viirya commented on code in PR #3040:
URL: https://github.com/apache/arrow-rs/pull/3040#discussion_r1016027312
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arrow-cast/src/cast.rs:
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@@ -411,34 +412,51 @@ fn cast_reinterpret_arrays<
))
}
-// cast the decimal array to integer array
-macro_rules! cast_decimal_to_integer {
- ($ARRAY:expr, $SCALE : ident, $VALUE_BUILDER: ident, $NATIVE_TYPE : ident,
$DATA_TYPE : expr) => {{
- let array = $ARRAY.as_any().downcast_ref::<Decimal128Array>().unwrap();
- let mut value_builder = $VALUE_BUILDER::with_capacity(array.len());
- let div: i128 = 10_i128.pow(*$SCALE as u32);
- let min_bound = ($NATIVE_TYPE::MIN) as i128;
- let max_bound = ($NATIVE_TYPE::MAX) as i128;
- for i in 0..array.len() {
- if array.is_null(i) {
- value_builder.append_null();
+fn cast_decimal_to_integer<D, T>(
Review Comment:
castoptions is not supported originally for casting from decimal128 to
signed integer. We should support it actually. Can be in this PR or a later PR.
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