Luminarys commented on a change in pull request #8279:
URL: https://github.com/apache/arrow/pull/8279#discussion_r496119596
##########
File path: cpp/src/arrow/util/basic_decimal.cc
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@@ -251,9 +252,9 @@ BasicDecimal128& BasicDecimal128::operator>>=(uint32_t
bits) {
namespace {
void ExtendAndMultiplyUint64(uint64_t x, uint64_t y, uint64_t* hi, uint64_t*
lo) {
-#ifdef __SIZEOF_INT128__
+#ifdef ARROW_USE_NATIVE_INT128
const __uint128_t r = static_cast<__uint128_t>(x) * y;
- *lo = r & 0xffffffffffffffff;
+ *lo = r & kIntMask;
Review comment:
Oh I see, will fix.
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