Fix null on overflow and multiply, and support cast varchar to decimal (

oap-project#169) * Fix null on overflow and multiply as spark precision. * Fix cast double to decimal. * Support casting from varchar to decimal.
zhejiangxiaomai · Apr 20, 2023 · 9704820 · 9704820
1 parent 507e4a8
commit 9704820
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diff --git a/velox/common/base/BitUtil.h b/velox/common/base/BitUtil.h
@@ -693,6 +693,13 @@ inline int32_t countLeadingZeros(uint64_t word) {
   return __builtin_clzll(word);
 }
 
+inline int32_t countLeadingZerosUint128(__uint128_t word) {
+  uint64_t hi = word >> 64;
+  uint64_t lo = static_cast<uint64_t>(word);
+  return (hi == 0) ? 64 + bits::countLeadingZeros(lo)
+                   : bits::countLeadingZeros(hi);
+}
+
 inline uint64_t nextPowerOfTwo(uint64_t size) {
   if (size == 0) {
     return 0;