector, returning if item was added

  }
  // append item to vector, returning if item was added
  bool try_push(limb value) noexcept {
    if (len() < capacity()) {
      push_unchecked(value);
      return true;
    } else {
      return false;
    }
  }
  // add items to the vector, from a span, without bounds checking
  void extend_unchecked(limb_span s) noexcept {
    limb* ptr = data + length;