viirya commented on code in PR #2923:
URL: https://github.com/apache/arrow-rs/pull/2923#discussion_r1007253273
##########
arrow/src/compute/kernels/cast.rs:
##########
@@ -336,10 +356,25 @@ where
// with_precision_and_scale validates the
// value is within range for the output precision
- cast_primitive_to_decimal(array, |v| v.as_() * mul, precision, scale)
+ cast_primitive_to_decimal128(array, |v| v.as_() * mul, precision, scale)
+}
+
+fn cast_integer_to_decimal256<T: ArrowNumericType>(
+ array: &PrimitiveArray<T>,
+ precision: u8,
+ scale: u8,
+) -> Result<ArrayRef>
+where
+ <T as ArrowPrimitiveType>::Native: AsPrimitive<i256>,
+{
+ let mul: i256 = i256::from_i128(10_i128.pow(scale as u32));
Review Comment:
Add pow to i256: #2955
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