From 54dd983a0dd3c7973611a98e6d022b51a6aff6b4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bastian=20M=C3=BCller?= <bastian@turbolent.com>
Date: Wed, 27 Aug 2025 10:36:03 -0700
Subject: [PATCH] use big.Int.Quo() instead of Div() to ensure Go-like rounding
 behaviour

---
 interpreter/value_fix64.go  | 4 ++--
 interpreter/value_int128.go | 4 ++--
 interpreter/value_int256.go | 4 ++--
 values/value_int.go         | 2 +-
 4 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/interpreter/value_fix64.go b/interpreter/value_fix64.go
index 8d5702c6ad..feda8a54d8 100644
--- a/interpreter/value_fix64.go
+++ b/interpreter/value_fix64.go
@@ -328,7 +328,7 @@ func (v Fix64Value) Div(context NumberValueArithmeticContext, other NumberValue,
 
 	valueGetter := func() int64 {
 		result := new(big.Int).Mul(a, sema.Fix64FactorBig)
-		result.Div(result, b)
+		result.Quo(result, b)
 
 		if result.Cmp(minInt64Big) < 0 {
 			panic(&UnderflowError{
@@ -362,7 +362,7 @@ func (v Fix64Value) SaturatingDiv(context NumberValueArithmeticContext, other Nu
 
 	valueGetter := func() int64 {
 		result := new(big.Int).Mul(a, sema.Fix64FactorBig)
-		result.Div(result, b)
+		result.Quo(result, b)
 
 		if result.Cmp(minInt64Big) < 0 {
 			return math.MinInt64
diff --git a/interpreter/value_int128.go b/interpreter/value_int128.go
index 3bede23132..8b2300c13c 100644
--- a/interpreter/value_int128.go
+++ b/interpreter/value_int128.go
@@ -459,7 +459,7 @@ func (v Int128Value) Div(context NumberValueArithmeticContext, other NumberValue
 				LocationRange: locationRange,
 			})
 		}
-		res.Div(v.BigInt, o.BigInt)
+		res.Quo(v.BigInt, o.BigInt)
 
 		return res
 	}
@@ -495,7 +495,7 @@ func (v Int128Value) SaturatingDiv(context NumberValueArithmeticContext, other N
 		if (v.BigInt.Cmp(sema.Int128TypeMinIntBig) == 0) && (o.BigInt.Cmp(res) == 0) {
 			return sema.Int128TypeMaxIntBig
 		}
-		res.Div(v.BigInt, o.BigInt)
+		res.Quo(v.BigInt, o.BigInt)
 
 		return res
 	}
diff --git a/interpreter/value_int256.go b/interpreter/value_int256.go
index 7797de68b5..695a1f44cf 100644
--- a/interpreter/value_int256.go
+++ b/interpreter/value_int256.go
@@ -428,7 +428,7 @@ func (v Int256Value) Div(context NumberValueArithmeticContext, other NumberValue
 				LocationRange: locationRange,
 			})
 		}
-		res.Div(v.BigInt, o.BigInt)
+		res.Quo(v.BigInt, o.BigInt)
 		return res
 	}
 
@@ -463,7 +463,7 @@ func (v Int256Value) SaturatingDiv(context NumberValueArithmeticContext, other N
 		if (v.BigInt.Cmp(sema.Int256TypeMinIntBig) == 0) && (o.BigInt.Cmp(res) == 0) {
 			return sema.Int256TypeMaxIntBig
 		}
-		res.Div(v.BigInt, o.BigInt)
+		res.Quo(v.BigInt, o.BigInt)
 		return res
 	}
 
diff --git a/values/value_int.go b/values/value_int.go
index 8adeb193ca..e5979f3355 100644
--- a/values/value_int.go
+++ b/values/value_int.go
@@ -162,7 +162,7 @@ func (v IntValue) Div(gauge common.MemoryGauge, other IntValue) (IntValue, error
 		common.NewDivBigIntMemoryUsage(v.BigInt, other.BigInt),
 		func() *big.Int {
 			res := new(big.Int)
-			return res.Div(v.BigInt, other.BigInt)
+			return res.Quo(v.BigInt, other.BigInt)
 		},
 	), nil
 }