viirya commented on code in PR #2383:
URL: https://github.com/apache/arrow-rs/pull/2383#discussion_r940960239
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arrow/src/util/decimal.rs:
##########
@@ -18,21 +18,51 @@
//! Decimal related utils
use crate::datatypes::{
- DECIMAL128_MAX_PRECISION, DECIMAL128_MAX_SCALE, DECIMAL256_MAX_PRECISION,
- DECIMAL256_MAX_SCALE,
+ DataType, DECIMAL128_MAX_PRECISION, DECIMAL128_MAX_SCALE,
DECIMAL256_MAX_PRECISION,
+ DECIMAL256_MAX_SCALE, DECIMAL_DEFAULT_SCALE,
};
use crate::error::{ArrowError, Result};
use num::bigint::BigInt;
use num::Signed;
use std::cmp::{min, Ordering};
-pub trait BasicDecimal: PartialOrd + Ord + PartialEq + Eq {
- /// The bit-width of the internal representation.
- const BIT_WIDTH: usize;
- /// The maximum precision.
- const MAX_PRECISION: usize;
- /// The maximum scale.
- const MAX_SCALE: usize;
+#[derive(Debug)]
+pub struct BasicDecimal<const BYTE_WIDTH: usize> {
+ precision: usize,
+ scale: usize,
+ value: [u8; BYTE_WIDTH],
+}
+
+impl<const BYTE_WIDTH: usize> BasicDecimal<BYTE_WIDTH> {
+ #[allow(clippy::type_complexity)]
+ const _MAX_PRECISION_SCALE_CONSTRUCTOR_DEFAULT_TYPE: (
Review Comment:
As this is not pub, I think `MAX_PRECISION_SCALE_CONSTRUCTOR_DEFAULT_TYPE`
might be okay. A `_` prefix seems redundant.
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