zeroshade commented on code in PR #35165:
URL: https://github.com/apache/arrow/pull/35165#discussion_r1168779905
##########
go/arrow/decimal128/decimal128.go:
##########
@@ -332,10 +332,12 @@ func (n Num) BigInt() *big.Int {
return toBigIntPositive(n)
}
+// Greater returns true if the value represented by n is > other
func (n Num) Greater(other Num) bool {
- return other.Less(n)
+ return n.hi > other.hi || (n.hi == other.hi && n.lo > other.lo)
Review Comment:
why this change? Was this producing incorrect results?
`n > other` should be equivalent to `other < n`
##########
go/arrow/decimal256/decimal256.go:
##########
@@ -365,14 +365,25 @@ func (n Num) BigInt() *big.Int {
return toBigIntPositive(n)
}
+// Greater returns true if the value represented by n is > other
func (n Num) Greater(other Num) bool {
- return other.Less(n)
+ switch {
+ case n.arr[3] != other.arr[3]:
+ return int64(n.arr[3]) > int64(other.arr[3])
+ case n.arr[2] != other.arr[2]:
+ return n.arr[2] > other.arr[2]
+ case n.arr[1] != other.arr[1]:
+ return n.arr[1] > other.arr[1]
+ }
+ return n.arr[0] > other.arr[0]
}
Review Comment:
same questions as for decimal128, why this change? they should be equivalent
(and should get inlined by the compiler)
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