pitrou commented on code in PR #35997:
URL: https://github.com/apache/arrow/pull/35997#discussion_r1229413297
##########
cpp/src/arrow/util/basic_decimal.cc:
##########
@@ -1188,14 +857,14 @@ BasicDecimal256& BasicDecimal256::operator<<=(uint32_t
bits) {
if (bits == 0) {
return *this;
}
- int cross_word_shift = bits / 64;
- if (static_cast<size_t>(cross_word_shift) >= array_.size()) {
+ const int cross_word_shift = bits / 64;
+ if (cross_word_shift >= kWordWidth) {
Review Comment:
You're right that it's confusing. I'll rename it to `kNumWords`.
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