From 5cd06117f0610ed6cc0b746c3b467da263fc9aaf Mon Sep 17 00:00:00 2001
From: Stefan <stefan@gorules.io>
Date: Tue, 3 Jun 2025 09:47:38 +0200
Subject: [PATCH] fix: update rounding strategy

---
 core/expression/src/functions/internal.rs | 7 +++++--
 core/expression/tests/data/standard.csv   | 4 ++++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/core/expression/src/functions/internal.rs b/core/expression/src/functions/internal.rs
index 387ae126..0e467ad2 100644
--- a/core/expression/src/functions/internal.rs
+++ b/core/expression/src/functions/internal.rs
@@ -313,7 +313,7 @@ pub(crate) mod imp {
     #[cfg(feature = "regex-lite")]
     use regex_lite::Regex;
     use rust_decimal::prelude::{FromPrimitive, ToPrimitive};
-    use rust_decimal::Decimal;
+    use rust_decimal::{Decimal, RoundingStrategy};
     use rust_decimal_macros::dec;
     use std::collections::BTreeMap;
     use std::rc::Rc;
@@ -473,7 +473,10 @@ pub(crate) mod imp {
             .transpose()?
             .unwrap_or(0);
 
-        Ok(V::Number(a.round_dp(dp)))
+        Ok(V::Number(a.round_dp_with_strategy(
+            dp,
+            RoundingStrategy::MidpointAwayFromZero,
+        )))
     }
 
     pub fn trunc(args: Arguments) -> anyhow::Result<V> {
diff --git a/core/expression/tests/data/standard.csv b/core/expression/tests/data/standard.csv
index 6f03b62c..99ff24d9 100644
--- a/core/expression/tests/data/standard.csv
+++ b/core/expression/tests/data/standard.csv
@@ -441,6 +441,10 @@ round(7.6);; 8
 round(-7.4);; -7
 round(-7.5);; -8
 round(-7.6);; -8
+round(0.5);;1
+round(-0.5);;-1
+round(1.5);;2
+round(-1.5);;-2
 
 round(7.444, 0);; 7
 round(7.444, 1);; 7.4